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/*********************************************************************/
/* Copyright 2009, 2010 The University of Texas at Austin. */
/* Copyright 2025 The OpenBLAS Project. */
/* 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"
#if defined(BFLOAT16) && defined(BGEMM) && defined(BFLOAT16CONVERSION)
static float
bfloat16tof32 (bfloat16 f16)
{
float result = 0;
unsigned short* q = (unsigned short*)(&result);
#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
q[0] = f16;
#else
q[1] = f16;
#endif
return result;
}
static bfloat16
f32tobfloat16(float f32)
{
unsigned short* q = (unsigned short*)(&f32);
#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
return q[0];
#else
return q[1];
#endif
}
#define BF16TOF32(x) (bfloat16tof32(x))
#define F32TOBF16(x) (f32tobfloat16(x))
#else
#define BF16TOF32(x) x
#define F32TOBF16(x) x
#endif
int CNAME(BLASLONG m, BLASLONG n, BLASLONG dummy1, FLOAT beta,
IFLOAT *dummy2, BLASLONG dummy3, IFLOAT *dummy4, BLASLONG dummy5,
FLOAT *c, BLASLONG ldc){
BLASLONG i, j;
BLASLONG chunk, remain;
FLOAT *c_offset1, *c_offset;
c_offset = c;
chunk = m >> 3;
remain = m & 7;
if (beta == ZERO){
for(j=n; j>0; j--){
c_offset1 = c_offset;
c_offset += ldc;
for(i=chunk; i>0; i--){
*(c_offset1 + 0) = F32TOBF16(ZERO);
*(c_offset1 + 1) = F32TOBF16(ZERO);
*(c_offset1 + 2) = F32TOBF16(ZERO);
*(c_offset1 + 3) = F32TOBF16(ZERO);
*(c_offset1 + 4) = F32TOBF16(ZERO);
*(c_offset1 + 5) = F32TOBF16(ZERO);
*(c_offset1 + 6) = F32TOBF16(ZERO);
*(c_offset1 + 7) = F32TOBF16(ZERO);
c_offset1 += 8;
}
for(i=remain; i>0; i--){
*c_offset1 = F32TOBF16(ZERO);
c_offset1 ++;
}
}
} else {
for(j=n; j>0; j--){
c_offset1 = c_offset;
c_offset += ldc;
for(i=chunk; i>0; i--){
*(c_offset1 + 0) = F32TOBF16(BF16TOF32(beta) * BF16TOF32(c_offset1[0]));
*(c_offset1 + 1) = F32TOBF16(BF16TOF32(beta) * BF16TOF32(c_offset1[1]));
*(c_offset1 + 2) = F32TOBF16(BF16TOF32(beta) * BF16TOF32(c_offset1[2]));
*(c_offset1 + 3) = F32TOBF16(BF16TOF32(beta) * BF16TOF32(c_offset1[3]));
*(c_offset1 + 4) = F32TOBF16(BF16TOF32(beta) * BF16TOF32(c_offset1[4]));
*(c_offset1 + 5) = F32TOBF16(BF16TOF32(beta) * BF16TOF32(c_offset1[5]));
*(c_offset1 + 6) = F32TOBF16(BF16TOF32(beta) * BF16TOF32(c_offset1[6]));
*(c_offset1 + 7) = F32TOBF16(BF16TOF32(beta) * BF16TOF32(c_offset1[7]));
c_offset1 += 8;
}
for(i=remain; i>0; i--){
*c_offset1 = F32TOBF16(BF16TOF32(beta) * BF16TOF32(c_offset1[0]));
c_offset1 ++;
}
}
}
return 0;
};
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