Diff: cmsis_dsp/ComplexMathFunctions/arm_cmplx_mag_f32.c

Revision:

5:a912b042151f

Parent:

4:9cee975aadce

--- a/cmsis_dsp/ComplexMathFunctions/arm_cmplx_mag_f32.c	Mon Jun 23 09:30:09 2014 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,165 +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_cmplx_mag_f32.c    
-*    
-* Description:	Floating-point complex magnitude.    
-*    
-* 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 groupCmplxMath    
- */
-
-/**    
- * @defgroup cmplx_mag Complex Magnitude    
- *    
- * Computes the magnitude of the elements of a complex data vector.    
- *   
- * The <code>pSrc</code> points to the source data and    
- * <code>pDst</code> points to the where the result should be written.    
- * <code>numSamples</code> specifies the number of complex samples    
- * in the input array and the data is stored in an interleaved fashion    
- * (real, imag, real, imag, ...).    
- * The input array has a total of <code>2*numSamples</code> values;    
- * the output array has a total of <code>numSamples</code> values.    
- * The underlying algorithm is used:    
- *    
- * <pre>    
- * for(n=0; n<numSamples; n++) {    
- *     pDst[n] = sqrt(pSrc[(2*n)+0]^2 + pSrc[(2*n)+1]^2);    
- * }    
- * </pre>    
- *    
- * There are separate functions for floating-point, Q15, and Q31 data types.    
- */
-
-/**    
- * @addtogroup cmplx_mag    
- * @{    
- */
-/**    
- * @brief Floating-point complex magnitude.    
- * @param[in]       *pSrc points to complex input buffer    
- * @param[out]      *pDst points to real output buffer    
- * @param[in]       numSamples number of complex samples in the input vector    
- * @return none.    
- *    
- */
-
-
-void arm_cmplx_mag_f32(
-  float32_t * pSrc,
-  float32_t * pDst,
-  uint32_t numSamples)
-{
-  float32_t realIn, imagIn;                      /* Temporary variables to hold input values */
-
-#ifndef ARM_MATH_CM0_FAMILY
-
-  /* Run the below code for Cortex-M4 and Cortex-M3 */
-  uint32_t blkCnt;                               /* loop counter */
-
-  /*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[0] = sqrt(A[0] * A[0] + A[1] * A[1]) */
-    realIn = *pSrc++;
-    imagIn = *pSrc++;
-    /* store the result in the destination buffer. */
-    arm_sqrt_f32((realIn * realIn) + (imagIn * imagIn), pDst++);
-
-    realIn = *pSrc++;
-    imagIn = *pSrc++;
-    arm_sqrt_f32((realIn * realIn) + (imagIn * imagIn), pDst++);
-
-    realIn = *pSrc++;
-    imagIn = *pSrc++;
-    arm_sqrt_f32((realIn * realIn) + (imagIn * imagIn), pDst++);
-
-    realIn = *pSrc++;
-    imagIn = *pSrc++;
-    arm_sqrt_f32((realIn * realIn) + (imagIn * imagIn), pDst++);
-
-
-    /* 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;
-
-  while(blkCnt > 0u)
-  {
-    /* C[0] = sqrt(A[0] * A[0] + A[1] * A[1]) */
-    realIn = *pSrc++;
-    imagIn = *pSrc++;
-    /* store the result in the destination buffer. */
-    arm_sqrt_f32((realIn * realIn) + (imagIn * imagIn), pDst++);
-
-    /* Decrement the loop counter */
-    blkCnt--;
-  }
-
-#else
-
-  /* Run the below code for Cortex-M0 */
-
-  while(numSamples > 0u)
-  {
-    /* out = sqrt((real * real) + (imag * imag)) */
-    realIn = *pSrc++;
-    imagIn = *pSrc++;
-    /* store the result in the destination buffer. */
-    arm_sqrt_f32((realIn * realIn) + (imagIn * imagIn), pDst++);
-
-    /* Decrement the loop counter */
-    numSamples--;
-  }
-
-#endif /* #ifndef ARM_MATH_CM0_FAMILY */
-
-}
-
-/**    
- * @} end of cmplx_mag group    
- */