text: /* ----------------------------------------------------------------------    
  * Copyright (C) 2010-2013 ARM Limited. All rights reserved.    
  *    
  * $Date:        17. January 2013 
  * $Revision: 	V1.4.1  
  *    
  * Project: 	    CMSIS DSP Library    
  * Title:		arm_fill_q7.c    
  *    
  * Description:	Fills a constant value into a Q7 vector.   
  *    
  * 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 groupSupport    
   */
  
  /**    
   * @addtogroup Fill    
   * @{    
   */
  
  /**    
   * @brief Fills a constant value into a Q7 vector.    
   * @param[in]       value input value to be filled   
   * @param[out]      *pDst points to output vector    
   * @param[in]       blockSize length of the output vector   
   * @return none.    
   *    
   */
  
  void arm_fill_q7(
    q7_t value,
    q7_t * pDst,
    uint32_t blockSize)
  {
    uint32_t blkCnt;                               /* loop counter */
  
  #ifndef ARM_MATH_CM0_FAMILY
  
    /* Run the below code for Cortex-M4 and Cortex-M3 */
  
    q31_t packedValue;                             /* value packed to 32 bits */
  
    /*loop Unrolling */
    blkCnt = blockSize >> 2u;
  
    /* Packing four 8 bit values to 32 bit value in order to use SIMD */
    packedValue = __PACKq7(value, value, value, value);
  
    /* 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 = value */
      /* Fill the value in the destination buffer */
      *__SIMD32(pDst)++ = packedValue;
  
      /* Decrement the loop counter */
      blkCnt--;
    }
  
    /* If the blockSize is not a multiple of 4, compute any remaining output samples here.    
     ** No loop unrolling is used. */
    blkCnt = blockSize % 0x4u;
  
  #else
  
    /* Run the below code for Cortex-M0 */
  
    /* Loop over blockSize number of values */
    blkCnt = blockSize;
  
  #endif /* #ifndef ARM_MATH_CM0_FAMILY */
  
    while(blkCnt > 0u)
    {
      /* C = value */
      /* Fill the value in the destination buffer */
      *pDst++ = value;
  
      /* Decrement the loop counter */
      blkCnt--;
    }
  }
  
  /**    
   * @} end of Fill group    
   */
  