102 lines
4.0 KiB
C
102 lines
4.0 KiB
C
/***************************************************************************
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* Copyright (c) 2022, The OpenBLAS Project
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* All rights reserved.
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name of the OpenBLAS project nor the names of
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* its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBLAS PROJECT OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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* *****************************************************************************/
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#include "common.h"
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int CNAME(BLASLONG m, BLASLONG n, IFLOAT *a, BLASLONG lda, IFLOAT *b) {
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IFLOAT *a_offset, *a_offset1, *a_offset2;
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IFLOAT *b_offset;
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a_offset = a;
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b_offset = b;
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for (BLASLONG j = 0; j < n / 2; j++) {
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a_offset1 = a_offset;
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a_offset2 = a_offset1 + lda;
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a_offset += 2 * lda;
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for (BLASLONG i = 0; i < m / 4; i++) {
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*(b_offset + 0) = *(a_offset1 + 0);
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*(b_offset + 1) = *(a_offset1 + 1);
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*(b_offset + 2) = *(a_offset1 + 2);
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*(b_offset + 3) = *(a_offset1 + 3);
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*(b_offset + 4) = *(a_offset2 + 0);
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*(b_offset + 5) = *(a_offset2 + 1);
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*(b_offset + 6) = *(a_offset2 + 2);
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*(b_offset + 7) = *(a_offset2 + 3);
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a_offset1 += 4;
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a_offset2 += 4;
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b_offset += 8;
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}
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BLASLONG rest = m & 3;
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if (rest == 3) {
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*(b_offset + 0) = *(a_offset1 + 0);
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*(b_offset + 1) = *(a_offset1 + 1);
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*(b_offset + 2) = *(a_offset1 + 2);
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*(b_offset + 3) = *(a_offset2 + 0);
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*(b_offset + 4) = *(a_offset2 + 1);
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*(b_offset + 5) = *(a_offset2 + 2);
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b_offset += 6;
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} else if (rest == 2) {
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*(b_offset + 0) = *(a_offset1 + 0);
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*(b_offset + 1) = *(a_offset1 + 1);
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*(b_offset + 2) = *(a_offset2 + 0);
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*(b_offset + 3) = *(a_offset2 + 1);
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b_offset += 4;
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} else if (rest == 1) {
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*(b_offset + 0) = *(a_offset1 + 0);
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*(b_offset + 1) = *(a_offset2 + 0);
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b_offset += 2;
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}
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}
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if (n & 1) {
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for (BLASLONG i = 0; i < m / 4; i++) {
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*(b_offset + 0) = *(a_offset + 0);
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*(b_offset + 1) = *(a_offset + 1);
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*(b_offset + 2) = *(a_offset + 2);
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*(b_offset + 3) = *(a_offset + 3);
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b_offset += 4;
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a_offset += 4;
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}
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BLASLONG rest = m & 3;
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if (rest == 3) {
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*(b_offset + 0) = *(a_offset + 0);
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*(b_offset + 1) = *(a_offset + 1);
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*(b_offset + 2) = *(a_offset + 2);
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} else if (rest == 2) {
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*(b_offset + 0) = *(a_offset + 0);
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*(b_offset + 1) = *(a_offset + 1);
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} else if (rest == 1) {
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*(b_offset + 0) = *(a_offset + 0);
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}
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}
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return 0;
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}
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