You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
135 lines
3.3 KiB
C
135 lines
3.3 KiB
C
/* ----------------------------------------------------------------------
|
|
* Project: CMSIS DSP Library
|
|
* Title: arm_float_to_q15.c
|
|
* Description: Converts the elements of the floating-point vector to Q15 vector
|
|
*
|
|
* $Date: 23 April 2021
|
|
* $Revision: V1.9.0
|
|
*
|
|
* Target Processor: Cortex-M and Cortex-A cores
|
|
* -------------------------------------------------------------------- */
|
|
/*
|
|
* Copyright (C) 2010-2021 ARM Limited or its affiliates. All rights reserved.
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the License); you may
|
|
* not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#include "dsp/support_functions_f16.h"
|
|
|
|
#if defined(ARM_FLOAT16_SUPPORTED)
|
|
|
|
|
|
/**
|
|
@ingroup groupSupport
|
|
*/
|
|
|
|
/**
|
|
* @defgroup f16_to_x Convert 16-bit floating point value
|
|
*/
|
|
|
|
/**
|
|
@addtogroup f16_to_x
|
|
@{
|
|
*/
|
|
|
|
/**
|
|
@brief Converts the elements of the f16 vector to f32 vector.
|
|
@param[in] pSrc points to the f16 input vector
|
|
@param[out] pDst points to the f32 output vector
|
|
@param[in] blockSize number of samples in each vector
|
|
@return none
|
|
|
|
*/
|
|
|
|
#if defined(ARM_MATH_MVE_FLOAT16) && !defined(ARM_MATH_AUTOVECTORIZE) && defined(__CMSIS_GCC_H)
|
|
#pragma GCC warning "Scalar version of arm_f16_to_float built. Helium version has build issues with gcc."
|
|
#endif
|
|
|
|
#if defined(ARM_MATH_MVE_FLOAT16) && !defined(ARM_MATH_AUTOVECTORIZE) && !defined(__CMSIS_GCC_H)
|
|
|
|
void arm_f16_to_float(
|
|
const float16_t * pSrc,
|
|
float32_t * pDst,
|
|
uint32_t blockSize)
|
|
{
|
|
int32_t blkCnt; /* loop counters */
|
|
float16x8_t vecDst;
|
|
float32x4x2_t tmp;
|
|
|
|
blkCnt = blockSize >> 3;
|
|
while (blkCnt > 0)
|
|
{
|
|
vecDst = vldrhq_f16(pSrc);
|
|
pSrc += 8;
|
|
|
|
tmp.val[0] = vcvtbq_f32_f16(vecDst);
|
|
tmp.val[1] = vcvttq_f32_f16(vecDst);
|
|
vst2q(pDst,tmp);
|
|
|
|
pDst += 8;
|
|
/*
|
|
* Decrement the blockSize loop counter
|
|
*/
|
|
blkCnt--;
|
|
}
|
|
/*
|
|
* tail
|
|
* (will be merged thru tail predication)
|
|
*/
|
|
blkCnt = blockSize & 7;
|
|
while (blkCnt > 0)
|
|
{
|
|
|
|
*pDst++ = (float32_t) *pSrc++;
|
|
/*
|
|
* Decrement the loop counter
|
|
*/
|
|
blkCnt--;
|
|
}
|
|
}
|
|
|
|
#else
|
|
void arm_f16_to_float(
|
|
const float16_t * pSrc,
|
|
float32_t * pDst,
|
|
uint32_t blockSize)
|
|
{
|
|
const float16_t *pIn = pSrc; /* Src pointer */
|
|
uint32_t blkCnt; /* loop counter */
|
|
|
|
/*
|
|
* Loop over blockSize number of values
|
|
*/
|
|
blkCnt = blockSize;
|
|
|
|
while (blkCnt > 0U)
|
|
{
|
|
|
|
*pDst++ = (float32_t) * pIn++;
|
|
/*
|
|
* Decrement the loop counter
|
|
*/
|
|
blkCnt--;
|
|
}
|
|
}
|
|
#endif /* defined(ARM_MATH_MVEF) && !defined(ARM_MATH_AUTOVECTORIZE) */
|
|
|
|
/**
|
|
@} end of f16_to_x group
|
|
*/
|
|
|
|
#endif /* #if defined(ARM_FLOAT16_SUPPORTED) */
|
|
|