Converting C sources to use `const` where appropriate using regular expressions. Fix typos

DSP_Lib_TestSuite/RefLibs/src/BasicMathFunctions/abs.c

@@ -1,7 +1,7 @@
 #include "ref.h"
 
 void ref_abs_f32(
-  float32_t * pSrc,
+  const float32_t * pSrc,
   float32_t * pDst,
   uint32_t blockSize)
 {

DSP_Lib_TestSuite/RefLibs/src/BasicMathFunctions/add.c

@@ -1,8 +1,8 @@
 #include "ref.h"
 
 void ref_add_f32(
-  float32_t * pSrcA,
+  const float32_t * pSrcA,
-  float32_t * pSrcB,
+  const float32_t * pSrcB,
   float32_t * pDst,
   uint32_t blockSize)
 {

DSP_Lib_TestSuite/RefLibs/src/BasicMathFunctions/dot_prod.c

@@ -1,8 +1,8 @@
 #include "ref.h"
 
 void ref_dot_prod_f32(
-  float32_t * pSrcA,
+  const float32_t * pSrcA,
-  float32_t * pSrcB,
+  const float32_t * pSrcB,
   uint32_t blockSize,
   float32_t * result)
 {

DSP_Lib_TestSuite/RefLibs/src/BasicMathFunctions/mult.c

@@ -1,8 +1,8 @@
 #include "ref.h"
 
 void ref_mult_f32(
-  float32_t * pSrcA,
+  const float32_t * pSrcA,
-  float32_t * pSrcB,
+  const float32_t * pSrcB,
   float32_t * pDst,
   uint32_t blockSize)
 {

DSP_Lib_TestSuite/RefLibs/src/BasicMathFunctions/negate.c

@@ -1,7 +1,7 @@
 #include "ref.h"
 
 void ref_negate_f32(
-  float32_t * pSrc,
+  const float32_t * pSrc,
   float32_t * pDst,
   uint32_t blockSize)
 {

DSP_Lib_TestSuite/RefLibs/src/BasicMathFunctions/offset.c

@@ -1,7 +1,7 @@
 #include "ref.h"
 
 void ref_offset_f32(
-  float32_t * pSrc,
+  const float32_t * pSrc,
   float32_t offset,
   float32_t * pDst,
   uint32_t blockSize)

DSP_Lib_TestSuite/RefLibs/src/BasicMathFunctions/scale.c

@@ -1,7 +1,7 @@
 #include "ref.h"
 
 void ref_scale_f32(
-  float32_t * pSrc,
+  const float32_t * pSrc,
   float32_t scale,
   float32_t * pDst,
   uint32_t blockSize)

DSP_Lib_TestSuite/RefLibs/src/BasicMathFunctions/sub.c

@@ -1,8 +1,8 @@
 #include "ref.h"
 
 void ref_sub_f32(
-  float32_t * pSrcA,
+  const float32_t * pSrcA,
-  float32_t * pSrcB,
+  const float32_t * pSrcB,
   float32_t * pDst,
   uint32_t blockSize)
 {

DSP_Lib_TestSuite/RefLibs/src/ComplexMathFunctions/cmplx_conj.c

@@ -1,7 +1,7 @@
 #include "ref.h"
 
 void ref_cmplx_conj_f32(
-  float32_t * pSrc,
+  const float32_t * pSrc,
   float32_t * pDst,
   uint32_t numSamples)
 {

DSP_Lib_TestSuite/RefLibs/src/ComplexMathFunctions/cmplx_dot_prod.c

@@ -1,8 +1,8 @@
 #include "ref.h"
 
 void ref_cmplx_dot_prod_f32(
-  float32_t * pSrcA,
+  const float32_t * pSrcA,
-  float32_t * pSrcB,
+  const float32_t * pSrcB,
   uint32_t numSamples,
   float32_t * realResult,
   float32_t * imagResult)

DSP_Lib_TestSuite/RefLibs/src/ComplexMathFunctions/cmplx_mag.c

@@ -1,7 +1,7 @@
 #include "ref.h"
 
 void ref_cmplx_mag_f32(
-  float32_t * pSrc,
+  const float32_t * pSrc,
   float32_t * pDst,
   uint32_t numSamples)
 {

DSP_Lib_TestSuite/RefLibs/src/ComplexMathFunctions/cmplx_mag_squared.c

@@ -1,7 +1,7 @@
 #include "ref.h"
 
 void ref_cmplx_mag_squared_f32(
-  float32_t * pSrc,
+  const float32_t * pSrc,
   float32_t * pDst,
   uint32_t numSamples)
 {

DSP_Lib_TestSuite/RefLibs/src/ComplexMathFunctions/cmplx_mult_cmplx.c

@@ -1,8 +1,8 @@
 #include "ref.h"
 
 void ref_cmplx_mult_cmplx_f32(
-  float32_t * pSrcA,
+  const float32_t * pSrcA,
-  float32_t * pSrcB,
+  const float32_t * pSrcB,
   float32_t * pDst,
   uint32_t numSamples)
 {

DSP_Lib_TestSuite/RefLibs/src/ComplexMathFunctions/cmplx_mult_real.c

@@ -1,8 +1,8 @@
 #include "ref.h"
 
 void ref_cmplx_mult_real_f32(
-  float32_t * pSrcCmplx,
+  const float32_t * pSrcCmplx,
-  float32_t * pSrcReal,
+  const float32_t * pSrcReal,
   float32_t * pCmplxDst,
   uint32_t numSamples)
 {

DSP_Lib_TestSuite/RefLibs/src/FilteringFunctions/biquad.c

@@ -2,7 +2,7 @@
 
 void ref_biquad_cascade_df2T_f32(
 	const arm_biquad_cascade_df2T_instance_f32 * S,
-	float32_t * pSrc,
+	const float32_t * pSrc,
 	float32_t * pDst,
 	uint32_t blockSize)
 {
@@ -72,7 +72,7 @@ void ref_biquad_cascade_df2T_f32(
 
 void ref_biquad_cascade_stereo_df2T_f32(
 	const arm_biquad_cascade_stereo_df2T_instance_f32 * S,
-	float32_t * pSrc,
+	const float32_t * pSrc,
 	float32_t * pDst,
 	uint32_t blockSize)
 {
@@ -220,7 +220,7 @@ void ref_biquad_cascade_df2T_f64(
 
 void ref_biquad_cascade_df1_f32(
   const arm_biquad_casd_df1_inst_f32 * S,
-  float32_t * pSrc,
+  const float32_t * pSrc,
   float32_t * pDst,
   uint32_t blockSize)
 {
@@ -309,7 +309,7 @@ void ref_biquad_cas_df1_32x64_q31(
   q31_t *pIn = pSrc;                             /*  input pointer initialization  			*/
   q31_t *pOut = pDst;                            /*  output pointer initialization 			*/
   q63_t *pState = S->pState;                     /*  state pointer initialization  			*/
-  q31_t *pCoeffs = S->pCoeffs;                   /*  coeff pointer initialization  			*/
+  const q31_t *pCoeffs = S->pCoeffs;                   /*  coeff pointer initialization  			*/
   q63_t acc;                                     /*  accumulator                   			*/
   q31_t Xn1, Xn2;                                /*  Input Filter state variables  			*/
   q63_t Yn1, Yn2;                                /*  Output Filter state variables 			*/
@@ -401,7 +401,7 @@ void ref_biquad_cascade_df1_q31(
   q31_t *pIn = pSrc;                             /*  input pointer initialization  */
   q31_t *pOut = pDst;                            /*  output pointer initialization */
   q31_t *pState = S->pState;                     /*  pState pointer initialization */
-  q31_t *pCoeffs = S->pCoeffs;                   /*  coeff pointer initialization  */
+  const q31_t *pCoeffs = S->pCoeffs;                   /*  coeff pointer initialization  */
   q31_t Xn1, Xn2, Yn1, Yn2;                      /*  Filter state variables        */
   q31_t b0, b1, b2, a1, a2;                      /*  Filter coefficients           */
   q31_t Xn;                                      /*  temporary input               */
@@ -496,7 +496,7 @@ void ref_biquad_cascade_df1_fast_q31(
   q31_t *pIn = pSrc;                             /*  input pointer initialization  */
   q31_t *pOut = pDst;                            /*  output pointer initialization */
   q31_t *pState = S->pState;                     /*  pState pointer initialization */
-  q31_t *pCoeffs = S->pCoeffs;                   /*  coeff pointer initialization  */
+  const q31_t *pCoeffs = S->pCoeffs;                   /*  coeff pointer initialization  */
   q31_t Xn;                                      /*  temporary input               */
   int32_t shift = (int32_t) S->postShift + 1;    /*  Shift to be applied to the output */
   uint32_t sample, stage = S->numStages;         /*  loop counters                     */
@@ -576,7 +576,7 @@ void ref_biquad_cascade_df1_fast_q15(
 	q31_t acc;                                     			/*  Accumulator                              */
 	int32_t shift = (15 - (int32_t) S->postShift); 			/*  Post shift                               */
 	q15_t *pState = S->pState;                     			/*  State pointer                            */
-	q15_t *pCoeffs = S->pCoeffs;                   			/*  Coefficient pointer                      */
+	const q15_t *pCoeffs = S->pCoeffs;                   			/*  Coefficient pointer                      */
   uint32_t sample, stage = (uint32_t) S->numStages;   /*  Stage loop counter                          */
 
   do
@@ -651,7 +651,7 @@ void ref_biquad_cascade_df1_q15(
 	q63_t acc;                                     			/*  Accumulator                              */
 	int32_t shift = (15 - (int32_t) S->postShift); 			/*  Post shift                               */
 	q15_t *pState = S->pState;                     			/*  State pointer                            */
-	q15_t *pCoeffs = S->pCoeffs;                   			/*  Coefficient pointer                      */
+	const q15_t *pCoeffs = S->pCoeffs;                   			/*  Coefficient pointer                      */
   uint32_t sample, stage = (uint32_t) S->numStages;   /*  Stage loop counter                          */
 
   do

DSP_Lib_TestSuite/RefLibs/src/FilteringFunctions/conv.c

@@ -1,9 +1,9 @@
 #include "ref.h"
 
 void ref_conv_f32(
-  float32_t * pSrcA,
+  const float32_t * pSrcA,
   uint32_t 		srcALen,
-  float32_t * pSrcB,
+  const float32_t * pSrcB,
   uint32_t 		srcBLen,
   float32_t * pDst)
 {
@@ -32,9 +32,9 @@ void ref_conv_f32(
 }
 
 arm_status ref_conv_partial_f32(
-  float32_t * pSrcA,
+  const float32_t * pSrcA,
   uint32_t srcALen,
-  float32_t * pSrcB,
+  const float32_t * pSrcB,
   uint32_t srcBLen,
   float32_t * pDst,
   uint32_t firstIndex,

DSP_Lib_TestSuite/RefLibs/src/FilteringFunctions/correlate.c

@@ -1,9 +1,9 @@
 #include "ref.h"
 
 void ref_correlate_f32(
-  float32_t * pSrcA,
+  const float32_t * pSrcA,
   uint32_t srcALen,
-  float32_t * pSrcB,
+  const float32_t * pSrcB,
   uint32_t srcBLen,
   float32_t * pDst)
 {
@@ -91,8 +91,8 @@ void ref_correlate_q31(
   uint32_t srcBLen,
   q31_t * pDst)
 {
-  q31_t *pIn1 = pSrcA;                           /* inputA pointer               */
+  const q31_t *pIn1 = pSrcA;                     /* inputA pointer               */
-  q31_t *pIn2 = pSrcB + (srcBLen - 1U);          /* inputB pointer               */
+  const q31_t *pIn2 = pSrcB + (srcBLen - 1U);    /* inputB pointer               */
   q63_t sum;                                     /* Accumulators                 */
   uint32_t i = 0U, j;                            /* loop counters */
   uint32_t inv = 0U;                             /* Reverse order flag */
@@ -162,8 +162,8 @@ void ref_correlate_fast_q31(
   uint32_t srcBLen,
   q31_t * pDst)
 {
-  q31_t *pIn1 = pSrcA;                           /* inputA pointer               */
+  const q31_t *pIn1 = pSrcA;                           /* inputA pointer               */
-  q31_t *pIn2 = pSrcB + (srcBLen - 1U);          /* inputB pointer               */
+  const q31_t *pIn2 = pSrcB + (srcBLen - 1U);          /* inputB pointer               */
   q63_t sum;                                     /* Accumulators                  */
   uint32_t i = 0U, j;                            /* loop counters */
   uint32_t inv = 0U;                             /* Reverse order flag */
@@ -234,8 +234,8 @@ void ref_correlate_q15(
   uint32_t srcBLen,
   q15_t * pDst)
 {
-  q15_t *pIn1 = pSrcA;                           /* inputA pointer               */
+  const q15_t *pIn1 = pSrcA;                           /* inputA pointer               */
-  q15_t *pIn2 = pSrcB + (srcBLen - 1U);          /* inputB pointer               */
+  const q15_t *pIn2 = pSrcB + (srcBLen - 1U);          /* inputB pointer               */
   q63_t sum;                                     /* Accumulators                  */
   uint32_t i = 0U, j;                            /* loop counters */
   uint32_t inv = 0U;                             /* Reverse order flag */
@@ -305,8 +305,8 @@ void ref_correlate_fast_q15(
   uint32_t srcBLen,
   q15_t * pDst)
 {
-  q15_t *pIn1 = pSrcA;                           /* inputA pointer               */
+  const q15_t *pIn1 = pSrcA;                           /* inputA pointer               */
-  q15_t *pIn2 = pSrcB + (srcBLen - 1U);          /* inputB pointer               */
+  const q15_t *pIn2 = pSrcB + (srcBLen - 1U);          /* inputB pointer               */
   q63_t sum;                                     /* Accumulators                  */
   uint32_t i = 0U, j;                            /* loop counters */
   uint32_t inv = 0U;                             /* Reverse order flag */
@@ -377,8 +377,8 @@ void ref_correlate_fast_opt_q15(
   q15_t * pDst,
   q15_t * pScratch)
 {
-  q15_t *pIn1 = pSrcA;                           /* inputA pointer               */
+  const q15_t *pIn1 = pSrcA;                           /* inputA pointer               */
-  q15_t *pIn2 = pSrcB + (srcBLen - 1U);          /* inputB pointer               */
+  const q15_t *pIn2 = pSrcB + (srcBLen - 1U);          /* inputB pointer               */
   q31_t sum;                                     /* Accumulators                  */
   uint32_t i = 0U, j;                            /* loop counters */
   uint32_t inv = 0U;                             /* Reverse order flag */
@@ -448,8 +448,8 @@ void ref_correlate_q7(
   uint32_t srcBLen,
   q7_t * pDst)
 {
-  q7_t *pIn1 = pSrcA;                            /* inputA pointer */
+  const q7_t *pIn1 = pSrcA;                            /* inputA pointer */
-  q7_t *pIn2 = pSrcB + (srcBLen - 1U);           /* inputB pointer */
+  const q7_t *pIn2 = pSrcB + (srcBLen - 1U);           /* inputB pointer */
   q31_t sum;                                     /* Accumulator */
   uint32_t i = 0U, j;                            /* loop counters */
   uint32_t inv = 0U;                             /* Reverse order flag */

DSP_Lib_TestSuite/RefLibs/src/FilteringFunctions/fir.c

@@ -2,7 +2,7 @@
 
 void ref_fir_f32(
 	const arm_fir_instance_f32 * S,
-	float32_t * pSrc,
+	const float32_t * pSrc,
 	float32_t * pDst,
 	uint32_t blockSize)
 {
@@ -61,7 +61,7 @@ void ref_fir_q31(
   uint32_t blockSize)
 {
    q31_t *pState = S->pState;                 /* State pointer */
-   q31_t *pCoeffs = S->pCoeffs;               /* Coefficient pointer */
+   const q31_t *pCoeffs = S->pCoeffs;               /* Coefficient pointer */
    q31_t *pStateCurnt;                        /* Points to the current sample of the state */
    uint32_t numTaps = S->numTaps;             /* Number of filter coefficients in the filter */
    uint32_t i;                    						/* Loop counters */
@@ -115,7 +115,7 @@ void ref_fir_fast_q31(
   uint32_t blockSize)
 {
    q31_t *pState = S->pState;                 /* State pointer */
-   q31_t *pCoeffs = S->pCoeffs;               /* Coefficient pointer */
+   const q31_t *pCoeffs = S->pCoeffs;               /* Coefficient pointer */
    q31_t *pStateCurnt;                        /* Points to the current sample of the state */
    uint32_t numTaps = S->numTaps;             /* Number of filter coefficients in the filter */
    uint32_t i;                    						/* Loop counters */
@@ -169,7 +169,7 @@ void ref_fir_q15(
   uint32_t blockSize)
 {
    q15_t *pState = S->pState;                 /* State pointer */
-   q15_t *pCoeffs = S->pCoeffs;               /* Coefficient pointer */
+   const q15_t *pCoeffs = S->pCoeffs;               /* Coefficient pointer */
    q15_t *pStateCurnt;                        /* Points to the current sample of the state */
    uint32_t numTaps = S->numTaps;             /* Number of filter coefficients in the filter */
    uint32_t i;                    						/* Loop counters */
@@ -223,7 +223,7 @@ void ref_fir_fast_q15(
   uint32_t blockSize)
 {
    q15_t *pState = S->pState;                 /* State pointer */
-   q15_t *pCoeffs = S->pCoeffs;               /* Coefficient pointer */
+   const q15_t *pCoeffs = S->pCoeffs;               /* Coefficient pointer */
    q15_t *pStateCurnt;                        /* Points to the current sample of the state */
    uint32_t numTaps = S->numTaps;             /* Number of filter coefficients in the filter */
    uint32_t i;                    						/* Loop counters */
@@ -277,7 +277,7 @@ void ref_fir_q7(
   uint32_t blockSize)
 {
    q7_t *pState = S->pState;                 /* State pointer */
-   q7_t *pCoeffs = S->pCoeffs;               /* Coefficient pointer */
+   const q7_t *pCoeffs = S->pCoeffs;               /* Coefficient pointer */
    q7_t *pStateCurnt;                        /* Points to the current sample of the state */
    uint32_t numTaps = S->numTaps;            /* Number of filter coefficients in the filter */
    uint32_t i;                    					 /* Loop counters */

DSP_Lib_TestSuite/RefLibs/src/FilteringFunctions/fir_decimate.c

@@ -2,7 +2,7 @@
 
 void ref_fir_decimate_f32(
   const arm_fir_decimate_instance_f32 * S,
-  float32_t * pSrc,
+  const float32_t * pSrc,
   float32_t * pDst,
   uint32_t blockSize)
 {
@@ -83,7 +83,7 @@ void ref_fir_decimate_q31(
   uint32_t blockSize)
 {
   q31_t *pState = S->pState;                     /* State pointer */
-  q31_t *pCoeffs = S->pCoeffs;                   /* Coefficient pointer */
+  const q31_t *pCoeffs = S->pCoeffs;                   /* Coefficient pointer */
   q31_t *pStateCurnt;                            /* Points to the current sample of the state */
   q31_t x0, c0;                                  /* Temporary variables to hold state and coefficient values */
   q63_t sum0;                                    /* Accumulator */
@@ -160,7 +160,7 @@ void ref_fir_decimate_fast_q31(
   uint32_t blockSize)
 {
   q31_t *pState = S->pState;                     /* State pointer */
-  q31_t *pCoeffs = S->pCoeffs;                   /* Coefficient pointer */
+  const q31_t *pCoeffs = S->pCoeffs;                   /* Coefficient pointer */
   q31_t *pStateCurnt;                            /* Points to the current sample of the state */
   q31_t x0, c0;                                  /* Temporary variables to hold state and coefficient values */
   q31_t sum0;                                    /* Accumulator */
@@ -237,7 +237,7 @@ void ref_fir_decimate_q15(
   uint32_t blockSize)
 {
   q15_t *pState = S->pState;                     /* State pointer */
-  q15_t *pCoeffs = S->pCoeffs;                   /* Coefficient pointer */
+  const q15_t *pCoeffs = S->pCoeffs;                   /* Coefficient pointer */
   q15_t *pStateCurnt;                            /* Points to the current sample of the state */
   q31_t x0, c0;                                  /* Temporary variables to hold state and coefficient values */
   q63_t sum0;                                    /* Accumulator */
@@ -314,7 +314,7 @@ void ref_fir_decimate_fast_q15(
   uint32_t blockSize)
 {
   q15_t *pState = S->pState;                     /* State pointer */
-  q15_t *pCoeffs = S->pCoeffs;                   /* Coefficient pointer */
+  const q15_t *pCoeffs = S->pCoeffs;                   /* Coefficient pointer */
   q15_t *pStateCurnt;                            /* Points to the current sample of the state */
   q15_t x0, c0;                                  /* Temporary variables to hold state and coefficient values */
   q31_t sum0;                                    /* Accumulator */

DSP_Lib_TestSuite/RefLibs/src/FilteringFunctions/fir_interpolate.c

@@ -2,7 +2,7 @@
 
 void ref_fir_interpolate_f32(
   const arm_fir_interpolate_instance_f32 * S,
-  float32_t * pSrc,
+  const float32_t * pSrc,
   float32_t * pDst,
   uint32_t blockSize)
 {
@@ -98,7 +98,7 @@ void ref_fir_interpolate_q31(
   uint32_t blockSize)
 {
   q31_t *pState = S->pState;                     /* State pointer */
-  q31_t *pCoeffs = S->pCoeffs;                   /* Coefficient pointer */
+  const q31_t *pCoeffs = S->pCoeffs;                   /* Coefficient pointer */
   q31_t *pStateCurnt;                            /* Points to the current sample of the state */
   q31_t *ptr1, *ptr2;                            /* Temporary pointers for state and coefficient buffers */
 
@@ -199,7 +199,7 @@ void ref_fir_interpolate_q15(
   uint32_t blockSize)
 {
   q15_t *pState = S->pState;                     /* State pointer                                            */
-  q15_t *pCoeffs = S->pCoeffs;                   /* Coefficient pointer                                      */
+  const q15_t *pCoeffs = S->pCoeffs;                   /* Coefficient pointer                                      */
   q15_t *pStateCurnt;                            /* Points to the current sample of the state                */
   q15_t *ptr1, *ptr2;                            /* Temporary pointers for state and coefficient buffers     */
   q63_t sum;                                     /* Accumulator */

DSP_Lib_TestSuite/RefLibs/src/FilteringFunctions/fir_lattice.c

@@ -2,7 +2,7 @@
 
 void ref_fir_lattice_f32(
   const arm_fir_lattice_instance_f32 * S,
-  float32_t * pSrc,
+  const float32_t * pSrc,
   float32_t * pDst,
   uint32_t blockSize)
 {
@@ -83,8 +83,8 @@ void ref_fir_lattice_q31(
   uint32_t blockSize)
 {
   q31_t *pState;                                 /* State pointer */
-  q31_t *pCoeffs = S->pCoeffs;                   /* Coefficient pointer */
+  const q31_t *pCoeffs = S->pCoeffs;                   /* Coefficient pointer */
-  q31_t *px;                                     /* temporary state pointer */
+  const q31_t *px;                                     /* temporary state pointer */
   q31_t *pk;                                     /* temporary coefficient pointer */
   q31_t fcurr, fnext, gcurr, gnext;              /* temporary variables */
   uint32_t numStages = S->numStages;             /* Length of the filter */
@@ -160,8 +160,8 @@ void ref_fir_lattice_q15(
   uint32_t blockSize)
 {
   q15_t *pState;                                 /* State pointer */
-  q15_t *pCoeffs = S->pCoeffs;                   /* Coefficient pointer */
+  const q15_t *pCoeffs = S->pCoeffs;                   /* Coefficient pointer */
-  q15_t *px;                                     /* temporary state pointer */
+  const q15_t *px;                                     /* temporary state pointer */
   q15_t *pk;                                     /* temporary coefficient pointer */
   q31_t fcurnt, fnext, gcurnt, gnext;            /* temporary variables */
   uint32_t numStages = S->numStages;             /* Length of the filter */

DSP_Lib_TestSuite/RefLibs/src/FilteringFunctions/fir_sparse.c

@@ -2,7 +2,7 @@
 
 void ref_fir_sparse_f32(
   arm_fir_sparse_instance_f32 * S,
-  float32_t * pSrc,
+  const float32_t * pSrc,
   float32_t * pDst,
   float32_t * pScratchIn,
   uint32_t blockSize)
@@ -117,9 +117,9 @@ void ref_fir_sparse_q31(
   uint32_t blockSize)
 {
   q31_t *pState = S->pState;                     /* State pointer */
-  q31_t *pCoeffs = S->pCoeffs;                   /* Coefficient pointer */
+  const q31_t *pCoeffs = S->pCoeffs;                   /* Coefficient pointer */
-  q31_t *px;                                     /* Scratch buffer pointer */
+  const q31_t *px;                                     /* Scratch buffer pointer */
-  q31_t *py = pState;                            /* Temporary pointers for state buffer */
+  const q31_t *py = pState;                            /* Temporary pointers for state buffer */
   q31_t *pb = pScratchIn;                        /* Temporary pointers for scratch buffer */
   q31_t *pOut;                                   /* Destination pointer */
   q63_t out;                                     /* Temporary output variable */
@@ -247,10 +247,10 @@ void ref_fir_sparse_q15(
   q15_t *pState = S->pState;                     /* State pointer */
   q15_t *pIn = pSrc;                             /* Working pointer for input */
   q15_t *pOut = pDst;                            /* Working pointer for output */
-  q15_t *pCoeffs = S->pCoeffs;                   /* Coefficient pointer */
+  const q15_t *pCoeffs = S->pCoeffs;                   /* Coefficient pointer */
-  q15_t *px;                                     /* Temporary pointers for scratch buffer */
+  const q15_t *px;                                     /* Temporary pointers for scratch buffer */
   q15_t *pb = pScratchIn;                        /* Temporary pointers for scratch buffer */
-  q15_t *py = pState;                            /* Temporary pointers for state buffer */
+  const q15_t *py = pState;                            /* Temporary pointers for state buffer */
   int32_t *pTapDelay = S->pTapDelay;             /* Pointer to the array containing offset of the non-zero tap values. */
   uint32_t delaySize = S->maxDelay + blockSize;  /* state length */
   uint16_t numTaps = S->numTaps;                 /* Filter order */
@@ -366,9 +366,9 @@ void ref_fir_sparse_q7(
   uint32_t blockSize)
 {
   q7_t *pState = S->pState;                      /* State pointer */
-  q7_t *pCoeffs = S->pCoeffs;                    /* Coefficient pointer */
+  const q7_t *pCoeffs = S->pCoeffs;                    /* Coefficient pointer */
-  q7_t *px;                                      /* Scratch buffer pointer */
+  const q7_t *px;                                      /* Scratch buffer pointer */
-  q7_t *py = pState;                             /* Temporary pointers for state buffer */
+  const q7_t *py = pState;                             /* Temporary pointers for state buffer */
   q7_t *pb = pScratchIn;                         /* Temporary pointers for scratch buffer */
   q7_t *pOut = pDst;                             /* Destination pointer */
   int32_t *pTapDelay = S->pTapDelay;             /* Pointer to the array containing offset of the non-zero tap values. */

DSP_Lib_TestSuite/RefLibs/src/FilteringFunctions/iir_lattice.c

@@ -2,7 +2,7 @@
 
 void ref_iir_lattice_f32(
   const arm_iir_lattice_instance_f32 * S,
-  float32_t * pSrc,
+  const float32_t * pSrc,
   float32_t * pDst,
   uint32_t blockSize)
 {
@@ -95,7 +95,7 @@ void ref_iir_lattice_q31(
   q31_t fcurr, fnext = 0, gcurr = 0, gnext;      /* Temporary variables for lattice stages */
   q63_t acc;                                     /* Accumlator */
   uint32_t blkCnt, tapCnt;                       /* Temporary variables for counts */
-  q31_t *px1, *px2, *pk, *pv;                    /* Temporary pointers for state and coef */
+  const q31_t *px1, *px2, *pk, *pv;                    /* Temporary pointers for state and coef */
   uint32_t numStages = S->numStages;             /* number of stages */
   q31_t *pState;                                 /* State pointer */
   q31_t *pStateCurnt;                            /* State current pointer */
@@ -188,7 +188,7 @@ void ref_iir_lattice_q15(
   uint32_t stgCnt;                               /* Temporary variables for counts */
   q63_t acc;                                     /* Accumlator */
   uint32_t blkCnt, tapCnt;                       /* Temporary variables for counts */
-  q15_t *px1, *px2, *pk, *pv;                    /* temporary pointers for state and coef */
+  const q15_t *px1, *px2, *pk, *pv;                    /* temporary pointers for state and coef */
   uint32_t numStages = S->numStages;             /* number of stages */
   q15_t *pState;                                 /* State pointer */
   q15_t *pStateCurnt;                            /* State current pointer */

DSP_Lib_TestSuite/RefLibs/src/FilteringFunctions/lms.c

@@ -2,7 +2,7 @@
 
 void ref_lms_f32(
   const arm_lms_instance_f32 * S,
-  float32_t * pSrc,
+  const float32_t * pSrc,
   float32_t * pRef,
   float32_t * pOut,
   float32_t * pErr,
@@ -73,7 +73,7 @@ void ref_lms_f32(
 
 void ref_lms_norm_f32(
   arm_lms_norm_instance_f32 * S,
-  float32_t * pSrc,
+  const float32_t * pSrc,
   float32_t * pRef,
   float32_t * pOut,
   float32_t * pErr,
@@ -167,10 +167,10 @@ void ref_lms_q31(
 {
   q31_t *pState = S->pState;                     /* State pointer */
   uint32_t numTaps = S->numTaps;                 /* Number of filter coefficients in the filter */
-  q31_t *pCoeffs = S->pCoeffs;                   /* Coefficient pointer */
+  const q31_t *pCoeffs = S->pCoeffs;                   /* Coefficient pointer */
   q31_t *pStateCurnt;                            /* Points to the current sample of the state */
   q31_t mu = S->mu;                              /* Adaptive factor */
-  q31_t *px;                                     /* Temporary pointer for state */
+  const q31_t *px;                                     /* Temporary pointer for state */
   q31_t *pb;                                     /* Temporary pointer for coefficient buffer */
   uint32_t tapCnt, blkCnt;                       /* Loop counters */
   q63_t acc;                                     /* Accumulator */
@@ -282,9 +282,9 @@ void ref_lms_norm_q31(
   uint32_t blockSize)
 {
   q31_t *pState = S->pState;                     /* State pointer */
-  q31_t *pCoeffs = S->pCoeffs;                   /* Coefficient pointer */
+  const q31_t *pCoeffs = S->pCoeffs;                   /* Coefficient pointer */
   q31_t *pStateCurnt;                            /* Points to the current sample of the state */
-  q31_t *px, *pb;                                /* Temporary pointers for state and coefficient buffers */
+  const q31_t *px, *pb;                                /* Temporary pointers for state and coefficient buffers */
   q31_t mu = S->mu;                              /* Adaptive factor */
   uint32_t numTaps = S->numTaps;                 /* Number of filter coefficients in the filter */
   uint32_t tapCnt, blkCnt;                       /* Loop counters */
@@ -427,10 +427,10 @@ void ref_lms_q15(
 {
   q15_t *pState = S->pState;                     /* State pointer */
   uint32_t numTaps = S->numTaps;                 /* Number of filter coefficients in the filter */
-  q15_t *pCoeffs = S->pCoeffs;                   /* Coefficient pointer */
+  const q15_t *pCoeffs = S->pCoeffs;                   /* Coefficient pointer */
   q15_t *pStateCurnt;                            /* Points to the current sample of the state */
   q15_t mu = S->mu;                              /* Adaptive factor */
-  q15_t *px;                                     /* Temporary pointer for state */
+  const q15_t *px;                                     /* Temporary pointer for state */
   q15_t *pb;                                     /* Temporary pointer for coefficient buffer */
   uint32_t tapCnt, blkCnt;                       /* Loop counters */
   q63_t acc;                                     /* Accumulator */
@@ -544,9 +544,9 @@ void ref_lms_norm_q15(
   uint32_t blockSize)
 {
   q15_t *pState = S->pState;                     /* State pointer */
-  q15_t *pCoeffs = S->pCoeffs;                   /* Coefficient pointer */
+  const q15_t *pCoeffs = S->pCoeffs;                   /* Coefficient pointer */
   q15_t *pStateCurnt;                            /* Points to the current sample of the state */
-  q15_t *px, *pb;                                /* Temporary pointers for state and coefficient buffers */
+  const q15_t *px, *pb;                                /* Temporary pointers for state and coefficient buffers */
   q15_t mu = S->mu;                              /* Adaptive factor */
   uint32_t numTaps = S->numTaps;                 /* Number of filter coefficients in the filter */
   uint32_t tapCnt, blkCnt;                       /* Loop counters */

DSP_Lib_TestSuite/RefLibs/src/StatisticsFunctions/max.c

@@ -1,7 +1,7 @@
 #include "ref.h"
 
 void ref_max_f32(
-  float32_t * pSrc,
+  const float32_t * pSrc,
   uint32_t blockSize,
   float32_t * pResult,
   uint32_t * pIndex)

DSP_Lib_TestSuite/RefLibs/src/StatisticsFunctions/mean.c

@@ -1,7 +1,7 @@
 #include "ref.h"
 
 void ref_mean_f32(
-  float32_t * pSrc,
+  const float32_t * pSrc,
   uint32_t blockSize,
   float32_t * pResult)
 {

DSP_Lib_TestSuite/RefLibs/src/StatisticsFunctions/min.c

@@ -1,7 +1,7 @@
 #include "ref.h"
 
 void ref_min_f32(
-  float32_t * pSrc,
+  const float32_t * pSrc,
   uint32_t blockSize,
   float32_t * pResult,
   uint32_t * pIndex)

DSP_Lib_TestSuite/RefLibs/src/StatisticsFunctions/power.c

@@ -1,7 +1,7 @@
 #include "ref.h"
 
 void ref_power_f32(
-  float32_t * pSrc,
+  const float32_t * pSrc,
   uint32_t blockSize,
   float32_t * pResult)
 {

DSP_Lib_TestSuite/RefLibs/src/StatisticsFunctions/rms.c

@@ -1,7 +1,7 @@
 #include "ref.h"
 
 void ref_rms_f32(
-  float32_t * pSrc,
+  const float32_t * pSrc,
   uint32_t blockSize,
   float32_t * pResult)
 {

DSP_Lib_TestSuite/RefLibs/src/StatisticsFunctions/std.c

@@ -1,7 +1,7 @@
 #include "ref.h"
 
 void ref_std_f32(
-  float32_t * pSrc,
+  const float32_t * pSrc,
   uint32_t blockSize,
   float32_t * pResult)
 {

DSP_Lib_TestSuite/RefLibs/src/StatisticsFunctions/var.c

@@ -1,7 +1,7 @@
 #include "ref.h"
 
 void ref_var_f32(
-  float32_t * pSrc,
+  const float32_t * pSrc,
   uint32_t blockSize,
   float32_t * pResult)
 {

DSP_Lib_TestSuite/RefLibs/src/SupportFunctions/copy.c

@@ -1,7 +1,7 @@
 #include "ref.h"
 
 void ref_copy_f32(
-  float32_t * pSrc,
+  const float32_t * pSrc,
   float32_t * pDst,
   uint32_t blockSize)
 {

DSP_Lib_TestSuite/RefLibs/src/SupportFunctions/float_to_fixed.c

@@ -1,7 +1,7 @@
 #include "ref.h"
 
 void ref_float_to_q31(
-  float32_t * pSrc,
+  const float32_t * pSrc,
   q31_t * pDst,
   uint32_t blockSize)
 {
@@ -18,7 +18,7 @@ void ref_float_to_q31(
 }
 	
 void ref_float_to_q15(
-  float32_t * pSrc,
+  const float32_t * pSrc,
   q15_t * pDst,
   uint32_t blockSize)
 {
@@ -35,7 +35,7 @@ void ref_float_to_q15(
 }
 	
 void ref_float_to_q7(
-  float32_t * pSrc,
+  const float32_t * pSrc,
   q7_t * pDst,
   uint32_t blockSize)
 {

DSP_Lib_TestSuite/RefLibs/src/TransformFunctions/cfft.c

@@ -219,7 +219,7 @@ void ref_cfft_q15(
 
 void ref_cfft_radix2_f32(
 	const arm_cfft_radix2_instance_f32 * S,
-	float32_t * pSrc)
+	const float32_t * pSrc)
 {
 	switch(S->fftLen)
 	{
@@ -409,7 +409,7 @@ void ref_cfft_radix2_q15(
 
 void ref_cfft_radix4_f32(
 	const arm_cfft_radix4_instance_f32 * S,
-	float32_t * pSrc)
+	const float32_t * pSrc)
 {		
 	switch(S->fftLen)
 	{

DSP_Lib_TestSuite/RefLibs/src/TransformFunctions/rfft.c

@@ -3,7 +3,7 @@
 	
 void ref_rfft_f32(
 	arm_rfft_instance_f32 * S,
-  float32_t * pSrc,
+  const float32_t * pSrc,
   float32_t * pDst)
 {
 	uint32_t i;

Include/arm_math.h

@@ -976,7 +976,7 @@ extern "C"
   {
     uint16_t numTaps;        /**< number of filter coefficients in the filter. */
     q7_t *pState;            /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
-    q7_t *pCoeffs;           /**< points to the coefficient array. The array is of length numTaps.*/
+    const q7_t *pCoeffs;           /**< points to the coefficient array. The array is of length numTaps.*/
   } arm_fir_instance_q7;
 
   /**
@@ -986,7 +986,7 @@ extern "C"
   {
     uint16_t numTaps;         /**< number of filter coefficients in the filter. */
     q15_t *pState;            /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
-    q15_t *pCoeffs;           /**< points to the coefficient array. The array is of length numTaps.*/
+    const q15_t *pCoeffs;           /**< points to the coefficient array. The array is of length numTaps.*/
   } arm_fir_instance_q15;
 
   /**
@@ -996,7 +996,7 @@ extern "C"
   {
     uint16_t numTaps;         /**< number of filter coefficients in the filter. */
     q31_t *pState;            /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
-    q31_t *pCoeffs;           /**< points to the coefficient array. The array is of length numTaps. */
+    const q31_t *pCoeffs;           /**< points to the coefficient array. The array is of length numTaps. */
   } arm_fir_instance_q31;
 
   /**
@@ -1006,7 +1006,7 @@ extern "C"
   {
     uint16_t numTaps;     /**< number of filter coefficients in the filter. */
     float32_t *pState;    /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
-    float32_t *pCoeffs;   /**< points to the coefficient array. The array is of length numTaps. */
+    const float32_t *pCoeffs;   /**< points to the coefficient array. The array is of length numTaps. */
   } arm_fir_instance_f32;
 
 
@@ -1035,7 +1035,7 @@ extern "C"
   void arm_fir_init_q7(
   arm_fir_instance_q7 * S,
   uint16_t numTaps,
-  q7_t * pCoeffs,
+  const q7_t * pCoeffs,
   q7_t * pState,
   uint32_t blockSize);
 
@@ -1081,7 +1081,7 @@ extern "C"
   arm_status arm_fir_init_q15(
   arm_fir_instance_q15 * S,
   uint16_t numTaps,
-  q15_t * pCoeffs,
+  const q15_t * pCoeffs,
   q15_t * pState,
   uint32_t blockSize);
 
@@ -1125,7 +1125,7 @@ extern "C"
   void arm_fir_init_q31(
   arm_fir_instance_q31 * S,
   uint16_t numTaps,
-  q31_t * pCoeffs,
+  const q31_t * pCoeffs,
   q31_t * pState,
   uint32_t blockSize);
 
@@ -1155,7 +1155,7 @@ extern "C"
   void arm_fir_init_f32(
   arm_fir_instance_f32 * S,
   uint16_t numTaps,
-  float32_t * pCoeffs,
+  const float32_t * pCoeffs,
   float32_t * pState,
   uint32_t blockSize);
 
@@ -1167,7 +1167,7 @@ extern "C"
   {
     int8_t numStages;        /**< number of 2nd order stages in the filter.  Overall order is 2*numStages. */
     q15_t *pState;           /**< Points to the array of state coefficients.  The array is of length 4*numStages. */
-    q15_t *pCoeffs;          /**< Points to the array of coefficients.  The array is of length 5*numStages. */
+    const q15_t *pCoeffs;          /**< Points to the array of coefficients.  The array is of length 5*numStages. */
     int8_t postShift;        /**< Additional shift, in bits, applied to each output sample. */
   } arm_biquad_casd_df1_inst_q15;
 
@@ -1178,7 +1178,7 @@ extern "C"
   {
     uint32_t numStages;      /**< number of 2nd order stages in the filter.  Overall order is 2*numStages. */
     q31_t *pState;           /**< Points to the array of state coefficients.  The array is of length 4*numStages. */
-    q31_t *pCoeffs;          /**< Points to the array of coefficients.  The array is of length 5*numStages. */
+    const q31_t *pCoeffs;          /**< Points to the array of coefficients.  The array is of length 5*numStages. */
     uint8_t postShift;       /**< Additional shift, in bits, applied to each output sample. */
   } arm_biquad_casd_df1_inst_q31;
 
@@ -1189,7 +1189,7 @@ extern "C"
   {
     uint32_t numStages;      /**< number of 2nd order stages in the filter.  Overall order is 2*numStages. */
     float32_t *pState;       /**< Points to the array of state coefficients.  The array is of length 4*numStages. */
-    float32_t *pCoeffs;      /**< Points to the array of coefficients.  The array is of length 5*numStages. */
+    const float32_t *pCoeffs;      /**< Points to the array of coefficients.  The array is of length 5*numStages. */
   } arm_biquad_casd_df1_inst_f32;
 
 
@@ -1218,7 +1218,7 @@ extern "C"
   void arm_biquad_cascade_df1_init_q15(
   arm_biquad_casd_df1_inst_q15 * S,
   uint8_t numStages,
-  q15_t * pCoeffs,
+  const q15_t * pCoeffs,
   q15_t * pState,
   int8_t postShift);
 
@@ -1276,7 +1276,7 @@ extern "C"
   void arm_biquad_cascade_df1_init_q31(
   arm_biquad_casd_df1_inst_q31 * S,
   uint8_t numStages,
-  q31_t * pCoeffs,
+  const q31_t * pCoeffs,
   q31_t * pState,
   int8_t postShift);
 
@@ -1305,7 +1305,7 @@ extern "C"
   void arm_biquad_cascade_df1_init_f32(
   arm_biquad_casd_df1_inst_f32 * S,
   uint8_t numStages,
-  float32_t * pCoeffs,
+  const float32_t * pCoeffs,
   float32_t * pState);
 
 
@@ -1912,7 +1912,7 @@ extern "C"
 /* Deprecated */
   void arm_cfft_radix2_q15(
   const arm_cfft_radix2_instance_q15 * S,
-  const q15_t * pSrc);
+  q15_t * pSrc);
 
 
   /**
@@ -1939,7 +1939,7 @@ extern "C"
 /* Deprecated */
   void arm_cfft_radix4_q15(
   const arm_cfft_radix4_instance_q15 * S,
-  const q15_t * pSrc);
+  q15_t * pSrc);
 
   /**
    * @brief Instance structure for the Radix-2 Q31 CFFT/CIFFT function.
@@ -1965,7 +1965,7 @@ extern "C"
 /* Deprecated */
   void arm_cfft_radix2_q31(
   const arm_cfft_radix2_instance_q31 * S,
-  const q31_t * pSrc);
+  q31_t * pSrc);
 
   /**
    * @brief Instance structure for the Q31 CFFT/CIFFT function.
@@ -1984,7 +1984,7 @@ extern "C"
 /* Deprecated */
   void arm_cfft_radix4_q31(
   const arm_cfft_radix4_instance_q31 * S,
-  const q31_t * pSrc);
+  q31_t * pSrc);
 
 /* Deprecated */
   arm_status arm_cfft_radix4_init_q31(
@@ -2018,7 +2018,7 @@ extern "C"
 /* Deprecated */
   void arm_cfft_radix2_f32(
   const arm_cfft_radix2_instance_f32 * S,
-  const float32_t * pSrc);
+  float32_t * pSrc);
 
   /**
    * @brief Instance structure for the floating-point CFFT/CIFFT function.
@@ -2045,7 +2045,7 @@ extern "C"
 /* Deprecated */
   void arm_cfft_radix4_f32(
   const arm_cfft_radix4_instance_f32 * S,
-  const float32_t * pSrc);
+  float32_t * pSrc);
 
   /**
    * @brief Instance structure for the fixed-point CFFT/CIFFT function.
@@ -3233,7 +3233,7 @@ void arm_rfft_fast_f32(
   {
     uint8_t M;                  /**< decimation factor. */
     uint16_t numTaps;           /**< number of coefficients in the filter. */
-    q15_t *pCoeffs;             /**< points to the coefficient array. The array is of length numTaps.*/
+    const q15_t *pCoeffs;             /**< points to the coefficient array. The array is of length numTaps.*/
     q15_t *pState;              /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
   } arm_fir_decimate_instance_q15;
 
@@ -3244,7 +3244,7 @@ void arm_rfft_fast_f32(
   {
     uint8_t M;                  /**< decimation factor. */
     uint16_t numTaps;           /**< number of coefficients in the filter. */
-    q31_t *pCoeffs;             /**< points to the coefficient array. The array is of length numTaps.*/
+    const q31_t *pCoeffs;             /**< points to the coefficient array. The array is of length numTaps.*/
     q31_t *pState;              /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
   } arm_fir_decimate_instance_q31;
 
@@ -3255,7 +3255,7 @@ void arm_rfft_fast_f32(
   {
     uint8_t M;                  /**< decimation factor. */
     uint16_t numTaps;           /**< number of coefficients in the filter. */
-    float32_t *pCoeffs;         /**< points to the coefficient array. The array is of length numTaps.*/
+    const float32_t *pCoeffs;         /**< points to the coefficient array. The array is of length numTaps.*/
     float32_t *pState;          /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
   } arm_fir_decimate_instance_f32;
 
@@ -3289,7 +3289,7 @@ void arm_rfft_fast_f32(
   arm_fir_decimate_instance_f32 * S,
   uint16_t numTaps,
   uint8_t M,
-  float32_t * pCoeffs,
+  const float32_t * pCoeffs,
   float32_t * pState,
   uint32_t blockSize);
 
@@ -3337,7 +3337,7 @@ void arm_rfft_fast_f32(
   arm_fir_decimate_instance_q15 * S,
   uint16_t numTaps,
   uint8_t M,
-  q15_t * pCoeffs,
+  const q15_t * pCoeffs,
   q15_t * pState,
   uint32_t blockSize);
 
@@ -3384,7 +3384,7 @@ void arm_rfft_fast_f32(
   arm_fir_decimate_instance_q31 * S,
   uint16_t numTaps,
   uint8_t M,
-  q31_t * pCoeffs,
+  const q31_t * pCoeffs,
   q31_t * pState,
   uint32_t blockSize);
 
@@ -3396,7 +3396,7 @@ void arm_rfft_fast_f32(
   {
     uint8_t L;                      /**< upsample factor. */
     uint16_t phaseLength;           /**< length of each polyphase filter component. */
-    q15_t *pCoeffs;                 /**< points to the coefficient array. The array is of length L*phaseLength. */
+    const q15_t *pCoeffs;                 /**< points to the coefficient array. The array is of length L*phaseLength. */
     q15_t *pState;                  /**< points to the state variable array. The array is of length blockSize+phaseLength-1. */
   } arm_fir_interpolate_instance_q15;
 
@@ -3407,7 +3407,7 @@ void arm_rfft_fast_f32(
   {
     uint8_t L;                      /**< upsample factor. */
     uint16_t phaseLength;           /**< length of each polyphase filter component. */
-    q31_t *pCoeffs;                 /**< points to the coefficient array. The array is of length L*phaseLength. */
+    const q31_t *pCoeffs;                 /**< points to the coefficient array. The array is of length L*phaseLength. */
     q31_t *pState;                  /**< points to the state variable array. The array is of length blockSize+phaseLength-1. */
   } arm_fir_interpolate_instance_q31;
 
@@ -3418,7 +3418,7 @@ void arm_rfft_fast_f32(
   {
     uint8_t L;                     /**< upsample factor. */
     uint16_t phaseLength;          /**< length of each polyphase filter component. */
-    float32_t *pCoeffs;            /**< points to the coefficient array. The array is of length L*phaseLength. */
+    const float32_t *pCoeffs;      /**< points to the coefficient array. The array is of length L*phaseLength. */
     float32_t *pState;             /**< points to the state variable array. The array is of length phaseLength+numTaps-1. */
   } arm_fir_interpolate_instance_f32;
 
@@ -3452,7 +3452,7 @@ void arm_rfft_fast_f32(
   arm_fir_interpolate_instance_q15 * S,
   uint8_t L,
   uint16_t numTaps,
-  q15_t * pCoeffs,
+  const q15_t * pCoeffs,
   q15_t * pState,
   uint32_t blockSize);
 
@@ -3486,7 +3486,7 @@ void arm_rfft_fast_f32(
   arm_fir_interpolate_instance_q31 * S,
   uint8_t L,
   uint16_t numTaps,
-  q31_t * pCoeffs,
+  const q31_t * pCoeffs,
   q31_t * pState,
   uint32_t blockSize);
 
@@ -3520,7 +3520,7 @@ void arm_rfft_fast_f32(
   arm_fir_interpolate_instance_f32 * S,
   uint8_t L,
   uint16_t numTaps,
-  float32_t * pCoeffs,
+  const float32_t * pCoeffs,
   float32_t * pState,
   uint32_t blockSize);
 
@@ -3532,7 +3532,7 @@ void arm_rfft_fast_f32(
   {
     uint8_t numStages;       /**< number of 2nd order stages in the filter.  Overall order is 2*numStages. */
     q63_t *pState;           /**< points to the array of state coefficients.  The array is of length 4*numStages. */
-    q31_t *pCoeffs;          /**< points to the array of coefficients.  The array is of length 5*numStages. */
+    const q31_t *pCoeffs;          /**< points to the array of coefficients.  The array is of length 5*numStages. */
     uint8_t postShift;       /**< additional shift, in bits, applied to each output sample. */
   } arm_biquad_cas_df1_32x64_ins_q31;
 
@@ -3560,7 +3560,7 @@ void arm_rfft_fast_f32(
   void arm_biquad_cas_df1_32x64_init_q31(
   arm_biquad_cas_df1_32x64_ins_q31 * S,
   uint8_t numStages,
-  q31_t * pCoeffs,
+  const q31_t * pCoeffs,
   q63_t * pState,
   uint8_t postShift);
 
@@ -3572,7 +3572,7 @@ void arm_rfft_fast_f32(
   {
     uint8_t numStages;         /**< number of 2nd order stages in the filter.  Overall order is 2*numStages. */
     float32_t *pState;         /**< points to the array of state coefficients.  The array is of length 2*numStages. */
-    float32_t *pCoeffs;        /**< points to the array of coefficients.  The array is of length 5*numStages. */
+    const float32_t *pCoeffs;  /**< points to the array of coefficients.  The array is of length 5*numStages. */
   } arm_biquad_cascade_df2T_instance_f32;
 
   /**
@@ -3582,7 +3582,7 @@ void arm_rfft_fast_f32(
   {
     uint8_t numStages;         /**< number of 2nd order stages in the filter.  Overall order is 2*numStages. */
     float32_t *pState;         /**< points to the array of state coefficients.  The array is of length 4*numStages. */
-    float32_t *pCoeffs;        /**< points to the array of coefficients.  The array is of length 5*numStages. */
+    const float32_t *pCoeffs;  /**< points to the array of coefficients.  The array is of length 5*numStages. */
   } arm_biquad_cascade_stereo_df2T_instance_f32;
 
   /**
@@ -3648,7 +3648,7 @@ void arm_rfft_fast_f32(
   void arm_biquad_cascade_df2T_init_f32(
   arm_biquad_cascade_df2T_instance_f32 * S,
   uint8_t numStages,
-  float32_t * pCoeffs,
+  const float32_t * pCoeffs,
   float32_t * pState);
 
 
@@ -3662,7 +3662,7 @@ void arm_rfft_fast_f32(
   void arm_biquad_cascade_stereo_df2T_init_f32(
   arm_biquad_cascade_stereo_df2T_instance_f32 * S,
   uint8_t numStages,
-  float32_t * pCoeffs,
+  const float32_t * pCoeffs,
   float32_t * pState);
 
 
@@ -3687,7 +3687,7 @@ void arm_rfft_fast_f32(
   {
     uint16_t numStages;                  /**< number of filter stages. */
     q15_t *pState;                       /**< points to the state variable array. The array is of length numStages. */
-    q15_t *pCoeffs;                      /**< points to the coefficient array. The array is of length numStages. */
+    const q15_t *pCoeffs;                      /**< points to the coefficient array. The array is of length numStages. */
   } arm_fir_lattice_instance_q15;
 
   /**
@@ -3697,7 +3697,7 @@ void arm_rfft_fast_f32(
   {
     uint16_t numStages;                  /**< number of filter stages. */
     q31_t *pState;                       /**< points to the state variable array. The array is of length numStages. */
-    q31_t *pCoeffs;                      /**< points to the coefficient array. The array is of length numStages. */
+    const q31_t *pCoeffs;                      /**< points to the coefficient array. The array is of length numStages. */
   } arm_fir_lattice_instance_q31;
 
   /**
@@ -3707,7 +3707,7 @@ void arm_rfft_fast_f32(
   {
     uint16_t numStages;                  /**< number of filter stages. */
     float32_t *pState;                   /**< points to the state variable array. The array is of length numStages. */
-    float32_t *pCoeffs;                  /**< points to the coefficient array. The array is of length numStages. */
+    const float32_t *pCoeffs;            /**< points to the coefficient array. The array is of length numStages. */
   } arm_fir_lattice_instance_f32;
 
 
@@ -3721,7 +3721,7 @@ void arm_rfft_fast_f32(
   void arm_fir_lattice_init_q15(
   arm_fir_lattice_instance_q15 * S,
   uint16_t numStages,
-  q15_t * pCoeffs,
+  const q15_t * pCoeffs,
   q15_t * pState);
 
 
@@ -3749,7 +3749,7 @@ void arm_rfft_fast_f32(
   void arm_fir_lattice_init_q31(
   arm_fir_lattice_instance_q31 * S,
   uint16_t numStages,
-  q31_t * pCoeffs,
+  const q31_t * pCoeffs,
   q31_t * pState);
 
 
@@ -3777,7 +3777,7 @@ void arm_rfft_fast_f32(
   void arm_fir_lattice_init_f32(
   arm_fir_lattice_instance_f32 * S,
   uint16_t numStages,
-  float32_t * pCoeffs,
+  const float32_t * pCoeffs,
   float32_t * pState);
 
 
@@ -3932,7 +3932,7 @@ void arm_rfft_fast_f32(
   {
     uint16_t numTaps;    /**< number of coefficients in the filter. */
     float32_t *pState;   /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
-    float32_t *pCoeffs;  /**< points to the coefficient array. The array is of length numTaps. */
+    const float32_t *pCoeffs;  /**< points to the coefficient array. The array is of length numTaps. */
     float32_t mu;        /**< step size that controls filter coefficient updates. */
   } arm_lms_instance_f32;
 
@@ -3967,7 +3967,7 @@ void arm_rfft_fast_f32(
   void arm_lms_init_f32(
   arm_lms_instance_f32 * S,
   uint16_t numTaps,
-  float32_t * pCoeffs,
+  const float32_t * pCoeffs,
   float32_t * pState,
   float32_t mu,
   uint32_t blockSize);
@@ -3980,7 +3980,7 @@ void arm_rfft_fast_f32(
   {
     uint16_t numTaps;    /**< number of coefficients in the filter. */
     q15_t *pState;       /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
-    q15_t *pCoeffs;      /**< points to the coefficient array. The array is of length numTaps. */
+    const q15_t *pCoeffs;      /**< points to the coefficient array. The array is of length numTaps. */
     q15_t mu;            /**< step size that controls filter coefficient updates. */
     uint32_t postShift;  /**< bit shift applied to coefficients. */
   } arm_lms_instance_q15;
@@ -3999,7 +3999,7 @@ void arm_rfft_fast_f32(
   void arm_lms_init_q15(
   arm_lms_instance_q15 * S,
   uint16_t numTaps,
-  q15_t * pCoeffs,
+  const q15_t * pCoeffs,
   q15_t * pState,
   q15_t mu,
   uint32_t blockSize,
@@ -4031,7 +4031,7 @@ void arm_rfft_fast_f32(
   {
     uint16_t numTaps;    /**< number of coefficients in the filter. */
     q31_t *pState;       /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
-    q31_t *pCoeffs;      /**< points to the coefficient array. The array is of length numTaps. */
+    const q31_t *pCoeffs;      /**< points to the coefficient array. The array is of length numTaps. */
     q31_t mu;            /**< step size that controls filter coefficient updates. */
     uint32_t postShift;  /**< bit shift applied to coefficients. */
   } arm_lms_instance_q31;
@@ -4068,7 +4068,7 @@ void arm_rfft_fast_f32(
   void arm_lms_init_q31(
   arm_lms_instance_q31 * S,
   uint16_t numTaps,
-  q31_t * pCoeffs,
+  const q31_t * pCoeffs,
   q31_t * pState,
   q31_t mu,
   uint32_t blockSize,
@@ -4082,7 +4082,7 @@ void arm_rfft_fast_f32(
   {
     uint16_t numTaps;     /**< number of coefficients in the filter. */
     float32_t *pState;    /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
-    float32_t *pCoeffs;   /**< points to the coefficient array. The array is of length numTaps. */
+    const float32_t *pCoeffs;   /**< points to the coefficient array. The array is of length numTaps. */
     float32_t mu;         /**< step size that control filter coefficient updates. */
     float32_t energy;     /**< saves previous frame energy. */
     float32_t x0;         /**< saves previous input sample. */
@@ -4119,7 +4119,7 @@ void arm_rfft_fast_f32(
   void arm_lms_norm_init_f32(
   arm_lms_norm_instance_f32 * S,
   uint16_t numTaps,
-  float32_t * pCoeffs,
+  const float32_t * pCoeffs,
   float32_t * pState,
   float32_t mu,
   uint32_t blockSize);
@@ -4132,7 +4132,7 @@ void arm_rfft_fast_f32(
   {
     uint16_t numTaps;     /**< number of coefficients in the filter. */
     q31_t *pState;        /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
-    q31_t *pCoeffs;       /**< points to the coefficient array. The array is of length numTaps. */
+    const q31_t *pCoeffs;       /**< points to the coefficient array. The array is of length numTaps. */
     q31_t mu;             /**< step size that controls filter coefficient updates. */
     uint8_t postShift;    /**< bit shift applied to coefficients. */
     q31_t *recipTable;    /**< points to the reciprocal initial value table. */
@@ -4172,7 +4172,7 @@ void arm_rfft_fast_f32(
   void arm_lms_norm_init_q31(
   arm_lms_norm_instance_q31 * S,
   uint16_t numTaps,
-  q31_t * pCoeffs,
+  const q31_t * pCoeffs,
   q31_t * pState,
   q31_t mu,
   uint32_t blockSize,
@@ -4186,7 +4186,7 @@ void arm_rfft_fast_f32(
   {
     uint16_t numTaps;     /**< Number of coefficients in the filter. */
     q15_t *pState;        /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
-    q15_t *pCoeffs;       /**< points to the coefficient array. The array is of length numTaps. */
+    const q15_t *pCoeffs;       /**< points to the coefficient array. The array is of length numTaps. */
     q15_t mu;             /**< step size that controls filter coefficient updates. */
     uint8_t postShift;    /**< bit shift applied to coefficients. */
     q15_t *recipTable;    /**< Points to the reciprocal initial value table. */
@@ -4226,7 +4226,7 @@ void arm_rfft_fast_f32(
   void arm_lms_norm_init_q15(
   arm_lms_norm_instance_q15 * S,
   uint16_t numTaps,
-  q15_t * pCoeffs,
+  const q15_t * pCoeffs,
   q15_t * pState,
   q15_t mu,
   uint32_t blockSize,
@@ -4395,7 +4395,7 @@ void arm_rfft_fast_f32(
     uint16_t numTaps;             /**< number of coefficients in the filter. */
     uint16_t stateIndex;          /**< state buffer index.  Points to the oldest sample in the state buffer. */
     float32_t *pState;            /**< points to the state buffer array. The array is of length maxDelay+blockSize-1. */
-    float32_t *pCoeffs;           /**< points to the coefficient array. The array is of length numTaps.*/
+    const float32_t *pCoeffs;           /**< points to the coefficient array. The array is of length numTaps.*/
     uint16_t maxDelay;            /**< maximum offset specified by the pTapDelay array. */
     int32_t *pTapDelay;           /**< points to the array of delay values.  The array is of length numTaps. */
   } arm_fir_sparse_instance_f32;
@@ -4408,7 +4408,7 @@ void arm_rfft_fast_f32(
     uint16_t numTaps;             /**< number of coefficients in the filter. */
     uint16_t stateIndex;          /**< state buffer index.  Points to the oldest sample in the state buffer. */
     q31_t *pState;                /**< points to the state buffer array. The array is of length maxDelay+blockSize-1. */
-    q31_t *pCoeffs;               /**< points to the coefficient array. The array is of length numTaps.*/
+    const q31_t *pCoeffs;               /**< points to the coefficient array. The array is of length numTaps.*/
     uint16_t maxDelay;            /**< maximum offset specified by the pTapDelay array. */
     int32_t *pTapDelay;           /**< points to the array of delay values.  The array is of length numTaps. */
   } arm_fir_sparse_instance_q31;
@@ -4421,7 +4421,7 @@ void arm_rfft_fast_f32(
     uint16_t numTaps;             /**< number of coefficients in the filter. */
     uint16_t stateIndex;          /**< state buffer index.  Points to the oldest sample in the state buffer. */
     q15_t *pState;                /**< points to the state buffer array. The array is of length maxDelay+blockSize-1. */
-    q15_t *pCoeffs;               /**< points to the coefficient array. The array is of length numTaps.*/
+    const q15_t *pCoeffs;               /**< points to the coefficient array. The array is of length numTaps.*/
     uint16_t maxDelay;            /**< maximum offset specified by the pTapDelay array. */
     int32_t *pTapDelay;           /**< points to the array of delay values.  The array is of length numTaps. */
   } arm_fir_sparse_instance_q15;
@@ -4434,7 +4434,7 @@ void arm_rfft_fast_f32(
     uint16_t numTaps;             /**< number of coefficients in the filter. */
     uint16_t stateIndex;          /**< state buffer index.  Points to the oldest sample in the state buffer. */
     q7_t *pState;                 /**< points to the state buffer array. The array is of length maxDelay+blockSize-1. */
-    q7_t *pCoeffs;                /**< points to the coefficient array. The array is of length numTaps.*/
+    const q7_t *pCoeffs;                /**< points to the coefficient array. The array is of length numTaps.*/
     uint16_t maxDelay;            /**< maximum offset specified by the pTapDelay array. */
     int32_t *pTapDelay;           /**< points to the array of delay values.  The array is of length numTaps. */
   } arm_fir_sparse_instance_q7;
@@ -4469,7 +4469,7 @@ void arm_rfft_fast_f32(
   void arm_fir_sparse_init_f32(
   arm_fir_sparse_instance_f32 * S,
   uint16_t numTaps,
-  float32_t * pCoeffs,
+  const float32_t * pCoeffs,
   float32_t * pState,
   int32_t * pTapDelay,
   uint16_t maxDelay,
@@ -4505,7 +4505,7 @@ void arm_rfft_fast_f32(
   void arm_fir_sparse_init_q31(
   arm_fir_sparse_instance_q31 * S,
   uint16_t numTaps,
-  q31_t * pCoeffs,
+  const q31_t * pCoeffs,
   q31_t * pState,
   int32_t * pTapDelay,
   uint16_t maxDelay,
@@ -4543,7 +4543,7 @@ void arm_rfft_fast_f32(
   void arm_fir_sparse_init_q15(
   arm_fir_sparse_instance_q15 * S,
   uint16_t numTaps,
-  q15_t * pCoeffs,
+  const q15_t * pCoeffs,
   q15_t * pState,
   int32_t * pTapDelay,
   uint16_t maxDelay,
@@ -4581,7 +4581,7 @@ void arm_rfft_fast_f32(
   void arm_fir_sparse_init_q7(
   arm_fir_sparse_instance_q7 * S,
   uint16_t numTaps,
-  q7_t * pCoeffs,
+  const q7_t * pCoeffs,
   q7_t * pState,
   int32_t * pTapDelay,
   uint16_t maxDelay,

Source/BasicMathFunctions/arm_abs_f32.c

@@ -61,7 +61,7 @@
  */
 
 void arm_abs_f32(
-  float32_t * pSrc,
+  const float32_t * pSrc,
   float32_t * pDst,
   uint32_t blockSize)
 {

Source/BasicMathFunctions/arm_abs_q15.c

@@ -51,7 +51,7 @@
  */
 
 void arm_abs_q15(
-  q15_t * pSrc,
+  const q15_t * pSrc,
   q15_t * pDst,
   uint32_t blockSize)
 {

Source/BasicMathFunctions/arm_abs_q31.c

@@ -52,7 +52,7 @@
  */
 
 void arm_abs_q31(
-  q31_t * pSrc,
+  const q31_t * pSrc,
   q31_t * pDst,
   uint32_t blockSize)
 {

Source/BasicMathFunctions/arm_abs_q7.c

@@ -55,7 +55,7 @@
  */
 
 void arm_abs_q7(
-  q7_t * pSrc,
+  const q7_t * pSrc,
   q7_t * pDst,
   uint32_t blockSize)
 {

Source/BasicMathFunctions/arm_add_f32.c

@@ -59,8 +59,8 @@
  */
 
 void arm_add_f32(
-  float32_t * pSrcA,
+  const float32_t * pSrcA,
-  float32_t * pSrcB,
+  const float32_t * pSrcB,
   float32_t * pDst,
   uint32_t blockSize)
 {

Source/BasicMathFunctions/arm_add_q15.c

@@ -52,8 +52,8 @@
  */
 
 void arm_add_q15(
-  q15_t * pSrcA,
+  const q15_t * pSrcA,
-  q15_t * pSrcB,
+  const q15_t * pSrcB,
   q15_t * pDst,
   uint32_t blockSize)
 {

Source/BasicMathFunctions/arm_add_q31.c

@@ -53,8 +53,8 @@
  */
 
 void arm_add_q31(
-  q31_t * pSrcA,
+  const q31_t * pSrcA,
-  q31_t * pSrcB,
+  const q31_t * pSrcB,
   q31_t * pDst,
   uint32_t blockSize)
 {

Source/BasicMathFunctions/arm_add_q7.c

@@ -52,8 +52,8 @@
  */
 
 void arm_add_q7(
-  q7_t * pSrcA,
+  const q7_t * pSrcA,
-  q7_t * pSrcB,
+  const q7_t * pSrcB,
   q7_t * pDst,
   uint32_t blockSize)
 {

Source/BasicMathFunctions/arm_dot_prod_f32.c

@@ -61,8 +61,8 @@
 
 
 void arm_dot_prod_f32(
-  float32_t * pSrcA,
+  const float32_t * pSrcA,
-  float32_t * pSrcB,
+  const float32_t * pSrcB,
   uint32_t blockSize,
   float32_t * result)
 {

Source/BasicMathFunctions/arm_dot_prod_q15.c

@@ -55,8 +55,8 @@
  */
 
 void arm_dot_prod_q15(
-  q15_t * pSrcA,
+  const q15_t * pSrcA,
-  q15_t * pSrcB,
+  const q15_t * pSrcB,
   uint32_t blockSize,
   q63_t * result)
 {

Source/BasicMathFunctions/arm_dot_prod_q31.c

@@ -56,8 +56,8 @@
  */
 
 void arm_dot_prod_q31(
-  q31_t * pSrcA,
+  const q31_t * pSrcA,
-  q31_t * pSrcB,
+  const q31_t * pSrcB,
   uint32_t blockSize,
   q63_t * result)
 {

Source/BasicMathFunctions/arm_dot_prod_q7.c

@@ -55,8 +55,8 @@
  */
 
 void arm_dot_prod_q7(
-  q7_t * pSrcA,
+  const q7_t * pSrcA,
-  q7_t * pSrcB,
+  const q7_t * pSrcB,
   uint32_t blockSize,
   q31_t * result)
 {

Source/BasicMathFunctions/arm_mult_f32.c

@@ -59,8 +59,8 @@
  */
 
 void arm_mult_f32(
-  float32_t * pSrcA,
+  const float32_t * pSrcA,
-  float32_t * pSrcB,
+  const float32_t * pSrcB,
   float32_t * pDst,
   uint32_t blockSize)
 {

Source/BasicMathFunctions/arm_mult_q15.c

@@ -53,8 +53,8 @@
  */
 
 void arm_mult_q15(
-  q15_t * pSrcA,
+  const q15_t * pSrcA,
-  q15_t * pSrcB,
+  const q15_t * pSrcB,
   q15_t * pDst,
   uint32_t blockSize)
 {

Source/BasicMathFunctions/arm_mult_q31.c

@@ -52,8 +52,8 @@
  */
 
 void arm_mult_q31(
-  q31_t * pSrcA,
+  const q31_t * pSrcA,
-  q31_t * pSrcB,
+  const q31_t * pSrcB,
   q31_t * pDst,
   uint32_t blockSize)
 {

Source/BasicMathFunctions/arm_mult_q7.c

@@ -52,8 +52,8 @@
  */
 
 void arm_mult_q7(
-  q7_t * pSrcA,
+  const q7_t * pSrcA,
-  q7_t * pSrcB,
+  const q7_t * pSrcB,
   q7_t * pDst,
   uint32_t blockSize)
 {

Source/BasicMathFunctions/arm_negate_f32.c

@@ -60,7 +60,7 @@
  */
 
 void arm_negate_f32(
-  float32_t * pSrc,
+  const float32_t * pSrc,
   float32_t * pDst,
   uint32_t blockSize)
 {

Source/BasicMathFunctions/arm_negate_q15.c

@@ -55,7 +55,7 @@
  */
 
 void arm_negate_q15(
-  q15_t * pSrc,
+  const q15_t * pSrc,
   q15_t * pDst,
   uint32_t blockSize)
 {

Source/BasicMathFunctions/arm_negate_q31.c

@@ -51,7 +51,7 @@
  */
 
 void arm_negate_q31(
-  q31_t * pSrc,
+  const q31_t * pSrc,
   q31_t * pDst,
   uint32_t blockSize)
 {

Source/BasicMathFunctions/arm_negate_q7.c

@@ -51,7 +51,7 @@
  */
 
 void arm_negate_q7(
-  q7_t * pSrc,
+  const q7_t * pSrc,
   q7_t * pDst,
   uint32_t blockSize)
 {

Source/BasicMathFunctions/arm_offset_f32.c

@@ -62,7 +62,7 @@
 
 
 void arm_offset_f32(
-  float32_t * pSrc,
+  const float32_t * pSrc,
   float32_t offset,
   float32_t * pDst,
   uint32_t blockSize)

Source/BasicMathFunctions/arm_offset_q15.c

@@ -52,7 +52,7 @@
  */
 
 void arm_offset_q15(
-  q15_t * pSrc,
+  const q15_t * pSrc,
   q15_t offset,
   q15_t * pDst,
   uint32_t blockSize)

Source/BasicMathFunctions/arm_offset_q31.c

@@ -52,7 +52,7 @@
  */
 
 void arm_offset_q31(
-  q31_t * pSrc,
+  const q31_t * pSrc,
   q31_t offset,
   q31_t * pDst,
   uint32_t blockSize)

Source/BasicMathFunctions/arm_offset_q7.c

@@ -52,7 +52,7 @@
  */
 
 void arm_offset_q7(
-  q7_t * pSrc,
+  const q7_t * pSrc,
   q7_t offset,
   q7_t * pDst,
   uint32_t blockSize)

Source/BasicMathFunctions/arm_scale_f32.c

@@ -75,7 +75,7 @@
 
 
 void arm_scale_f32(
-  float32_t * pSrc,
+  const float32_t * pSrc,
   float32_t scale,
   float32_t * pDst,
   uint32_t blockSize)

Source/BasicMathFunctions/arm_scale_q15.c

@@ -54,7 +54,7 @@
 
 
 void arm_scale_q15(
-  q15_t * pSrc,
+  const q15_t * pSrc,
   q15_t scaleFract,
   int8_t shift,
   q15_t * pDst,

Source/BasicMathFunctions/arm_scale_q31.c

@@ -53,7 +53,7 @@
  */
 
 void arm_scale_q31(
-  q31_t * pSrc,
+  const q31_t * pSrc,
   q31_t scaleFract,
   int8_t shift,
   q31_t * pDst,

Source/BasicMathFunctions/arm_scale_q7.c

@@ -53,7 +53,7 @@
  */
 
 void arm_scale_q7(
-  q7_t * pSrc,
+  const q7_t * pSrc,
   q7_t scaleFract,
   int8_t shift,
   q7_t * pDst,

Source/BasicMathFunctions/arm_shift_q15.c

@@ -52,7 +52,7 @@
  */
 
 void arm_shift_q15(
-  q15_t * pSrc,
+  const q15_t * pSrc,
   int8_t shiftBits,
   q15_t * pDst,
   uint32_t blockSize)

Source/BasicMathFunctions/arm_shift_q31.c

@@ -70,7 +70,7 @@
  */
 
 void arm_shift_q31(
-  q31_t * pSrc,
+  const q31_t * pSrc,
   int8_t shiftBits,
   q31_t * pDst,
   uint32_t blockSize)

Source/BasicMathFunctions/arm_shift_q7.c

@@ -57,7 +57,7 @@
  */
 
 void arm_shift_q7(
-  q7_t * pSrc,
+  const q7_t * pSrc,
   int8_t shiftBits,
   q7_t * pDst,
   uint32_t blockSize)

Source/BasicMathFunctions/arm_sub_f32.c

@@ -60,8 +60,8 @@
  */
 
 void arm_sub_f32(
-  float32_t * pSrcA,
+  const float32_t * pSrcA,
-  float32_t * pSrcB,
+  const float32_t * pSrcB,
   float32_t * pDst,
   uint32_t blockSize)
 {

Source/BasicMathFunctions/arm_sub_q15.c

@@ -52,8 +52,8 @@
  */
 
 void arm_sub_q15(
-  q15_t * pSrcA,
+  const q15_t * pSrcA,
-  q15_t * pSrcB,
+  const q15_t * pSrcB,
   q15_t * pDst,
   uint32_t blockSize)
 {

Source/BasicMathFunctions/arm_sub_q31.c

@@ -52,8 +52,8 @@
  */
 
 void arm_sub_q31(
-  q31_t * pSrcA,
+  const q31_t * pSrcA,
-  q31_t * pSrcB,
+  const q31_t * pSrcB,
   q31_t * pDst,
   uint32_t blockSize)
 {

Source/BasicMathFunctions/arm_sub_q7.c

@@ -52,8 +52,8 @@
  */
 
 void arm_sub_q7(
-  q7_t * pSrcA,
+  const q7_t * pSrcA,
-  q7_t * pSrcB,
+  const q7_t * pSrcB,
   q7_t * pDst,
   uint32_t blockSize)
 {

Source/ComplexMathFunctions/arm_cmplx_conj_f32.c

@@ -69,7 +69,7 @@
  */
 
 void arm_cmplx_conj_f32(
-  float32_t * pSrc,
+  const float32_t * pSrc,
   float32_t * pDst,
   uint32_t numSamples)
 {

Source/ComplexMathFunctions/arm_cmplx_conj_q15.c

@@ -51,7 +51,7 @@
  */
 
 void arm_cmplx_conj_q15(
-  q15_t * pSrc,
+  const q15_t * pSrc,
   q15_t * pDst,
   uint32_t numSamples)
 {

Source/ComplexMathFunctions/arm_cmplx_conj_q31.c

@@ -51,7 +51,7 @@
  */
 
 void arm_cmplx_conj_q31(
-  q31_t * pSrc,
+  const q31_t * pSrc,
   q31_t * pDst,
   uint32_t numSamples)
 {

Source/ComplexMathFunctions/arm_cmplx_dot_prod_f32.c

@@ -74,8 +74,8 @@
  */
 
 void arm_cmplx_dot_prod_f32(
-  float32_t * pSrcA,
+  const float32_t * pSrcA,
-  float32_t * pSrcB,
+  const float32_t * pSrcB,
   uint32_t numSamples,
   float32_t * realResult,
   float32_t * imagResult)

Source/ComplexMathFunctions/arm_cmplx_dot_prod_q15.c

@@ -56,8 +56,8 @@
  */
 
 void arm_cmplx_dot_prod_q15(
-  q15_t * pSrcA,
+  const q15_t * pSrcA,
-  q15_t * pSrcB,
+  const q15_t * pSrcB,
   uint32_t numSamples,
   q31_t * realResult,
   q31_t * imagResult)

Source/ComplexMathFunctions/arm_cmplx_dot_prod_q31.c

@@ -57,8 +57,8 @@
  */
 
 void arm_cmplx_dot_prod_q31(
-  q31_t * pSrcA,
+  const q31_t * pSrcA,
-  q31_t * pSrcB,
+  const q31_t * pSrcB,
   uint32_t numSamples,
   q63_t * realResult,
   q63_t * imagResult)

Source/ComplexMathFunctions/arm_cmplx_mag_f32.c

@@ -70,7 +70,7 @@
 
 
 void arm_cmplx_mag_f32(
-  float32_t * pSrc,
+  const float32_t * pSrc,
   float32_t * pDst,
   uint32_t numSamples)
 {

Source/ComplexMathFunctions/arm_cmplx_mag_q15.c

@@ -51,7 +51,7 @@
  */
 
 void arm_cmplx_mag_q15(
-  q15_t * pSrc,
+  const q15_t * pSrc,
   q15_t * pDst,
   uint32_t numSamples)
 {

Source/ComplexMathFunctions/arm_cmplx_mag_q31.c

@@ -51,7 +51,7 @@
  */
 
 void arm_cmplx_mag_q31(
-  q31_t * pSrc,
+  const q31_t * pSrc,
   q31_t * pDst,
   uint32_t numSamples)
 {

Source/ComplexMathFunctions/arm_cmplx_mag_squared_f32.c

@@ -71,7 +71,7 @@
  */
 
 void arm_cmplx_mag_squared_f32(
-  float32_t * pSrc,
+  const float32_t * pSrc,
   float32_t * pDst,
   uint32_t numSamples)
 {

Source/ComplexMathFunctions/arm_cmplx_mag_squared_q15.c

@@ -50,7 +50,7 @@
  */
 
 void arm_cmplx_mag_squared_q15(
-  q15_t * pSrc,
+  const q15_t * pSrc,
   q15_t * pDst,
   uint32_t numSamples)
 {

Source/ComplexMathFunctions/arm_cmplx_mag_squared_q31.c

@@ -52,7 +52,7 @@
  */
 
 void arm_cmplx_mag_squared_q31(
-  q31_t * pSrc,
+  const q31_t * pSrc,
   q31_t * pDst,
   uint32_t numSamples)
 {

Source/ComplexMathFunctions/arm_cmplx_mult_cmplx_f32.c

@@ -70,8 +70,8 @@
  */
 
 void arm_cmplx_mult_cmplx_f32(
-  float32_t * pSrcA,
+  const float32_t * pSrcA,
-  float32_t * pSrcB,
+  const float32_t * pSrcB,
   float32_t * pDst,
   uint32_t numSamples)
 {

Source/ComplexMathFunctions/arm_cmplx_mult_cmplx_q15.c

@@ -51,8 +51,8 @@
  */
 
 void arm_cmplx_mult_cmplx_q15(
-  q15_t * pSrcA,
+  const q15_t * pSrcA,
-  q15_t * pSrcB,
+  const q15_t * pSrcB,
   q15_t * pDst,
   uint32_t numSamples)
 {

Source/ComplexMathFunctions/arm_cmplx_mult_cmplx_q31.c

@@ -53,8 +53,8 @@
  */
 
 void arm_cmplx_mult_cmplx_q31(
-  q31_t * pSrcA,
+  const q31_t * pSrcA,
-  q31_t * pSrcB,
+  const q31_t * pSrcB,
   q31_t * pDst,
   uint32_t numSamples)
 {

Source/ComplexMathFunctions/arm_cmplx_mult_real_f32.c

@@ -71,8 +71,8 @@
  */
 
 void arm_cmplx_mult_real_f32(
-  float32_t * pSrcCmplx,
+  const float32_t * pSrcCmplx,
-  float32_t * pSrcReal,
+  const float32_t * pSrcReal,
   float32_t * pCmplxDst,
   uint32_t numSamples)
 {

Source/ComplexMathFunctions/arm_cmplx_mult_real_q15.c

@@ -53,8 +53,8 @@
  */
 
 void arm_cmplx_mult_real_q15(
-  q15_t * pSrcCmplx,
+  const q15_t * pSrcCmplx,
-  q15_t * pSrcReal,
+  const q15_t * pSrcReal,
   q15_t * pCmplxDst,
   uint32_t numSamples)
 {

Source/ComplexMathFunctions/arm_cmplx_mult_real_q31.c

@@ -53,8 +53,8 @@
  */
 
 void arm_cmplx_mult_real_q31(
-  q31_t * pSrcCmplx,
+  const q31_t * pSrcCmplx,
-  q31_t * pSrcReal,
+  const q31_t * pSrcReal,
   q31_t * pCmplxDst,
   uint32_t numSamples)
 {

Source/FilteringFunctions/arm_biquad_cascade_df1_32x64_init_q31.c

@@ -73,7 +73,7 @@
 void arm_biquad_cas_df1_32x64_init_q31(
   arm_biquad_cas_df1_32x64_ins_q31 * S,
   uint8_t numStages,
-  q31_t * pCoeffs,
+  const q31_t * pCoeffs,
   q63_t * pState,
   uint8_t postShift)
 {

Source/FilteringFunctions/arm_biquad_cascade_df1_32x64_q31.c

@@ -174,14 +174,14 @@
 
 void arm_biquad_cas_df1_32x64_q31(
   const arm_biquad_cas_df1_32x64_ins_q31 * S,
-  q31_t * pSrc,
+  const q31_t * pSrc,
   q31_t * pDst,
   uint32_t blockSize)
 {
-  q31_t *pIn = pSrc;                             /*  input pointer initialization  */
+  const q31_t *pIn = pSrc;                       /*  input pointer initialization  */
   q31_t *pOut = pDst;                            /*  output pointer initialization */
   q63_t *pState = S->pState;                     /*  state pointer initialization  */
-  q31_t *pCoeffs = S->pCoeffs;                   /*  coeff pointer initialization  */
+  const q31_t *pCoeffs = S->pCoeffs;             /*  coeff pointer initialization  */
   q63_t acc;                                     /*  accumulator                   */
   q31_t Xn1, Xn2;                                /*  Input Filter state variables        */
   q63_t Yn1, Yn2;                                /*  Output Filter state variables        */

Source/FilteringFunctions/arm_biquad_cascade_df1_f32.c

@@ -164,14 +164,14 @@
 
 void arm_biquad_cascade_df1_f32(
   const arm_biquad_casd_df1_inst_f32 * S,
-  float32_t * pSrc,
+  const float32_t * pSrc,
   float32_t * pDst,
   uint32_t blockSize)
 {
-  float32_t *pIn = pSrc;                         /*  source pointer            */
+  const float32_t *pIn = pSrc;                   /*  source pointer            */
   float32_t *pOut = pDst;                        /*  destination pointer       */
   float32_t *pState = S->pState;                 /*  pState pointer            */
-  float32_t *pCoeffs = S->pCoeffs;               /*  coefficient pointer       */
+  const float32_t *pCoeffs = S->pCoeffs;         /*  coefficient pointer       */
   float32_t acc;                                 /*  Simulates the accumulator */
   float32_t b0, b1, b2, a1, a2;                  /*  Filter coefficients       */
   float32_t Xn1, Xn2, Yn1, Yn2;                  /*  Filter pState variables   */

Source/FilteringFunctions/arm_biquad_cascade_df1_fast_q15.c

@@ -61,11 +61,11 @@
 
 void arm_biquad_cascade_df1_fast_q15(
   const arm_biquad_casd_df1_inst_q15 * S,
-  q15_t * pSrc,
+  const q15_t * pSrc,
   q15_t * pDst,
   uint32_t blockSize)
 {
-  q15_t *pIn = pSrc;                             /*  Source pointer                               */
+  const q15_t *pIn = pSrc;                       /*  Source pointer                               */
   q15_t *pOut = pDst;                            /*  Destination pointer                          */
   q31_t in;                                      /*  Temporary variable to hold input value       */
   q31_t out;                                     /*  Temporary variable to hold output value      */
@@ -75,7 +75,7 @@ void arm_biquad_cascade_df1_fast_q15(
   q31_t acc;                                     /*  Accumulator                                  */
   int32_t shift = (int32_t) (15 - S->postShift); /*  Post shift                                   */
   q15_t *pState = S->pState;                     /*  State pointer                                */
-  q15_t *pCoeffs = S->pCoeffs;                   /*  Coefficient pointer                          */
+  const q15_t *pCoeffs = S->pCoeffs;                   /*  Coefficient pointer                          */
   uint32_t sample, stage = S->numStages;         /*  Stage loop counter                           */
 
 

Source/FilteringFunctions/arm_biquad_cascade_df1_fast_q31.c

@@ -63,17 +63,17 @@
 
 void arm_biquad_cascade_df1_fast_q31(
   const arm_biquad_casd_df1_inst_q31 * S,
-  q31_t * pSrc,
+  const q31_t * pSrc,
   q31_t * pDst,
   uint32_t blockSize)
 {
   q31_t acc = 0;                                 /*  accumulator                   */
   q31_t Xn1, Xn2, Yn1, Yn2;                      /*  Filter state variables        */
   q31_t b0, b1, b2, a1, a2;                      /*  Filter coefficients           */
-  q31_t *pIn = pSrc;                             /*  input pointer initialization  */
+  const q31_t *pIn = pSrc;                       /*  input pointer initialization  */
   q31_t *pOut = pDst;                            /*  output pointer initialization */
   q31_t *pState = S->pState;                     /*  pState pointer initialization */
-  q31_t *pCoeffs = S->pCoeffs;                   /*  coeff pointer initialization  */
+  const q31_t *pCoeffs = S->pCoeffs;                   /*  coeff pointer initialization  */
   q31_t Xn;                                      /*  temporary input               */
   int32_t shift = (int32_t) S->postShift + 1;    /*  Shift to be applied to the output */
   uint32_t sample, stage = S->numStages;         /*  loop counters                     */

Source/FilteringFunctions/arm_biquad_cascade_df1_init_f32.c

@@ -76,7 +76,7 @@
 void arm_biquad_cascade_df1_init_f32(
   arm_biquad_casd_df1_inst_f32 * S,
   uint8_t numStages,
-  float32_t * pCoeffs,
+  const float32_t * pCoeffs,
   float32_t * pState)
 {
   /* Assign filter stages */

Source/FilteringFunctions/arm_biquad_cascade_df1_init_q15.c

@@ -74,7 +74,7 @@
 void arm_biquad_cascade_df1_init_q15(
   arm_biquad_casd_df1_inst_q15 * S,
   uint8_t numStages,
-  q15_t * pCoeffs,
+  const q15_t * pCoeffs,
   q15_t * pState,
   int8_t postShift)
 {

Source/FilteringFunctions/arm_biquad_cascade_df1_init_q31.c

@@ -73,7 +73,7 @@
 void arm_biquad_cascade_df1_init_q31(
   arm_biquad_casd_df1_inst_q31 * S,
   uint8_t numStages,
-  q31_t * pCoeffs,
+  const q31_t * pCoeffs,
   q31_t * pState,
   int8_t postShift)
 {

Source/FilteringFunctions/arm_biquad_cascade_df1_q15.c

@@ -61,7 +61,7 @@
 
 void arm_biquad_cascade_df1_q15(
   const arm_biquad_casd_df1_inst_q15 * S,
-  q15_t * pSrc,
+  const q15_t * pSrc,
   q15_t * pDst,
   uint32_t blockSize)
 {
@@ -71,7 +71,7 @@ void arm_biquad_cascade_df1_q15(
 
   /* Run the below code for Cortex-M4 and Cortex-M3 */
 
-  q15_t *pIn = pSrc;                             /*  Source pointer                               */
+  const q15_t *pIn = pSrc;                             /*  Source pointer                               */
   q15_t *pOut = pDst;                            /*  Destination pointer                          */
   q31_t in;                                      /*  Temporary variable to hold input value       */
   q31_t out;                                     /*  Temporary variable to hold output value      */
@@ -82,7 +82,7 @@ void arm_biquad_cascade_df1_q15(
   q63_t acc;                                     /*  Accumulator                                  */
   int32_t lShift = (15 - (int32_t) S->postShift);       /*  Post shift                                   */
   q15_t *pState = S->pState;                     /*  State pointer                                */
-  q15_t *pCoeffs = S->pCoeffs;                   /*  Coefficient pointer                          */
+  const q15_t *pCoeffs = S->pCoeffs;                   /*  Coefficient pointer                          */
   uint32_t sample, stage = (uint32_t) S->numStages;     /*  Stage loop counter                           */
   int32_t uShift = (32 - lShift);
 
@@ -309,7 +309,7 @@ void arm_biquad_cascade_df1_q15(
   q63_t acc;                                     /*  Accumulator                                  */
   int32_t shift = (15 - (int32_t) S->postShift); /*  Post shift                                   */
   q15_t *pState = S->pState;                     /*  State pointer                                */
-  q15_t *pCoeffs = S->pCoeffs;                   /*  Coefficient pointer                          */
+  const q15_t *pCoeffs = S->pCoeffs;                   /*  Coefficient pointer                          */
   uint32_t sample, stage = (uint32_t) S->numStages;     /*  Stage loop counter                           */
 
   do

Source/FilteringFunctions/arm_biquad_cascade_df1_q31.c

@@ -60,17 +60,17 @@
 
 void arm_biquad_cascade_df1_q31(
   const arm_biquad_casd_df1_inst_q31 * S,
-  q31_t * pSrc,
+  const q31_t * pSrc,
   q31_t * pDst,
   uint32_t blockSize)
 {
   q63_t acc;                                     /*  accumulator                   */
   uint32_t uShift = ((uint32_t) S->postShift + 1U);
   uint32_t lShift = 32U - uShift;                /*  Shift to be applied to the output */
-  q31_t *pIn = pSrc;                             /*  input pointer initialization  */
+  const q31_t *pIn = pSrc;                       /*  input pointer initialization  */
   q31_t *pOut = pDst;                            /*  output pointer initialization */
   q31_t *pState = S->pState;                     /*  pState pointer initialization */
-  q31_t *pCoeffs = S->pCoeffs;                   /*  coeff pointer initialization  */
+  const q31_t *pCoeffs = S->pCoeffs;                   /*  coeff pointer initialization  */
   q31_t Xn1, Xn2, Yn1, Yn2;                      /*  Filter state variables        */
   q31_t b0, b1, b2, a1, a2;                      /*  Filter coefficients           */
   q31_t Xn;                                      /*  temporary input               */

Source/FilteringFunctions/arm_biquad_cascade_df2T_f32.c

@@ -141,15 +141,15 @@
 LOW_OPTIMIZATION_ENTER
 void arm_biquad_cascade_df2T_f32(
 const arm_biquad_cascade_df2T_instance_f32 * S,
-float32_t * pSrc,
+const float32_t * pSrc,
 float32_t * pDst,
 uint32_t blockSize)
 {
 
-   float32_t *pIn = pSrc;                         /*  source pointer            */
+   const float32_t *pIn = pSrc;                   /*  source pointer            */
    float32_t *pOut = pDst;                        /*  destination pointer       */
    float32_t *pState = S->pState;                 /*  State pointer             */
-   float32_t *pCoeffs = S->pCoeffs;               /*  coefficient pointer       */
+   const float32_t *pCoeffs = S->pCoeffs;         /*  coefficient pointer       */
    float32_t acc1;                                /*  accumulator               */
    float32_t b0, b1, b2, a1, a2;                  /*  Filter coefficients       */
    float32_t Xn1;                                 /*  temporary input           */