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Merge pull request #1804 from fenrus75/sgemm 

Add a C+intrinsics version of the SGEMM/skylakex kernel
tags/v0.3.4
Martin Kroeker GitHub 7 years ago
parent
065763adde d4bad73834
commit
d0e83666ad
No known key found for this signature in database GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 2470 additions and 0 deletions
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  1. +150
    -0
      kernel/x86_64/sgemm_beta_skylakex.c
  2. +1726
    -0
      kernel/x86_64/sgemm_kernel_16x4_skylakex.c
  3. +207
    -0
      kernel/x86_64/sgemm_ncopy_4_skylakex.c
  4. +387
    -0
      kernel/x86_64/sgemm_tcopy_16_skylakex.c

+ 150
- 0
kernel/x86_64/sgemm_beta_skylakex.c View File

@@ -0,0 +1,150 @@
/*********************************************************************/
/* 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 "common.h"

#include <immintrin.h>

int CNAME(BLASLONG m, BLASLONG n, BLASLONG dummy1, FLOAT beta,
FLOAT *dummy2, BLASLONG dummy3, FLOAT *dummy4, BLASLONG dummy5,
FLOAT *c, BLASLONG ldc){

BLASLONG i, j;
FLOAT *c_offset1, *c_offset;
FLOAT ctemp1, ctemp2, ctemp3, ctemp4;
FLOAT ctemp5, ctemp6, ctemp7, ctemp8;

/* fast path.. just zero the whole matrix */
if (m == ldc && (unsigned long)beta == (unsigned long)ZERO) {
memset(c, 0, m * n * sizeof(FLOAT));
return 0;
}


c_offset = c;

if (beta == ZERO){
__m512 z_zero;

z_zero = _mm512_setzero_ps();
j = n;
do {
c_offset1 = c_offset;
c_offset += ldc;

i = m;

while (i > 32) {
_mm512_storeu_ps(c_offset1, z_zero);
_mm512_storeu_ps(c_offset1 + 8, z_zero);
_mm512_storeu_ps(c_offset1 + 16, z_zero);
_mm512_storeu_ps(c_offset1 + 24 , z_zero);
c_offset1 += 32;
i -= 32;
}
while (i > 8) {
_mm512_storeu_ps(c_offset1, z_zero);
c_offset1 += 8;
i -= 8;
}

while (i > 0) {
*c_offset1 = ZERO;
c_offset1 ++;
i --;
}
j --;
} while (j > 0);

} else {

j = n;
do {
c_offset1 = c_offset;
c_offset += ldc;

i = (m >> 3);
if (i > 0){
do {
ctemp1 = *(c_offset1 + 0);
ctemp2 = *(c_offset1 + 1);
ctemp3 = *(c_offset1 + 2);
ctemp4 = *(c_offset1 + 3);
ctemp5 = *(c_offset1 + 4);
ctemp6 = *(c_offset1 + 5);
ctemp7 = *(c_offset1 + 6);
ctemp8 = *(c_offset1 + 7);

ctemp1 *= beta;
ctemp2 *= beta;
ctemp3 *= beta;
ctemp4 *= beta;
ctemp5 *= beta;
ctemp6 *= beta;
ctemp7 *= beta;
ctemp8 *= beta;

*(c_offset1 + 0) = ctemp1;
*(c_offset1 + 1) = ctemp2;
*(c_offset1 + 2) = ctemp3;
*(c_offset1 + 3) = ctemp4;
*(c_offset1 + 4) = ctemp5;
*(c_offset1 + 5) = ctemp6;
*(c_offset1 + 6) = ctemp7;
*(c_offset1 + 7) = ctemp8;
c_offset1 += 8;
i --;
} while (i > 0);
}

i = (m & 7);
if (i > 0){
do {
ctemp1 = *c_offset1;
ctemp1 *= beta;
*c_offset1 = ctemp1;
c_offset1 ++;
i --;
} while (i > 0);
}
j --;
} while (j > 0);

}
return 0;
};

+ 1726
- 0
kernel/x86_64/sgemm_kernel_16x4_skylakex.c
File diff suppressed because it is too large
View File


+ 207
- 0
kernel/x86_64/sgemm_ncopy_4_skylakex.c View File

@@ -0,0 +1,207 @@
/*********************************************************************/
/* 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>
#include "common.h"

#include <immintrin.h>


int CNAME(BLASLONG m, BLASLONG n, FLOAT * __restrict a, BLASLONG lda, FLOAT * __restrict b){
BLASLONG i, j;

FLOAT *a_offset, *a_offset1, *a_offset2, *a_offset3, *a_offset4;
FLOAT *b_offset;
FLOAT ctemp1, ctemp2, ctemp3, ctemp4;
FLOAT ctemp5, ctemp6, ctemp7, ctemp8;
FLOAT ctemp9, ctemp10, ctemp11, ctemp12;
FLOAT 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{
__m128 row0, row1, row2, row3;

row0 = _mm_loadu_ps(a_offset1);
row1 = _mm_loadu_ps(a_offset2);
row2 = _mm_loadu_ps(a_offset3);
row3 = _mm_loadu_ps(a_offset4);

_MM_TRANSPOSE4_PS(row0, row1, row2, row3);

_mm_storeu_ps(b_offset + 0, row0);
_mm_storeu_ps(b_offset + 4, row1);
_mm_storeu_ps(b_offset + 8, row2);
_mm_storeu_ps(b_offset + 12, row3);

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;
}

+ 387
- 0
kernel/x86_64/sgemm_tcopy_16_skylakex.c View File

@@ -0,0 +1,387 @@
/*********************************************************************/
/* 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>
#include "common.h"

int CNAME(BLASLONG m, BLASLONG n, FLOAT * __restrict a, BLASLONG lda, FLOAT * __restrict b){

BLASLONG i, j;

FLOAT *aoffset;
FLOAT *aoffset1, *aoffset2;
FLOAT *boffset;

FLOAT ctemp01, ctemp02, ctemp03, ctemp04;
FLOAT ctemp05, ctemp06, ctemp07, ctemp08;
FLOAT ctemp09, ctemp10, ctemp11, ctemp12;
FLOAT ctemp13, ctemp14, ctemp15, ctemp16;
FLOAT ctemp17, ctemp18, ctemp19, ctemp20;
FLOAT ctemp21, ctemp22, ctemp23, ctemp24;
FLOAT ctemp25, ctemp26, ctemp27, ctemp28;
FLOAT ctemp29, ctemp30, ctemp31, ctemp32;

aoffset = a;
boffset = b;

#if 0
fprintf(stderr, "m = %d n = %d\n", m, n);
#endif

j = (n >> 4);
if (j > 0){
do{
aoffset1 = aoffset;
aoffset2 = aoffset + lda;
aoffset += 16;

i = (m >> 1);
if (i > 0){
do{
ctemp01 = *(aoffset1 + 0);
ctemp02 = *(aoffset1 + 1);
ctemp03 = *(aoffset1 + 2);
ctemp04 = *(aoffset1 + 3);
ctemp05 = *(aoffset1 + 4);
ctemp06 = *(aoffset1 + 5);
ctemp07 = *(aoffset1 + 6);
ctemp08 = *(aoffset1 + 7);
ctemp09 = *(aoffset1 + 8);
ctemp10 = *(aoffset1 + 9);
ctemp11 = *(aoffset1 + 10);
ctemp12 = *(aoffset1 + 11);
ctemp13 = *(aoffset1 + 12);
ctemp14 = *(aoffset1 + 13);
ctemp15 = *(aoffset1 + 14);
ctemp16 = *(aoffset1 + 15);

ctemp17 = *(aoffset2 + 0);
ctemp18 = *(aoffset2 + 1);
ctemp19 = *(aoffset2 + 2);
ctemp20 = *(aoffset2 + 3);
ctemp21 = *(aoffset2 + 4);
ctemp22 = *(aoffset2 + 5);
ctemp23 = *(aoffset2 + 6);
ctemp24 = *(aoffset2 + 7);
ctemp25 = *(aoffset2 + 8);
ctemp26 = *(aoffset2 + 9);
ctemp27 = *(aoffset2 + 10);
ctemp28 = *(aoffset2 + 11);
ctemp29 = *(aoffset2 + 12);
ctemp30 = *(aoffset2 + 13);
ctemp31 = *(aoffset2 + 14);
ctemp32 = *(aoffset2 + 15);

*(boffset + 0) = ctemp01;
*(boffset + 1) = ctemp02;
*(boffset + 2) = ctemp03;
*(boffset + 3) = ctemp04;
*(boffset + 4) = ctemp05;
*(boffset + 5) = ctemp06;
*(boffset + 6) = ctemp07;
*(boffset + 7) = ctemp08;

*(boffset + 8) = ctemp09;
*(boffset + 9) = ctemp10;
*(boffset + 10) = ctemp11;
*(boffset + 11) = ctemp12;
*(boffset + 12) = ctemp13;
*(boffset + 13) = ctemp14;
*(boffset + 14) = ctemp15;
*(boffset + 15) = ctemp16;

*(boffset + 16) = ctemp17;
*(boffset + 17) = ctemp18;
*(boffset + 18) = ctemp19;
*(boffset + 19) = ctemp20;
*(boffset + 20) = ctemp21;
*(boffset + 21) = ctemp22;
*(boffset + 22) = ctemp23;
*(boffset + 23) = ctemp24;

*(boffset + 24) = ctemp25;
*(boffset + 25) = ctemp26;
*(boffset + 26) = ctemp27;
*(boffset + 27) = ctemp28;
*(boffset + 28) = ctemp29;
*(boffset + 29) = ctemp30;
*(boffset + 30) = ctemp31;
*(boffset + 31) = ctemp32;

aoffset1 += 2 * lda;
aoffset2 += 2 * lda;
boffset += 32;

i --;
}while(i > 0);
}

if (m & 1){
ctemp01 = *(aoffset1 + 0);
ctemp02 = *(aoffset1 + 1);
ctemp03 = *(aoffset1 + 2);
ctemp04 = *(aoffset1 + 3);
ctemp05 = *(aoffset1 + 4);
ctemp06 = *(aoffset1 + 5);
ctemp07 = *(aoffset1 + 6);
ctemp08 = *(aoffset1 + 7);
ctemp09 = *(aoffset1 + 8);
ctemp10 = *(aoffset1 + 9);
ctemp11 = *(aoffset1 + 10);
ctemp12 = *(aoffset1 + 11);
ctemp13 = *(aoffset1 + 12);
ctemp14 = *(aoffset1 + 13);
ctemp15 = *(aoffset1 + 14);
ctemp16 = *(aoffset1 + 15);

*(boffset + 0) = ctemp01;
*(boffset + 1) = ctemp02;
*(boffset + 2) = ctemp03;
*(boffset + 3) = ctemp04;
*(boffset + 4) = ctemp05;
*(boffset + 5) = ctemp06;
*(boffset + 6) = ctemp07;
*(boffset + 7) = ctemp08;

*(boffset + 8) = ctemp09;
*(boffset + 9) = ctemp10;
*(boffset + 10) = ctemp11;
*(boffset + 11) = ctemp12;
*(boffset + 12) = ctemp13;
*(boffset + 13) = ctemp14;
*(boffset + 14) = ctemp15;
*(boffset + 15) = ctemp16;

boffset += 16;
}

j--;
}while(j > 0);
} /* end of if(j > 0) */

if (n & 8){
aoffset1 = aoffset;
aoffset2 = aoffset + lda;
aoffset += 8;

i = (m >> 1);
if (i > 0){
do{
ctemp01 = *(aoffset1 + 0);
ctemp02 = *(aoffset1 + 1);
ctemp03 = *(aoffset1 + 2);
ctemp04 = *(aoffset1 + 3);
ctemp05 = *(aoffset1 + 4);
ctemp06 = *(aoffset1 + 5);
ctemp07 = *(aoffset1 + 6);
ctemp08 = *(aoffset1 + 7);

ctemp09 = *(aoffset2 + 0);
ctemp10 = *(aoffset2 + 1);
ctemp11 = *(aoffset2 + 2);
ctemp12 = *(aoffset2 + 3);
ctemp13 = *(aoffset2 + 4);
ctemp14 = *(aoffset2 + 5);
ctemp15 = *(aoffset2 + 6);
ctemp16 = *(aoffset2 + 7);

*(boffset + 0) = ctemp01;
*(boffset + 1) = ctemp02;
*(boffset + 2) = ctemp03;
*(boffset + 3) = ctemp04;
*(boffset + 4) = ctemp05;
*(boffset + 5) = ctemp06;
*(boffset + 6) = ctemp07;
*(boffset + 7) = ctemp08;

*(boffset + 8) = ctemp09;
*(boffset + 9) = ctemp10;
*(boffset + 10) = ctemp11;
*(boffset + 11) = ctemp12;
*(boffset + 12) = ctemp13;
*(boffset + 13) = ctemp14;
*(boffset + 14) = ctemp15;
*(boffset + 15) = ctemp16;

aoffset1 += 2 * lda;
aoffset2 += 2 * lda;
boffset += 16;

i --;
}while(i > 0);
}

if (m & 1){
ctemp01 = *(aoffset1 + 0);
ctemp02 = *(aoffset1 + 1);
ctemp03 = *(aoffset1 + 2);
ctemp04 = *(aoffset1 + 3);
ctemp05 = *(aoffset1 + 4);
ctemp06 = *(aoffset1 + 5);
ctemp07 = *(aoffset1 + 6);
ctemp08 = *(aoffset1 + 7);

*(boffset + 0) = ctemp01;
*(boffset + 1) = ctemp02;
*(boffset + 2) = ctemp03;
*(boffset + 3) = ctemp04;
*(boffset + 4) = ctemp05;
*(boffset + 5) = ctemp06;
*(boffset + 6) = ctemp07;
*(boffset + 7) = ctemp08;

boffset += 8;
}
}

if (n & 4){
aoffset1 = aoffset;
aoffset2 = aoffset + lda;
aoffset += 4;

i = (m >> 1);
if (i > 0){
do{
ctemp01 = *(aoffset1 + 0);
ctemp02 = *(aoffset1 + 1);
ctemp03 = *(aoffset1 + 2);
ctemp04 = *(aoffset1 + 3);

ctemp05 = *(aoffset2 + 0);
ctemp06 = *(aoffset2 + 1);
ctemp07 = *(aoffset2 + 2);
ctemp08 = *(aoffset2 + 3);

*(boffset + 0) = ctemp01;
*(boffset + 1) = ctemp02;
*(boffset + 2) = ctemp03;
*(boffset + 3) = ctemp04;
*(boffset + 4) = ctemp05;
*(boffset + 5) = ctemp06;
*(boffset + 6) = ctemp07;
*(boffset + 7) = ctemp08;

aoffset1 += 2 * lda;
aoffset2 += 2 * lda;
boffset += 8;

i --;
}while(i > 0);
}

if (m & 1){
ctemp01 = *(aoffset1 + 0);
ctemp02 = *(aoffset1 + 1);
ctemp03 = *(aoffset1 + 2);
ctemp04 = *(aoffset1 + 3);

*(boffset + 0) = ctemp01;
*(boffset + 1) = ctemp02;
*(boffset + 2) = ctemp03;
*(boffset + 3) = ctemp04;

boffset += 4;
}
}

if (n & 2){
aoffset1 = aoffset;
aoffset2 = aoffset + lda;
aoffset += 2;

i = (m >> 1);
if (i > 0){
do{
ctemp01 = *(aoffset1 + 0);
ctemp02 = *(aoffset1 + 1);
ctemp03 = *(aoffset2 + 0);
ctemp04 = *(aoffset2 + 1);

*(boffset + 0) = ctemp01;
*(boffset + 1) = ctemp02;
*(boffset + 2) = ctemp03;
*(boffset + 3) = ctemp04;

aoffset1 += 2 * lda;
aoffset2 += 2 * lda;
boffset += 4;

i --;
}while(i > 0);
}

if (m & 1){
ctemp01 = *(aoffset1 + 0);
ctemp02 = *(aoffset1 + 1);

*(boffset + 0) = ctemp01;
*(boffset + 1) = ctemp02;
boffset += 2;
}
}

if (n & 1){
aoffset1 = aoffset;
aoffset2 = aoffset + lda;

i = (m >> 1);
if (i > 0){
do{
ctemp01 = *(aoffset1 + 0);
ctemp02 = *(aoffset2 + 0);

*(boffset + 0) = ctemp01;
*(boffset + 1) = ctemp02;

aoffset1 += 2 * lda;
aoffset2 += 2 * lda;
boffset += 2;

i --;
}while(i > 0);
}

if (m & 1){
ctemp01 = *(aoffset1 + 0);
*(boffset + 0) = ctemp01;
// boffset += 1;
}
}

return 0;
}

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