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R31/dgemm-neon/gemm_ncopy_4.c
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gemm_ncopy_4.c
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/*********************************************************************/
/* Copyright 2009, 2010 The University of Texas at Austin. */
/* All rights reserved. */
/* */
/* Redistribution and use in source and binary forms, with or */
/* without modification, are permitted provided that the following */
/* conditions are met: */
/* */
/* 1. Redistributions of source code must retain the above */
/* copyright notice, this list of conditions and the following */
/* disclaimer. */
/* */
/* 2. 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. */
/* */
/* THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY OF TEXAS AT */
/* AUSTIN ``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 UNIVERSITY OF TEXAS AT */
/* AUSTIN 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. */
/* */
/* The views and conclusions contained in the software and */
/* documentation are those of the authors and should not be */
/* interpreted as representing official policies, either expressed */
/* or implied, of The University of Texas at Austin. */
/*********************************************************************/
#include <stdio.h>
int ncopy_4(int m, int n, double *a, int lda, double *b){
int i, j;
double *a_offset, *a_offset1, *a_offset2, *a_offset3, *a_offset4;
double *b_offset;
double ctemp1, ctemp2, ctemp3, ctemp4;
double ctemp5, ctemp6, ctemp7, ctemp8;
double ctemp9, ctemp10, ctemp11, ctemp12;
double ctemp13, ctemp14, ctemp15, ctemp16;
a_offset = a;
b_offset = b;
j = (n >> 2);
if (j > 0){
do{
a_offset1 = a_offset;
a_offset2 = a_offset1 + lda;
a_offset3 = a_offset2 + lda;
a_offset4 = a_offset3 + lda;
a_offset += 4 * lda;
i = (m >> 2);
if (i > 0){
do{
ctemp1 = *(a_offset1 + 0);
ctemp2 = *(a_offset1 + 1);
ctemp3 = *(a_offset1 + 2);
ctemp4 = *(a_offset1 + 3);
ctemp5 = *(a_offset2 + 0);
ctemp6 = *(a_offset2 + 1);
ctemp7 = *(a_offset2 + 2);
ctemp8 = *(a_offset2 + 3);
ctemp9 = *(a_offset3 + 0);
ctemp10 = *(a_offset3 + 1);
ctemp11 = *(a_offset3 + 2);
ctemp12 = *(a_offset3 + 3);
ctemp13 = *(a_offset4 + 0);
ctemp14 = *(a_offset4 + 1);
ctemp15 = *(a_offset4 + 2);
ctemp16 = *(a_offset4 + 3);
*(b_offset + 0) = ctemp1;
*(b_offset + 1) = ctemp5;
*(b_offset + 2) = ctemp9;
*(b_offset + 3) = ctemp13;
*(b_offset + 4) = ctemp2;
*(b_offset + 5) = ctemp6;
*(b_offset + 6) = ctemp10;
*(b_offset + 7) = ctemp14;
*(b_offset + 8) = ctemp3;
*(b_offset + 9) = ctemp7;
*(b_offset + 10) = ctemp11;
*(b_offset + 11) = ctemp15;
*(b_offset + 12) = ctemp4;
*(b_offset + 13) = ctemp8;
*(b_offset + 14) = ctemp12;
*(b_offset + 15) = ctemp16;
a_offset1 += 4;
a_offset2 += 4;
a_offset3 += 4;
a_offset4 += 4;
b_offset += 16;
i --;
}while(i > 0);
}
i = (m & 3);
if (i > 0){
do{
ctemp1 = *(a_offset1 + 0);
ctemp5 = *(a_offset2 + 0);
ctemp9 = *(a_offset3 + 0);
ctemp13 = *(a_offset4 + 0);
*(b_offset + 0) = ctemp1;
*(b_offset + 1) = ctemp5;
*(b_offset + 2) = ctemp9;
*(b_offset + 3) = ctemp13;
a_offset1 ++;
a_offset2 ++;
a_offset3 ++;
a_offset4 ++;
b_offset += 4;
i --;
}while(i > 0);
}
j--;
}while(j > 0);
} /* end of if(j > 0) */
if (n & 2){
a_offset1 = a_offset;
a_offset2 = a_offset1 + lda;
a_offset += 2 * lda;
i = (m >> 2);
if (i > 0){
do{
ctemp1 = *(a_offset1 + 0);
ctemp2 = *(a_offset1 + 1);
ctemp3 = *(a_offset1 + 2);
ctemp4 = *(a_offset1 + 3);
ctemp5 = *(a_offset2 + 0);
ctemp6 = *(a_offset2 + 1);
ctemp7 = *(a_offset2 + 2);
ctemp8 = *(a_offset2 + 3);
*(b_offset + 0) = ctemp1;
*(b_offset + 1) = ctemp5;
*(b_offset + 2) = ctemp2;
*(b_offset + 3) = ctemp6;
*(b_offset + 4) = ctemp3;
*(b_offset + 5) = ctemp7;
*(b_offset + 6) = ctemp4;
*(b_offset + 7) = ctemp8;
a_offset1 += 4;
a_offset2 += 4;
b_offset += 8;
i --;
}while(i > 0);
}
i = (m & 3);
if (i > 0){
do{
ctemp1 = *(a_offset1 + 0);
ctemp5 = *(a_offset2 + 0);
*(b_offset + 0) = ctemp1;
*(b_offset + 1) = ctemp5;
a_offset1 ++;
a_offset2 ++;
b_offset += 2;
i --;
}while(i > 0);
}
} /* end of if(j > 0) */
if (n & 1){
a_offset1 = a_offset;
i = (m >> 2);
if (i > 0){
do{
ctemp1 = *(a_offset1 + 0);
ctemp2 = *(a_offset1 + 1);
ctemp3 = *(a_offset1 + 2);
ctemp4 = *(a_offset1 + 3);
*(b_offset + 0) = ctemp1;
*(b_offset + 1) = ctemp2;
*(b_offset + 2) = ctemp3;
*(b_offset + 3) = ctemp4;
a_offset1 += 4;
b_offset += 4;
i --;
}while(i > 0);
}
i = (m & 3);
if (i > 0){
do{
ctemp1 = *(a_offset1 + 0);
*(b_offset + 0) = ctemp1;
a_offset1 ++;
b_offset += 1;
i --;
}while(i > 0);
}
} /* end of if(j > 0) */
return 0;
}
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