diff options
Diffstat (limited to 'Drivers/CMSIS/DSP/Source/MatrixFunctions/arm_mat_scale_f16.c')
| -rw-r--r-- | Drivers/CMSIS/DSP/Source/MatrixFunctions/arm_mat_scale_f16.c | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/Drivers/CMSIS/DSP/Source/MatrixFunctions/arm_mat_scale_f16.c b/Drivers/CMSIS/DSP/Source/MatrixFunctions/arm_mat_scale_f16.c new file mode 100644 index 0000000..fc2193d --- /dev/null +++ b/Drivers/CMSIS/DSP/Source/MatrixFunctions/arm_mat_scale_f16.c @@ -0,0 +1,208 @@ +/* ---------------------------------------------------------------------- + * Project: CMSIS DSP Library + * Title: arm_mat_scale_f16.c + * Description: Multiplies a floating-point matrix by a scalar + * + * $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/matrix_functions_f16.h" + +#if defined(ARM_FLOAT16_SUPPORTED) + + +/** + @ingroup groupMatrix + */ + + +/** + @addtogroup MatrixScale + @{ + */ + +/** + @brief Floating-point matrix scaling. + @param[in] pSrc points to input matrix + @param[in] scale scale factor to be applied + @param[out] pDst points to output matrix structure + @return execution status + - \ref ARM_MATH_SUCCESS : Operation successful + - \ref ARM_MATH_SIZE_MISMATCH : Matrix size check failed + */ +#if defined(ARM_MATH_MVE_FLOAT16) && !defined(ARM_MATH_AUTOVECTORIZE) + +arm_status arm_mat_scale_f16( + const arm_matrix_instance_f16 * pSrc, + float16_t scale, + arm_matrix_instance_f16 * pDst) +{ + arm_status status; /* status of matrix scaling */ + #ifdef ARM_MATH_MATRIX_CHECK + /* Check for matrix mismatch condition */ + if ((pSrc->numRows != pDst->numRows) || (pSrc->numCols != pDst->numCols)) + { + /* Set status as ARM_MATH_SIZE_MISMATCH */ + status = ARM_MATH_SIZE_MISMATCH; + } + else +#endif /* #ifdef ARM_MATH_MATRIX_CHECK */ + { + float16_t *pIn = pSrc->pData; /* input data matrix pointer */ + float16_t *pOut = pDst->pData; /* output data matrix pointer */ + uint32_t numSamples; /* total number of elements in the matrix */ + uint32_t blkCnt; /* loop counters */ + f16x8_t vecIn, vecOut, vecScale; + float16_t const *pInVec; + + pInVec = (float16_t const *) pIn; + + vecScale = vdupq_n_f16(scale); + /* + * Total number of samples in the input matrix + */ + numSamples = (uint32_t) pSrc->numRows * pSrc->numCols; + blkCnt = numSamples >> 3; + while (blkCnt > 0U) + { + /* + * C(m,n) = A(m,n) * scale + * Scaling and results are stored in the destination buffer. + */ + vecIn = vld1q(pInVec); + pInVec += 8; + + vecOut = vmulq_f16(vecIn, vecScale); + + vst1q(pOut, vecOut); + pOut += 8; + /* + * Decrement the blockSize loop counter + */ + blkCnt--; + } + /* + * tail + */ + blkCnt = numSamples & 7; + if (blkCnt > 0U) + { + mve_pred16_t p0 = vctp16q(blkCnt); + vecIn = vld1q(pInVec); + vecOut = vecIn * scale; + + vstrhq_p(pOut, vecOut, p0); + } + /* Set status as ARM_MATH_SUCCESS */ + status = ARM_MATH_SUCCESS; + } + + /* Return to application */ + return (status); + +} +#else + +arm_status arm_mat_scale_f16( + const arm_matrix_instance_f16 * pSrc, + float16_t scale, + arm_matrix_instance_f16 * pDst) +{ + float16_t *pIn = pSrc->pData; /* Input data matrix pointer */ + float16_t *pOut = pDst->pData; /* Output data matrix pointer */ + uint32_t numSamples; /* Total number of elements in the matrix */ + uint32_t blkCnt; /* Loop counters */ + arm_status status; /* Status of matrix scaling */ + +#ifdef ARM_MATH_MATRIX_CHECK + + /* Check for matrix mismatch condition */ + if ((pSrc->numRows != pDst->numRows) || + (pSrc->numCols != pDst->numCols) ) + { + /* Set status as ARM_MATH_SIZE_MISMATCH */ + status = ARM_MATH_SIZE_MISMATCH; + } + else + +#endif /* #ifdef ARM_MATH_MATRIX_CHECK */ + + { + /* Total number of samples in input matrix */ + numSamples = (uint32_t) pSrc->numRows * pSrc->numCols; + +#if defined (ARM_MATH_LOOPUNROLL) + + /* Loop unrolling: Compute 4 outputs at a time */ + blkCnt = numSamples >> 2U; + + while (blkCnt > 0U) + { + /* C(m,n) = A(m,n) * scale */ + + /* Scale and store result in destination buffer. */ + *pOut++ = (_Float16)(*pIn++) * (_Float16)scale; + *pOut++ = (_Float16)(*pIn++) * (_Float16)scale; + *pOut++ = (_Float16)(*pIn++) * (_Float16)scale; + *pOut++ = (_Float16)(*pIn++) * (_Float16)scale; + + /* Decrement loop counter */ + blkCnt--; + } + + /* Loop unrolling: Compute remaining outputs */ + blkCnt = numSamples % 0x4U; + +#else + + /* Initialize blkCnt with number of samples */ + blkCnt = numSamples; + +#endif /* #if defined (ARM_MATH_LOOPUNROLL) */ + + while (blkCnt > 0U) + { + /* C(m,n) = A(m,n) * scale */ + + /* Scale and store result in destination buffer. */ + *pOut++ = (_Float16)(*pIn++) * (_Float16)scale; + + /* Decrement loop counter */ + blkCnt--; + } + + /* Set status as ARM_MATH_SUCCESS */ + status = ARM_MATH_SUCCESS; + } + + /* Return to application */ + return (status); +} +#endif /* defined(ARM_MATH_MVEF) && !defined(ARM_MATH_AUTOVECTORIZE) */ + +/** + @} end of MatrixScale group + */ + +#endif /* #if defined(ARM_FLOAT16_SUPPORTED) */ + |