From 7bdf27d4e4b73afea8f8ba589516867ce2e47151 Mon Sep 17 00:00:00 2001
From: charansai612 <charansai612@gmail.com>
Date: Thu, 5 Jan 2023 10:51:50 +0530
Subject: [PATCH] pState: use pState from argument

pState is set to zeros internally even when pState is a non zero array
---
 .../arm_biquad_cascade_df1_32x64_init_q31.c                | 3 ---
 .../FilteringFunctions/arm_biquad_cascade_df1_init_f16.c   | 3 ---
 .../FilteringFunctions/arm_biquad_cascade_df1_init_f32.c   | 3 ---
 .../FilteringFunctions/arm_biquad_cascade_df1_init_q15.c   | 3 ---
 .../FilteringFunctions/arm_biquad_cascade_df1_init_q31.c   | 3 ---
 .../FilteringFunctions/arm_biquad_cascade_df2T_init_f16.c  | 3 ---
 .../FilteringFunctions/arm_biquad_cascade_df2T_init_f32.c  | 3 ---
 .../FilteringFunctions/arm_biquad_cascade_df2T_init_f64.c  | 5 +----
 .../arm_biquad_cascade_stereo_df2T_init_f16.c              | 3 ---
 .../arm_biquad_cascade_stereo_df2T_init_f32.c              | 3 ---
 Source/FilteringFunctions/arm_fir_decimate_init_f32.c      | 3 ---
 Source/FilteringFunctions/arm_fir_decimate_init_q15.c      | 3 ---
 Source/FilteringFunctions/arm_fir_decimate_init_q31.c      | 3 ---
 Source/FilteringFunctions/arm_fir_init_f16.c               | 7 -------
 Source/FilteringFunctions/arm_fir_init_f32.c               | 6 ------
 Source/FilteringFunctions/arm_fir_init_f64.c               | 2 --
 Source/FilteringFunctions/arm_fir_init_q15.c               | 3 ---
 Source/FilteringFunctions/arm_fir_init_q31.c               | 7 -------
 Source/FilteringFunctions/arm_fir_init_q7.c                | 3 ---
 Source/FilteringFunctions/arm_fir_interpolate_init_f32.c   | 3 ---
 Source/FilteringFunctions/arm_fir_interpolate_init_q15.c   | 3 ---
 Source/FilteringFunctions/arm_fir_interpolate_init_q31.c   | 3 ---
 Source/FilteringFunctions/arm_fir_lattice_init_f32.c       | 3 ---
 Source/FilteringFunctions/arm_fir_lattice_init_q15.c       | 3 ---
 Source/FilteringFunctions/arm_fir_lattice_init_q31.c       | 3 ---
 Source/FilteringFunctions/arm_fir_sparse_init_f32.c        | 3 ---
 Source/FilteringFunctions/arm_fir_sparse_init_q15.c        | 3 ---
 Source/FilteringFunctions/arm_fir_sparse_init_q31.c        | 3 ---
 Source/FilteringFunctions/arm_fir_sparse_init_q7.c         | 3 ---
 Source/FilteringFunctions/arm_iir_lattice_init_f32.c       | 3 ---
 Source/FilteringFunctions/arm_iir_lattice_init_q15.c       | 3 ---
 Source/FilteringFunctions/arm_iir_lattice_init_q31.c       | 3 ---
 Source/FilteringFunctions/arm_lms_init_f32.c               | 3 ---
 Source/FilteringFunctions/arm_lms_init_q15.c               | 3 ---
 Source/FilteringFunctions/arm_lms_init_q31.c               | 3 ---
 Source/FilteringFunctions/arm_lms_norm_init_f32.c          | 3 ---
 Source/FilteringFunctions/arm_lms_norm_init_q15.c          | 3 ---
 Source/FilteringFunctions/arm_lms_norm_init_q31.c          | 3 ---
 38 files changed, 1 insertion(+), 125 deletions(-)

diff --git a/Source/FilteringFunctions/arm_biquad_cascade_df1_32x64_init_q31.c b/Source/FilteringFunctions/arm_biquad_cascade_df1_32x64_init_q31.c
index 565b494b..f77b5fe3 100644
--- a/Source/FilteringFunctions/arm_biquad_cascade_df1_32x64_init_q31.c
+++ b/Source/FilteringFunctions/arm_biquad_cascade_df1_32x64_init_q31.c
@@ -82,9 +82,6 @@ void arm_biquad_cas_df1_32x64_init_q31(
   /* Assign coefficient pointer */
   S->pCoeffs = pCoeffs;
 
-  /* Clear state buffer and size is always 4 * numStages */
-  memset(pState, 0, (4U * (uint32_t) numStages) * sizeof(q63_t));
-
   /* Assign state pointer */
   S->pState = pState;
 }
diff --git a/Source/FilteringFunctions/arm_biquad_cascade_df1_init_f16.c b/Source/FilteringFunctions/arm_biquad_cascade_df1_init_f16.c
index d18dd3ea..d00de77e 100755
--- a/Source/FilteringFunctions/arm_biquad_cascade_df1_init_f16.c
+++ b/Source/FilteringFunctions/arm_biquad_cascade_df1_init_f16.c
@@ -87,9 +87,6 @@ void arm_biquad_cascade_df1_init_f16(
   /* Assign coefficient pointer */
   S->pCoeffs = pCoeffs;
 
-  /* Clear state buffer and size is always 4 * numStages */
-  memset(pState, 0, (4U * (uint32_t) numStages) * sizeof(float16_t));
-
   /* Assign state pointer */
   S->pState = pState;
 }
diff --git a/Source/FilteringFunctions/arm_biquad_cascade_df1_init_f32.c b/Source/FilteringFunctions/arm_biquad_cascade_df1_init_f32.c
index 1614594b..78f7414b 100644
--- a/Source/FilteringFunctions/arm_biquad_cascade_df1_init_f32.c
+++ b/Source/FilteringFunctions/arm_biquad_cascade_df1_init_f32.c
@@ -86,9 +86,6 @@ void arm_biquad_cascade_df1_init_f32(
   /* Assign coefficient pointer */
   S->pCoeffs = pCoeffs;
 
-  /* Clear state buffer and size is always 4 * numStages */
-  memset(pState, 0, (4U * (uint32_t) numStages) * sizeof(float32_t));
-
   /* Assign state pointer */
   S->pState = pState;
 }
diff --git a/Source/FilteringFunctions/arm_biquad_cascade_df1_init_q15.c b/Source/FilteringFunctions/arm_biquad_cascade_df1_init_q15.c
index 0fa38255..e5664cf7 100644
--- a/Source/FilteringFunctions/arm_biquad_cascade_df1_init_q15.c
+++ b/Source/FilteringFunctions/arm_biquad_cascade_df1_init_q15.c
@@ -84,9 +84,6 @@ void arm_biquad_cascade_df1_init_q15(
   /* Assign coefficient pointer */
   S->pCoeffs = pCoeffs;
 
-  /* Clear state buffer and size is always 4 * numStages */
-  memset(pState, 0, (4U * (uint32_t) numStages) * sizeof(q15_t));
-
   /* Assign state pointer */
   S->pState = pState;
 }
diff --git a/Source/FilteringFunctions/arm_biquad_cascade_df1_init_q31.c b/Source/FilteringFunctions/arm_biquad_cascade_df1_init_q31.c
index 2b3cb628..b62b2e11 100644
--- a/Source/FilteringFunctions/arm_biquad_cascade_df1_init_q31.c
+++ b/Source/FilteringFunctions/arm_biquad_cascade_df1_init_q31.c
@@ -83,9 +83,6 @@ void arm_biquad_cascade_df1_init_q31(
   /* Assign coefficient pointer */
   S->pCoeffs = pCoeffs;
 
-  /* Clear state buffer and size is always 4 * numStages */
-  memset(pState, 0, (4U * (uint32_t) numStages) * sizeof(q31_t));
-
   /* Assign state pointer */
   S->pState = pState;
 }
diff --git a/Source/FilteringFunctions/arm_biquad_cascade_df2T_init_f16.c b/Source/FilteringFunctions/arm_biquad_cascade_df2T_init_f16.c
index 3f619e56..e222de9c 100755
--- a/Source/FilteringFunctions/arm_biquad_cascade_df2T_init_f16.c
+++ b/Source/FilteringFunctions/arm_biquad_cascade_df2T_init_f16.c
@@ -100,9 +100,6 @@ void arm_biquad_cascade_df2T_init_f16(
   /* Assign coefficient pointer */
   S->pCoeffs = pCoeffs;
 
-  /* Clear state buffer and size is always 2 * numStages */
-  memset(pState, 0, (2U * (uint32_t) numStages) * sizeof(float16_t));
-
   /* Assign state pointer */
   S->pState = pState;
 }
diff --git a/Source/FilteringFunctions/arm_biquad_cascade_df2T_init_f32.c b/Source/FilteringFunctions/arm_biquad_cascade_df2T_init_f32.c
index e3b350c3..3bc92773 100644
--- a/Source/FilteringFunctions/arm_biquad_cascade_df2T_init_f32.c
+++ b/Source/FilteringFunctions/arm_biquad_cascade_df2T_init_f32.c
@@ -202,9 +202,6 @@ void arm_biquad_cascade_df2T_init_f32(
   /* Assign coefficient pointer */
   S->pCoeffs = pCoeffs;
 
-  /* Clear state buffer and size is always 2 * numStages */
-  memset(pState, 0, (2U * (uint32_t) numStages) * sizeof(float32_t));
-
   /* Assign state pointer */
   S->pState = pState;
 }
diff --git a/Source/FilteringFunctions/arm_biquad_cascade_df2T_init_f64.c b/Source/FilteringFunctions/arm_biquad_cascade_df2T_init_f64.c
index 111f4e7e..24a2d0f1 100644
--- a/Source/FilteringFunctions/arm_biquad_cascade_df2T_init_f64.c
+++ b/Source/FilteringFunctions/arm_biquad_cascade_df2T_init_f64.c
@@ -73,10 +73,7 @@ void arm_biquad_cascade_df2T_init_f64(
     
     /* Assign coefficient pointer */
     S->pCoeffs = pCoeffs;
-    
-    /* Clear state buffer and size is always 2 * numStages */
-    memset(pState, 0, (2U * (uint32_t) numStages) * sizeof(float64_t));
-    
+        
     /* Assign state pointer */
     S->pState = pState;
 }
diff --git a/Source/FilteringFunctions/arm_biquad_cascade_stereo_df2T_init_f16.c b/Source/FilteringFunctions/arm_biquad_cascade_stereo_df2T_init_f16.c
index 633fbfef..d0d706ea 100755
--- a/Source/FilteringFunctions/arm_biquad_cascade_stereo_df2T_init_f16.c
+++ b/Source/FilteringFunctions/arm_biquad_cascade_stereo_df2T_init_f16.c
@@ -76,9 +76,6 @@ void arm_biquad_cascade_stereo_df2T_init_f16(
   /* Assign coefficient pointer */
   S->pCoeffs = pCoeffs;
 
-  /* Clear state buffer and size is always 4 * numStages */
-  memset(pState, 0, (4U * (uint32_t) numStages) * sizeof(float16_t));
-
   /* Assign state pointer */
   S->pState = pState;
 }
diff --git a/Source/FilteringFunctions/arm_biquad_cascade_stereo_df2T_init_f32.c b/Source/FilteringFunctions/arm_biquad_cascade_stereo_df2T_init_f32.c
index 6932b9a4..e8d9e88f 100644
--- a/Source/FilteringFunctions/arm_biquad_cascade_stereo_df2T_init_f32.c
+++ b/Source/FilteringFunctions/arm_biquad_cascade_stereo_df2T_init_f32.c
@@ -74,9 +74,6 @@ void arm_biquad_cascade_stereo_df2T_init_f32(
   /* Assign coefficient pointer */
   S->pCoeffs = pCoeffs;
 
-  /* Clear state buffer and size is always 4 * numStages */
-  memset(pState, 0, (4U * (uint32_t) numStages) * sizeof(float32_t));
-
   /* Assign state pointer */
   S->pState = pState;
 }
diff --git a/Source/FilteringFunctions/arm_fir_decimate_init_f32.c b/Source/FilteringFunctions/arm_fir_decimate_init_f32.c
index de31b9f4..75548531 100644
--- a/Source/FilteringFunctions/arm_fir_decimate_init_f32.c
+++ b/Source/FilteringFunctions/arm_fir_decimate_init_f32.c
@@ -84,9 +84,6 @@ arm_status arm_fir_decimate_init_f32(
     /* Assign coefficient pointer */
     S->pCoeffs = pCoeffs;
 
-    /* Clear the state buffer. The size is always (blockSize + numTaps - 1) */
-    memset(pState, 0, (numTaps + (blockSize - 1U)) * sizeof(float32_t));
-
     /* Assign state pointer */
     S->pState = pState;
 
diff --git a/Source/FilteringFunctions/arm_fir_decimate_init_q15.c b/Source/FilteringFunctions/arm_fir_decimate_init_q15.c
index b43df2a0..a8b9b6da 100644
--- a/Source/FilteringFunctions/arm_fir_decimate_init_q15.c
+++ b/Source/FilteringFunctions/arm_fir_decimate_init_q15.c
@@ -85,9 +85,6 @@ arm_status arm_fir_decimate_init_q15(
     /* Assign coefficient pointer */
     S->pCoeffs = pCoeffs;
 
-    /* Clear the state buffer. The size is always (blockSize + numTaps - 1) */
-    memset(pState, 0, (numTaps + (blockSize - 1U)) * sizeof(q15_t));
-
     /* Assign state pointer */
     S->pState = pState;
 
diff --git a/Source/FilteringFunctions/arm_fir_decimate_init_q31.c b/Source/FilteringFunctions/arm_fir_decimate_init_q31.c
index 7a9490a3..93e6032a 100644
--- a/Source/FilteringFunctions/arm_fir_decimate_init_q31.c
+++ b/Source/FilteringFunctions/arm_fir_decimate_init_q31.c
@@ -84,9 +84,6 @@ arm_status arm_fir_decimate_init_q31(
     /* Assign coefficient pointer */
     S->pCoeffs = pCoeffs;
 
-    /* Clear the state buffer. The size is always (blockSize + numTaps - 1) */
-    memset(pState, 0, (numTaps + (blockSize - 1U)) * sizeof(q31_t));
-
     /* Assign state pointer */
     S->pState = pState;
 
diff --git a/Source/FilteringFunctions/arm_fir_init_f16.c b/Source/FilteringFunctions/arm_fir_init_f16.c
index 34913432..39ab62e7 100755
--- a/Source/FilteringFunctions/arm_fir_init_f16.c
+++ b/Source/FilteringFunctions/arm_fir_init_f16.c
@@ -87,13 +87,6 @@ void arm_fir_init_f16(
   /* Assign coefficient pointer */
   S->pCoeffs = pCoeffs;
 
-  /* Clear state buffer. The size is always (blockSize + numTaps - 1) */
-#if defined(ARM_MATH_MVE_FLOAT16) && !defined(ARM_MATH_AUTOVECTORIZE)
-  memset(pState, 0, (numTaps + (blockSize - 1U) + ROUND_UP(blockSize, 8)) * sizeof(float16_t));
-#else
-  memset(pState, 0, (numTaps + (blockSize - 1U)) * sizeof(float16_t));
-#endif 
-
   /* Assign state pointer */
   S->pState = pState;
 }
diff --git a/Source/FilteringFunctions/arm_fir_init_f32.c b/Source/FilteringFunctions/arm_fir_init_f32.c
index e0a58755..c713fd08 100644
--- a/Source/FilteringFunctions/arm_fir_init_f32.c
+++ b/Source/FilteringFunctions/arm_fir_init_f32.c
@@ -84,12 +84,6 @@ void arm_fir_init_f32(
   /* Assign coefficient pointer */
   S->pCoeffs = pCoeffs;
 
-  /* Clear state buffer. The size is always (blockSize + numTaps - 1) */
-#if defined(ARM_MATH_MVEF) && !defined(ARM_MATH_AUTOVECTORIZE)
-  memset(pState, 0, (numTaps + (blockSize - 1U) + blockSize) * sizeof(float32_t));
-#else
-  memset(pState, 0, (numTaps + (blockSize - 1U)) * sizeof(float32_t));
-#endif
   /* Assign state pointer */
   S->pState = pState;
 }
diff --git a/Source/FilteringFunctions/arm_fir_init_f64.c b/Source/FilteringFunctions/arm_fir_init_f64.c
index fe616dea..5f0c0b81 100644
--- a/Source/FilteringFunctions/arm_fir_init_f64.c
+++ b/Source/FilteringFunctions/arm_fir_init_f64.c
@@ -73,8 +73,6 @@ void arm_fir_init_f64(
     /* Assign coefficient pointer */
     S->pCoeffs = pCoeffs;
     
-    /* Clear state buffer. The size is always (blockSize + numTaps - 1) */
-    memset(pState, 0, (numTaps + (blockSize - 1U)) * sizeof(float64_t));
     /* Assign state pointer */
     S->pState = pState;
 }
diff --git a/Source/FilteringFunctions/arm_fir_init_q15.c b/Source/FilteringFunctions/arm_fir_init_q15.c
index 3682fb09..8be8cb03 100644
--- a/Source/FilteringFunctions/arm_fir_init_q15.c
+++ b/Source/FilteringFunctions/arm_fir_init_q15.c
@@ -107,9 +107,6 @@ arm_status arm_fir_init_q15(
     /* Assign coefficient pointer */
     S->pCoeffs = pCoeffs;
 
-    /* Clear the state buffer.  The size is always (blockSize + numTaps ) */
-    memset(pState, 0, (numTaps + (blockSize)) * sizeof(q15_t));
-
     /* Assign state pointer */
     S->pState = pState;
 
diff --git a/Source/FilteringFunctions/arm_fir_init_q31.c b/Source/FilteringFunctions/arm_fir_init_q31.c
index 96d1fdde..ce3a82c6 100644
--- a/Source/FilteringFunctions/arm_fir_init_q31.c
+++ b/Source/FilteringFunctions/arm_fir_init_q31.c
@@ -84,13 +84,6 @@ void arm_fir_init_q31(
   /* Assign coefficient pointer */
   S->pCoeffs = pCoeffs;
 
-  /* Clear state buffer. The size is always (blockSize + numTaps - 1) */
-  #if defined(ARM_MATH_MVEI) && !defined(ARM_MATH_AUTOVECTORIZE)
-  memset(pState, 0, (numTaps + (blockSize - 1U) + 2*ROUND_UP(blockSize, 4)) * sizeof(q31_t));
-  #else
-  memset(pState, 0, (numTaps + (blockSize - 1U)) * sizeof(q31_t));
-  #endif
-
   /* Assign state pointer */
   S->pState = pState;
 }
diff --git a/Source/FilteringFunctions/arm_fir_init_q7.c b/Source/FilteringFunctions/arm_fir_init_q7.c
index 1ad05a55..cc2666ae 100644
--- a/Source/FilteringFunctions/arm_fir_init_q7.c
+++ b/Source/FilteringFunctions/arm_fir_init_q7.c
@@ -78,9 +78,6 @@ void arm_fir_init_q7(
   /* Assign coefficient pointer */
   S->pCoeffs = pCoeffs;
 
-  /* Clear state buffer. The size is always (blockSize + numTaps - 1) */
-  memset(pState, 0, (numTaps + (blockSize - 1U)) * sizeof(q7_t));
-
   /* Assign state pointer */
   S->pState = pState;
 }
diff --git a/Source/FilteringFunctions/arm_fir_interpolate_init_f32.c b/Source/FilteringFunctions/arm_fir_interpolate_init_f32.c
index 67bdff9c..35871ebb 100644
--- a/Source/FilteringFunctions/arm_fir_interpolate_init_f32.c
+++ b/Source/FilteringFunctions/arm_fir_interpolate_init_f32.c
@@ -89,9 +89,6 @@ arm_status arm_fir_interpolate_init_f32(
     /* Assign polyPhaseLength */
     S->phaseLength = numTaps / L;
 
-    /* Clear state buffer and size of buffer is always phaseLength + blockSize - 1 */
-    memset(pState, 0, (blockSize + ((uint32_t) S->phaseLength - 1U)) * sizeof(float32_t));
-
     /* Assign state pointer */
     S->pState = pState;
 
diff --git a/Source/FilteringFunctions/arm_fir_interpolate_init_q15.c b/Source/FilteringFunctions/arm_fir_interpolate_init_q15.c
index 7436aa43..c5a71428 100644
--- a/Source/FilteringFunctions/arm_fir_interpolate_init_q15.c
+++ b/Source/FilteringFunctions/arm_fir_interpolate_init_q15.c
@@ -89,9 +89,6 @@ arm_status arm_fir_interpolate_init_q15(
     /* Assign polyPhaseLength */
     S->phaseLength = numTaps / L;
 
-    /* Clear state buffer and size of buffer is always phaseLength + blockSize - 1 */
-    memset(pState, 0, (blockSize + ((uint32_t) S->phaseLength - 1U)) * sizeof(q15_t));
-
     /* Assign state pointer */
     S->pState = pState;
 
diff --git a/Source/FilteringFunctions/arm_fir_interpolate_init_q31.c b/Source/FilteringFunctions/arm_fir_interpolate_init_q31.c
index 15f9e0d3..ee8b4490 100644
--- a/Source/FilteringFunctions/arm_fir_interpolate_init_q31.c
+++ b/Source/FilteringFunctions/arm_fir_interpolate_init_q31.c
@@ -88,9 +88,6 @@ arm_status arm_fir_interpolate_init_q31(
     /* Assign polyPhaseLength */
     S->phaseLength = numTaps / L;
 
-    /* Clear state buffer and size of buffer is always phaseLength + blockSize - 1 */
-    memset(pState, 0, (blockSize + ((uint32_t) S->phaseLength - 1U)) * sizeof(q31_t));
-
     /* Assign state pointer */
     S->pState = pState;
 
diff --git a/Source/FilteringFunctions/arm_fir_lattice_init_f32.c b/Source/FilteringFunctions/arm_fir_lattice_init_f32.c
index a3a0c224..2cddb775 100644
--- a/Source/FilteringFunctions/arm_fir_lattice_init_f32.c
+++ b/Source/FilteringFunctions/arm_fir_lattice_init_f32.c
@@ -58,9 +58,6 @@ void arm_fir_lattice_init_f32(
   /* Assign coefficient pointer */
   S->pCoeffs = pCoeffs;
 
-  /* Clear state buffer and size is always numStages */
-  memset(pState, 0, (numStages) * sizeof(float32_t));
-
   /* Assign state pointer */
   S->pState = pState;
 }
diff --git a/Source/FilteringFunctions/arm_fir_lattice_init_q15.c b/Source/FilteringFunctions/arm_fir_lattice_init_q15.c
index 3996d484..27138c02 100644
--- a/Source/FilteringFunctions/arm_fir_lattice_init_q15.c
+++ b/Source/FilteringFunctions/arm_fir_lattice_init_q15.c
@@ -58,9 +58,6 @@ void arm_fir_lattice_init_q15(
   /* Assign coefficient pointer */
   S->pCoeffs = pCoeffs;
 
-  /* Clear state buffer and size is always numStages */
-  memset(pState, 0, (numStages) * sizeof(q15_t));
-
   /* Assign state pointer */
   S->pState = pState;
 }
diff --git a/Source/FilteringFunctions/arm_fir_lattice_init_q31.c b/Source/FilteringFunctions/arm_fir_lattice_init_q31.c
index 4a91b590..54d678b5 100644
--- a/Source/FilteringFunctions/arm_fir_lattice_init_q31.c
+++ b/Source/FilteringFunctions/arm_fir_lattice_init_q31.c
@@ -58,9 +58,6 @@ void arm_fir_lattice_init_q31(
   /* Assign coefficient pointer */
   S->pCoeffs = pCoeffs;
 
-  /* Clear state buffer and size is always numStages */
-  memset(pState, 0, (numStages) * sizeof(q31_t));
-
   /* Assign state pointer */
   S->pState = pState;
 }
diff --git a/Source/FilteringFunctions/arm_fir_sparse_init_f32.c b/Source/FilteringFunctions/arm_fir_sparse_init_f32.c
index dce0d6f7..f6ab9ace 100644
--- a/Source/FilteringFunctions/arm_fir_sparse_init_f32.c
+++ b/Source/FilteringFunctions/arm_fir_sparse_init_f32.c
@@ -81,9 +81,6 @@ void arm_fir_sparse_init_f32(
   /* reset the stateIndex to 0 */
   S->stateIndex = 0U;
 
-  /* Clear state buffer and size is always maxDelay + blockSize */
-  memset(pState, 0, (maxDelay + blockSize) * sizeof(float32_t));
-
   /* Assign state pointer */
   S->pState = pState;
 }
diff --git a/Source/FilteringFunctions/arm_fir_sparse_init_q15.c b/Source/FilteringFunctions/arm_fir_sparse_init_q15.c
index 6a48743e..f72929fc 100644
--- a/Source/FilteringFunctions/arm_fir_sparse_init_q15.c
+++ b/Source/FilteringFunctions/arm_fir_sparse_init_q15.c
@@ -81,9 +81,6 @@ void arm_fir_sparse_init_q15(
   /* reset the stateIndex to 0 */
   S->stateIndex = 0U;
 
-  /* Clear state buffer and size is always maxDelay + blockSize */
-  memset(pState, 0, (maxDelay + blockSize) * sizeof(q15_t));
-
   /* Assign state pointer */
   S->pState = pState;
 }
diff --git a/Source/FilteringFunctions/arm_fir_sparse_init_q31.c b/Source/FilteringFunctions/arm_fir_sparse_init_q31.c
index a333f1cc..ddfaee15 100644
--- a/Source/FilteringFunctions/arm_fir_sparse_init_q31.c
+++ b/Source/FilteringFunctions/arm_fir_sparse_init_q31.c
@@ -80,9 +80,6 @@ void arm_fir_sparse_init_q31(
   /* reset the stateIndex to 0 */
   S->stateIndex = 0U;
 
-  /* Clear state buffer and size is always maxDelay + blockSize */
-  memset(pState, 0, (maxDelay + blockSize) * sizeof(q31_t));
-
   /* Assign state pointer */
   S->pState = pState;
 }
diff --git a/Source/FilteringFunctions/arm_fir_sparse_init_q7.c b/Source/FilteringFunctions/arm_fir_sparse_init_q7.c
index 3e2b9c9a..528c95e3 100644
--- a/Source/FilteringFunctions/arm_fir_sparse_init_q7.c
+++ b/Source/FilteringFunctions/arm_fir_sparse_init_q7.c
@@ -81,9 +81,6 @@ void arm_fir_sparse_init_q7(
   /* reset the stateIndex to 0 */
   S->stateIndex = 0U;
 
-  /* Clear state buffer and size is always maxDelay + blockSize */
-  memset(pState, 0, (maxDelay + blockSize) * sizeof(q7_t));
-
   /* Assign state pointer */
   S->pState = pState;
 }
diff --git a/Source/FilteringFunctions/arm_iir_lattice_init_f32.c b/Source/FilteringFunctions/arm_iir_lattice_init_f32.c
index 389e1ea8..0dde41d4 100644
--- a/Source/FilteringFunctions/arm_iir_lattice_init_f32.c
+++ b/Source/FilteringFunctions/arm_iir_lattice_init_f32.c
@@ -65,9 +65,6 @@ void arm_iir_lattice_init_f32(
   /* Assign ladder coefficient pointer */
   S->pvCoeffs = pvCoeffs;
 
-  /* Clear state buffer and size is always blockSize + numStages */
-  memset(pState, 0, (numStages + blockSize) * sizeof(float32_t));
-
   /* Assign state pointer */
   S->pState = pState;
 }
diff --git a/Source/FilteringFunctions/arm_iir_lattice_init_q15.c b/Source/FilteringFunctions/arm_iir_lattice_init_q15.c
index 873c342a..6fde4b05 100644
--- a/Source/FilteringFunctions/arm_iir_lattice_init_q15.c
+++ b/Source/FilteringFunctions/arm_iir_lattice_init_q15.c
@@ -65,9 +65,6 @@ void arm_iir_lattice_init_q15(
   /* Assign ladder coefficient pointer */
   S->pvCoeffs = pvCoeffs;
 
-  /* Clear state buffer and size is always blockSize + numStages */
-  memset(pState, 0, (numStages + blockSize) * sizeof(q15_t));
-
   /* Assign state pointer */
   S->pState = pState;
 }
diff --git a/Source/FilteringFunctions/arm_iir_lattice_init_q31.c b/Source/FilteringFunctions/arm_iir_lattice_init_q31.c
index 59b26d3c..d7232ef9 100644
--- a/Source/FilteringFunctions/arm_iir_lattice_init_q31.c
+++ b/Source/FilteringFunctions/arm_iir_lattice_init_q31.c
@@ -65,9 +65,6 @@ void arm_iir_lattice_init_q31(
   /* Assign ladder coefficient pointer */
   S->pvCoeffs = pvCoeffs;
 
-  /* Clear state buffer and size is always blockSize + numStages */
-  memset(pState, 0, (numStages + blockSize) * sizeof(q31_t));
-
   /* Assign state pointer */
   S->pState = pState;
 }
diff --git a/Source/FilteringFunctions/arm_lms_init_f32.c b/Source/FilteringFunctions/arm_lms_init_f32.c
index cf472afd..df7f9038 100644
--- a/Source/FilteringFunctions/arm_lms_init_f32.c
+++ b/Source/FilteringFunctions/arm_lms_init_f32.c
@@ -66,9 +66,6 @@ void arm_lms_init_f32(
   /* Assign coefficient pointer */
   S->pCoeffs = pCoeffs;
 
-  /* Clear state buffer and size is always blockSize + numTaps */
-  memset(pState, 0, (numTaps + (blockSize - 1)) * sizeof(float32_t));
-
   /* Assign state pointer */
   S->pState = pState;
 
diff --git a/Source/FilteringFunctions/arm_lms_init_q15.c b/Source/FilteringFunctions/arm_lms_init_q15.c
index 31c2bff2..ca6cc1da 100644
--- a/Source/FilteringFunctions/arm_lms_init_q15.c
+++ b/Source/FilteringFunctions/arm_lms_init_q15.c
@@ -74,9 +74,6 @@ void arm_lms_init_q15(
   /* Assign coefficient pointer */
   S->pCoeffs = pCoeffs;
 
-  /* Clear state buffer and size is always blockSize + numTaps - 1 */
-  memset(pState, 0, (numTaps + (blockSize - 1U)) * sizeof(q15_t));
-
   /* Assign state pointer */
   S->pState = pState;
 
diff --git a/Source/FilteringFunctions/arm_lms_init_q31.c b/Source/FilteringFunctions/arm_lms_init_q31.c
index e657a938..b61e188a 100644
--- a/Source/FilteringFunctions/arm_lms_init_q31.c
+++ b/Source/FilteringFunctions/arm_lms_init_q31.c
@@ -74,9 +74,6 @@ void arm_lms_init_q31(
   /* Assign coefficient pointer */
   S->pCoeffs = pCoeffs;
 
-  /* Clear state buffer and size is always blockSize + numTaps - 1 */
-  memset(pState, 0, (numTaps + (blockSize - 1U)) * sizeof(q31_t));
-
   /* Assign state pointer */
   S->pState = pState;
 
diff --git a/Source/FilteringFunctions/arm_lms_norm_init_f32.c b/Source/FilteringFunctions/arm_lms_norm_init_f32.c
index b0b7ea50..d121a070 100644
--- a/Source/FilteringFunctions/arm_lms_norm_init_f32.c
+++ b/Source/FilteringFunctions/arm_lms_norm_init_f32.c
@@ -71,9 +71,6 @@ void arm_lms_norm_init_f32(
   /* Assign coefficient pointer */
   S->pCoeffs = pCoeffs;
 
-  /* Clear state buffer and size is always blockSize + numTaps - 1 */
-  memset(pState, 0, (numTaps + (blockSize - 1U)) * sizeof(float32_t));
-
   /* Assign state pointer */
   S->pState = pState;
 
diff --git a/Source/FilteringFunctions/arm_lms_norm_init_q15.c b/Source/FilteringFunctions/arm_lms_norm_init_q15.c
index 5bbfc420..2c6d183a 100644
--- a/Source/FilteringFunctions/arm_lms_norm_init_q15.c
+++ b/Source/FilteringFunctions/arm_lms_norm_init_q15.c
@@ -71,9 +71,6 @@ void arm_lms_norm_init_q15(
   /* Assign coefficient pointer */
   S->pCoeffs = pCoeffs;
 
-  /* Clear state buffer and size is always blockSize + numTaps - 1 */
-  memset(pState, 0, (numTaps + (blockSize - 1U)) * sizeof(q15_t));
-
   /* Assign post Shift value applied to coefficients */
   S->postShift = postShift;
 
diff --git a/Source/FilteringFunctions/arm_lms_norm_init_q31.c b/Source/FilteringFunctions/arm_lms_norm_init_q31.c
index cc429b00..1e3ff849 100644
--- a/Source/FilteringFunctions/arm_lms_norm_init_q31.c
+++ b/Source/FilteringFunctions/arm_lms_norm_init_q31.c
@@ -70,9 +70,6 @@ void arm_lms_norm_init_q31(
   /* Assign coefficient pointer */
   S->pCoeffs = pCoeffs;
 
-  /* Clear state buffer and size is always blockSize + numTaps - 1 */
-  memset(pState, 0, (numTaps + (blockSize - 1U)) * sizeof(q31_t));
-
   /* Assign post Shift value applied to coefficients */
   S->postShift = postShift;