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Diffstat (limited to 'Drivers/CMSIS/DSP/Include/dsp/support_functions_f16.h')
| -rw-r--r-- | Drivers/CMSIS/DSP/Include/dsp/support_functions_f16.h | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/Drivers/CMSIS/DSP/Include/dsp/support_functions_f16.h b/Drivers/CMSIS/DSP/Include/dsp/support_functions_f16.h new file mode 100644 index 0000000..bc3f266 --- /dev/null +++ b/Drivers/CMSIS/DSP/Include/dsp/support_functions_f16.h @@ -0,0 +1,187 @@ +/****************************************************************************** + * @file support_functions_f16.h + * @brief Public header file for CMSIS DSP Library + * @version V1.10.0 + * @date 08 July 2021 + * Target Processor: Cortex-M and Cortex-A cores + ******************************************************************************/ +/* + * Copyright (c) 2010-2020 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. + */ + + +#ifndef _SUPPORT_FUNCTIONS_F16_H_ +#define _SUPPORT_FUNCTIONS_F16_H_ + +#include "arm_math_types_f16.h" +#include "arm_math_memory.h" + +#include "dsp/none.h" +#include "dsp/utils.h" + +#ifdef __cplusplus +extern "C" +{ +#endif + +#if defined(ARM_FLOAT16_SUPPORTED) + + /** + * @brief Copies the elements of a floating-point vector. + * @param[in] pSrc input pointer + * @param[out] pDst output pointer + * @param[in] blockSize number of samples to process + */ +void arm_copy_f16(const float16_t * pSrc, float16_t * pDst, uint32_t blockSize); + + /** + * @brief Fills a constant value into a floating-point vector. + * @param[in] value input value to be filled + * @param[out] pDst output pointer + * @param[in] blockSize number of samples to process + */ +void arm_fill_f16(float16_t value, float16_t * pDst, uint32_t blockSize); + +/** + * @brief Converts the elements of the floating-point vector to Q31 vector. + * @param[in] pSrc points to the f16 input vector + * @param[out] pDst points to the q15 output vector + * @param[in] blockSize length of the input vector + */ +void arm_f16_to_q15(const float16_t * pSrc, q15_t * pDst, uint32_t blockSize); + +/** + * @brief Converts the elements of the floating-point vector to Q31 vector. + * @param[in] pSrc points to the q15 input vector + * @param[out] pDst points to the f16 output vector + * @param[in] blockSize length of the input vector + */ +void arm_q15_to_f16(const q15_t * pSrc, float16_t * pDst, uint32_t blockSize); + + +/** + * @brief Converts the elements of the floating-point vector to Q31 vector. + * @param[in] pSrc points to the f32 input vector + * @param[out] pDst points to the f16 output vector + * @param[in] blockSize length of the input vector + */ +void arm_float_to_f16(const float32_t * pSrc, float16_t * pDst, uint32_t blockSize); + +/** + * @brief Converts the elements of the floating-point vector to Q31 vector. + * @param[in] pSrc points to the f16 input vector + * @param[out] pDst points to the f32 output vector + * @param[in] blockSize length of the input vector + */ +void arm_f16_to_float(const float16_t * pSrc, float32_t * pDst, uint32_t blockSize); + +/** + * @brief Weighted sum + * + * + * @param[in] *in Array of input values. + * @param[in] *weigths Weights + * @param[in] blockSize Number of samples in the input array. + * @return Weighted sum + * + */ +float16_t arm_weighted_sum_f16(const float16_t *in + , const float16_t *weigths + , uint32_t blockSize); + +/** + * @brief Barycenter + * + * + * @param[in] in List of vectors + * @param[in] weights Weights of the vectors + * @param[out] out Barycenter + * @param[in] nbVectors Number of vectors + * @param[in] vecDim Dimension of space (vector dimension) + * @return None + * + */ +void arm_barycenter_f16(const float16_t *in + , const float16_t *weights + , float16_t *out + , uint32_t nbVectors + , uint32_t vecDim); + + +/** + @ingroup groupSupport + */ + +/** + * @defgroup typecast Typecasting + */ + +/** + @addtogroup typecast + @{ + */ + +/** + * @brief Interpret a f16 as an s16 value + * @param[in] x input value. + * @return return value. + * + * @par Description + * It is a typecast. No conversion of the float to int is done. + * The memcpy will be optimized out by the compiler. + * memcpy is used to prevent type punning issues. + * With gcc, -fno-builtins MUST not be used or the + * memcpy will not be optimized out. + */ +__STATIC_INLINE int16_t arm_typecast_s16_f16(float16_t x) +{ + int16_t res; + res=*(int16_t*)memcpy((char*)&res,(char*)&x,sizeof(float16_t)); + return(res); +} + +/** + * @brief Interpret an s16 as an f16 value + * @param[in] x input value. + * @return return value. + * + * @par Description + * It is a typecast. No conversion of the int to float is done. + * The memcpy will be optimized out by the compiler. + * memcpy is used to prevent type punning issues. + * With gcc, -fno-builtins MUST not be used or the + * memcpy will not be optimized out. + */ +__STATIC_INLINE float16_t arm_typecast_f16_s16(int16_t x) +{ + float16_t res; + res=*(float16_t*)memcpy((char*)&res,(char*)&x,sizeof(int16_t)); + return(res); +} + + +/** + @} end of typecast group + */ + + +#endif /*defined(ARM_FLOAT16_SUPPORTED)*/ +#ifdef __cplusplus +} +#endif + +#endif /* ifndef _SUPPORT_FUNCTIONS_F16_H_ */ |