1 /* ----------------------------------------------------------------------
2 * Copyright (C) 2010-2013 ARM Limited. All rights reserved.
4 * $Date: 17. January 2013
7 * Project: CMSIS DSP Library
10 * Description: Copies the elements of a Q7 vector.
12 * Target Processor: Cortex-M4/Cortex-M3/Cortex-M0
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
17 * - Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * - Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in
21 * the documentation and/or other materials provided with the
23 * - Neither the name of ARM LIMITED nor the names of its contributors
24 * may be used to endorse or promote products derived from this
25 * software without specific prior written permission.
27 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
28 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
29 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
30 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
31 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
32 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
33 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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38 * POSSIBILITY OF SUCH DAMAGE.
39 * -------------------------------------------------------------------- */
44 * @ingroup groupSupport
53 * @brief Copies the elements of a Q7 vector.
54 * @param[in] *pSrc points to input vector
55 * @param[out] *pDst points to output vector
56 * @param[in] blockSize length of the input vector
66 uint32_t blkCnt; /* loop counter */
68 #ifndef ARM_MATH_CM0_FAMILY
70 /* Run the below code for Cortex-M4 and Cortex-M3 */
73 blkCnt = blockSize >> 2u;
75 /* First part of the processing with loop unrolling. Compute 4 outputs at a time.
76 ** a second loop below computes the remaining 1 to 3 samples. */
80 /* Copy and then store the results in the destination buffer */
81 /* 4 samples are copied and stored at a time using SIMD */
82 *__SIMD32(pDst)++ = *__SIMD32(pSrc)++;
84 /* Decrement the loop counter */
88 /* If the blockSize is not a multiple of 4, compute any remaining output samples here.
89 ** No loop unrolling is used. */
90 blkCnt = blockSize % 0x4u;
94 /* Run the below code for Cortex-M0 */
96 /* Loop over blockSize number of values */
99 #endif /* #ifndef ARM_MATH_CM0_FAMILY */
105 /* Copy and then store the results in the destination buffer */
108 /* Decrement the loop counter */
114 * @} end of BasicCopy group