diff options
Diffstat (limited to 'Drivers/CMSIS/DSP/Source/SupportFunctions/arm_fill_f16.c')
-rw-r--r-- | Drivers/CMSIS/DSP/Source/SupportFunctions/arm_fill_f16.c | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/Drivers/CMSIS/DSP/Source/SupportFunctions/arm_fill_f16.c b/Drivers/CMSIS/DSP/Source/SupportFunctions/arm_fill_f16.c new file mode 100644 index 0000000..0b08f12 --- /dev/null +++ b/Drivers/CMSIS/DSP/Source/SupportFunctions/arm_fill_f16.c @@ -0,0 +1,127 @@ +/* ---------------------------------------------------------------------- + * Project: CMSIS DSP Library + * Title: arm_fill_f16.c + * Description: Fills a constant value into a floating-point 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 + */ + + +/** + @addtogroup Fill + @{ + */ + +/** + @brief Fills a constant value into a f16 vector. + @param[in] value input value to be filled + @param[out] pDst points to output vector + @param[in] blockSize number of samples in each vector + @return none + */ +#if defined(ARM_MATH_MVE_FLOAT16) && !defined(ARM_MATH_AUTOVECTORIZE) + +void arm_fill_f16( + float16_t value, + float16_t * pDst, + uint32_t blockSize) +{ + do { + mve_pred16_t p = vctp16q(blockSize); + + vstrhq_p_f16(pDst, + vdupq_m_n_f16(vuninitializedq_f16(), value, p), p); + /* + * Decrement the blockSize loop counter + * Advance vector source and destination pointers + */ + pDst += 8; + blockSize -= 8; + } + while ((int32_t) blockSize > 0); +} +#else +void arm_fill_f16( + float16_t value, + float16_t * pDst, + uint32_t blockSize) +{ + uint32_t blkCnt; /* Loop counter */ + +#if defined (ARM_MATH_LOOPUNROLL) + + /* Loop unrolling: Compute 4 outputs at a time */ + blkCnt = blockSize >> 2U; + + while (blkCnt > 0U) + { + /* C = value */ + + /* Fill value in destination buffer */ + *pDst++ = value; + *pDst++ = value; + *pDst++ = value; + *pDst++ = value; + + /* Decrement loop counter */ + blkCnt--; + } + + /* Loop unrolling: Compute remaining outputs */ + blkCnt = blockSize % 0x4U; + +#else + + /* Initialize blkCnt with number of samples */ + blkCnt = blockSize; + +#endif /* #if defined (ARM_MATH_LOOPUNROLL) */ + + while (blkCnt > 0U) + { + /* C = value */ + + /* Fill value in destination buffer */ + *pDst++ = value; + + /* Decrement loop counter */ + blkCnt--; + } +} +#endif /* defined(ARM_MATH_MVEF) && !defined(ARM_MATH_AUTOVECTORIZE) */ + +/** + @} end of Fill group + */ + +#endif /* #if defined(ARM_FLOAT16_SUPPORTED) */ + |