Diff: cmsis_dsp/ComplexMathFunctions/arm_cmplx_conj_f32.c

Revision:

5:a912b042151f

Parent:

4:9cee975aadce

--- a/cmsis_dsp/ComplexMathFunctions/arm_cmplx_conj_f32.c	Mon Jun 23 09:30:09 2014 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,182 +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_conj_f32.c    
-*    
-* Description:	Floating-point complex conjugate.    
-*    
-* 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_conj Complex Conjugate        
- *        
- * Conjugates 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        
- * and the data in each array is stored in an interleaved fashion        
- * (real, imag, real, imag, ...).        
- * Each array has a total of <code>2*numSamples</code> values.        
- * The underlying algorithm is used:        
- *        
- * <pre>        
- * for(n=0; n<numSamples; n++) {        
- *     pDst[(2*n)+0)] = pSrc[(2*n)+0];     // real part        
- *     pDst[(2*n)+1)] = -pSrc[(2*n)+1];    // imag part        
- * }        
- * </pre>        
- *        
- * There are separate functions for floating-point, Q15, and Q31 data types.        
- */
-
-/**        
- * @addtogroup cmplx_conj        
- * @{        
- */
-
-/**        
- * @brief  Floating-point complex conjugate.        
- * @param  *pSrc points to the input vector        
- * @param  *pDst points to the output vector        
- * @param  numSamples number of complex samples in each vector        
- * @return none.        
- */
-
-void arm_cmplx_conj_f32(
-  float32_t * pSrc,
-  float32_t * pDst,
-  uint32_t numSamples)
-{
-  uint32_t blkCnt;                               /* loop counter */
-
-#ifndef ARM_MATH_CM0_FAMILY
-
-  /* Run the below code for Cortex-M4 and Cortex-M3 */
-  float32_t inR1, inR2, inR3, inR4;
-  float32_t inI1, inI2, inI3, inI4;
-
-  /*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]+jC[1] = A[0]+ j (-1) A[1] */
-    /* Calculate Complex Conjugate and then store the results in the destination buffer. */
-    /* read real input samples */
-    inR1 = pSrc[0];
-    /* store real samples to destination */
-    pDst[0] = inR1;
-    inR2 = pSrc[2];
-    pDst[2] = inR2;
-    inR3 = pSrc[4];
-    pDst[4] = inR3;
-    inR4 = pSrc[6];
-    pDst[6] = inR4;
-
-    /* read imaginary input samples */
-    inI1 = pSrc[1];
-    inI2 = pSrc[3];
-
-    /* conjugate input */
-    inI1 = -inI1;
-
-    /* read imaginary input samples */
-    inI3 = pSrc[5];
-
-    /* conjugate input */
-    inI2 = -inI2;
-
-    /* read imaginary input samples */
-    inI4 = pSrc[7];
-
-    /* conjugate input */
-    inI3 = -inI3;
-
-    /* store imaginary samples to destination */
-    pDst[1] = inI1;
-    pDst[3] = inI2;
-
-    /* conjugate input */
-    inI4 = -inI4;
-
-    /* store imaginary samples to destination */
-    pDst[5] = inI3;
-
-    /* increment source pointer by 8 to process next sampels */
-    pSrc += 8u;
-
-    /* store imaginary sample to destination */
-    pDst[7] = inI4;
-
-    /* increment destination pointer by 8 to store next samples */
-    pDst += 8u;
-
-    /* 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 */
-  blkCnt = numSamples;
-
-#endif /* #ifndef ARM_MATH_CM0_FAMILY */
-
-  while(blkCnt > 0u)
-  {
-    /* realOut + j (imagOut) = realIn + j (-1) imagIn */
-    /* Calculate Complex Conjugate and then store the results in the destination buffer. */
-    *pDst++ = *pSrc++;
-    *pDst++ = -*pSrc++;
-
-    /* Decrement the loop counter */
-    blkCnt--;
-  }
-}
-
-/**        
- * @} end of cmplx_conj group        
- */