Diff: cmsis_dsp/MatrixFunctions/arm_mat_sub_f32.c

Revision:

5:a912b042151f

Parent:

4:9cee975aadce

--- a/cmsis_dsp/MatrixFunctions/arm_mat_sub_f32.c	Mon Jun 23 09:30:09 2014 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,209 +0,0 @@
-/* ----------------------------------------------------------------------    
-* Copyright (C) 2010-2013 ARM Limited. All rights reserved.    
-*    
-* $Date:        17. January 2013 
-* $Revision: 	V1.4.1
-*    
-* Project: 	    CMSIS DSP Library    
-* Title:	    arm_mat_sub_f32.c    
-*    
-* Description:	Floating-point matrix subtraction.    
-*    
-* 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 MatrixSub Matrix Subtraction        
- *        
- * Subtract two matrices.        
- * \image html MatrixSubtraction.gif "Subraction 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 MatrixSub        
- * @{        
- */
-
-/**        
- * @brief Floating-point matrix subtraction        
- * @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_sub_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 subtraction */
-
-#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 /*    #ifdef ARM_MATH_MATRIX_CHECK    */
-  {
-    /* Total number of samples in the input matrix */
-    numSamples = (uint32_t) pSrcA->numRows * pSrcA->numCols;
-
-#ifndef ARM_MATH_CM0_FAMILY
-
-    /* Run the below code for Cortex-M4 and Cortex-M3 */
-
-    /* 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) */
-      /* Subtract 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) */
-      /* Subtract 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 MatrixSub group        
- */