| /* ---------------------------------------------------------------------------- |
| * Copyright (C) 2010-2014 ARM Limited. All rights reserved. |
| * |
| * $Date: 19. March 2015 |
| * $Revision: V.1.4.5 |
| * |
| * Project: CMSIS DSP Library |
| * Title: arm_mat_add_f32.c |
| * |
| * Description: Floating-point matrix addition |
| * |
| * Target Processor: Cortex-M4/Cortex-M3/Cortex-M0 |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * - Neither the name of ARM LIMITED nor the names of its contributors |
| * may be used to endorse or promote products derived from this |
| * software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
| * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| * -------------------------------------------------------------------------- */ |
| |
| #include "arm_math.h" |
| |
| /** |
| * @ingroup groupMatrix |
| */ |
| |
| /** |
| * @defgroup MatrixAdd Matrix Addition |
| * |
| * Adds two matrices. |
| * \image html MatrixAddition.gif "Addition of two 3 x 3 matrices" |
| * |
| * The functions check to make sure that |
| * <code>pSrcA</code>, <code>pSrcB</code>, and <code>pDst</code> have the same |
| * number of rows and columns. |
| */ |
| |
| /** |
| * @addtogroup MatrixAdd |
| * @{ |
| */ |
| |
| |
| /** |
| * @brief Floating-point matrix addition. |
| * @param[in] *pSrcA points to the first input matrix structure |
| * @param[in] *pSrcB points to the second input matrix structure |
| * @param[out] *pDst points to output matrix structure |
| * @return The function returns either |
| * <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking. |
| */ |
| |
| arm_status arm_mat_add_f32( |
| const arm_matrix_instance_f32 * pSrcA, |
| const arm_matrix_instance_f32 * pSrcB, |
| arm_matrix_instance_f32 * pDst) |
| { |
| float32_t *pIn1 = pSrcA->pData; /* input data matrix pointer A */ |
| float32_t *pIn2 = pSrcB->pData; /* input data matrix pointer B */ |
| float32_t *pOut = pDst->pData; /* output data matrix pointer */ |
| |
| #ifndef ARM_MATH_CM0_FAMILY |
| |
| float32_t inA1, inA2, inB1, inB2, out1, out2; /* temporary variables */ |
| |
| #endif // #ifndef ARM_MATH_CM0_FAMILY |
| |
| uint32_t numSamples; /* total number of elements in the matrix */ |
| uint32_t blkCnt; /* loop counters */ |
| arm_status status; /* status of matrix addition */ |
| |
| #ifdef ARM_MATH_MATRIX_CHECK |
| /* Check for matrix mismatch condition */ |
| if((pSrcA->numRows != pSrcB->numRows) || |
| (pSrcA->numCols != pSrcB->numCols) || |
| (pSrcA->numRows != pDst->numRows) || (pSrcA->numCols != pDst->numCols)) |
| { |
| /* Set status as ARM_MATH_SIZE_MISMATCH */ |
| status = ARM_MATH_SIZE_MISMATCH; |
| } |
| else |
| #endif |
| { |
| |
| /* Total number of samples in the input matrix */ |
| numSamples = (uint32_t) pSrcA->numRows * pSrcA->numCols; |
| |
| #ifndef ARM_MATH_CM0_FAMILY |
| |
| /* Loop unrolling */ |
| blkCnt = numSamples >> 2u; |
| |
| /* First part of the processing with loop unrolling. Compute 4 outputs at a time. |
| ** a second loop below computes the remaining 1 to 3 samples. */ |
| while(blkCnt > 0u) |
| { |
| /* C(m,n) = A(m,n) + B(m,n) */ |
| /* Add and then store the results in the destination buffer. */ |
| /* Read values from source A */ |
| inA1 = pIn1[0]; |
| |
| /* Read values from source B */ |
| inB1 = pIn2[0]; |
| |
| /* Read values from source A */ |
| inA2 = pIn1[1]; |
| |
| /* out = sourceA + sourceB */ |
| out1 = inA1 + inB1; |
| |
| /* Read values from source B */ |
| inB2 = pIn2[1]; |
| |
| /* Read values from source A */ |
| inA1 = pIn1[2]; |
| |
| /* out = sourceA + sourceB */ |
| out2 = inA2 + inB2; |
| |
| /* Read values from source B */ |
| inB1 = pIn2[2]; |
| |
| /* Store result in destination */ |
| pOut[0] = out1; |
| pOut[1] = out2; |
| |
| /* Read values from source A */ |
| inA2 = pIn1[3]; |
| |
| /* Read values from source B */ |
| inB2 = pIn2[3]; |
| |
| /* out = sourceA + sourceB */ |
| out1 = inA1 + inB1; |
| |
| /* out = sourceA + sourceB */ |
| out2 = inA2 + inB2; |
| |
| /* Store result in destination */ |
| pOut[2] = out1; |
| |
| /* Store result in destination */ |
| pOut[3] = out2; |
| |
| |
| /* update pointers to process next sampels */ |
| pIn1 += 4u; |
| pIn2 += 4u; |
| pOut += 4u; |
| /* Decrement the loop counter */ |
| blkCnt--; |
| } |
| |
| /* If the numSamples is not a multiple of 4, compute any remaining output samples here. |
| ** No loop unrolling is used. */ |
| blkCnt = numSamples % 0x4u; |
| |
| #else |
| |
| /* Run the below code for Cortex-M0 */ |
| |
| /* Initialize blkCnt with number of samples */ |
| blkCnt = numSamples; |
| |
| #endif /* #ifndef ARM_MATH_CM0_FAMILY */ |
| |
| while(blkCnt > 0u) |
| { |
| /* C(m,n) = A(m,n) + B(m,n) */ |
| /* Add and then store the results in the destination buffer. */ |
| *pOut++ = (*pIn1++) + (*pIn2++); |
| |
| /* Decrement the loop counter */ |
| blkCnt--; |
| } |
| |
| /* set status as ARM_MATH_SUCCESS */ |
| status = ARM_MATH_SUCCESS; |
| |
| } |
| |
| /* Return to application */ |
| return (status); |
| } |
| |
| /** |
| * @} end of MatrixAdd group |
| */ |