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OpenBLAS/interface/gbmv.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>
#include "common.h"
#ifdef FUNCTION_PROFILE
#include "functable.h"
#endif
#ifdef XDOUBLE
#define ERROR_NAME "QGBMV "
#elif defined(DOUBLE)
#define ERROR_NAME "DGBMV "
#else
#define ERROR_NAME "SGBMV "
#endif
static void (*gbmv[])(BLASLONG, BLASLONG, BLASLONG, BLASLONG, FLOAT,
FLOAT *, BLASLONG, FLOAT *, BLASLONG, FLOAT *, BLASLONG, void *) = {
#ifdef XDOUBLE
qgbmv_n, qgbmv_t,
#elif defined(DOUBLE)
dgbmv_n, dgbmv_t,
#else
sgbmv_n, sgbmv_t,
#endif
};
#ifdef SMP
static int (*gbmv_thread[])(BLASLONG, BLASLONG, BLASLONG, BLASLONG, FLOAT,
FLOAT *, BLASLONG, FLOAT *, BLASLONG, FLOAT *, BLASLONG, FLOAT *, int) = {
#ifdef XDOUBLE
qgbmv_thread_n, qgbmv_thread_t,
#elif defined(DOUBLE)
dgbmv_thread_n, dgbmv_thread_t,
#else
sgbmv_thread_n, sgbmv_thread_t,
#endif
};
#endif
#ifndef CBLAS
void NAME(char *TRANS, blasint *M, blasint *N,
blasint *KU, blasint *KL,
FLOAT *ALPHA, FLOAT *a, blasint *LDA,
FLOAT *x, blasint *INCX,
FLOAT *BETA, FLOAT *y, blasint *INCY){
char trans = *TRANS;
blasint m = *M;
blasint n = *N;
blasint ku = *KU;
blasint kl = *KL;
blasint lda = *LDA;
blasint incx = *INCX;
blasint incy = *INCY;
FLOAT *buffer;
#ifdef SMP
int nthreads;
#endif
FLOAT alpha = *ALPHA;
FLOAT beta = *BETA;
blasint info;
blasint lenx, leny;
blasint i;
PRINT_DEBUG_NAME;
TOUPPER(trans);
info = 0;
i = -1;
if (trans == 'N') i = 0;
if (trans == 'T') i = 1;
if (trans == 'R') i = 0;
if (trans == 'C') i = 1;
if (incy == 0) info = 13;
if (incx == 0) info = 10;
if (lda < kl + ku + 1) info = 8;
if (kl < 0) info = 5;
if (ku < 0) info = 4;
if (n < 0) info = 3;
if (m < 0) info = 2;
if (i < 0) info = 1;
trans = i;
if (info != 0){
BLASFUNC(xerbla)(ERROR_NAME, &info, sizeof(ERROR_NAME));
return;
}
#else
void CNAME(enum CBLAS_ORDER order,
enum CBLAS_TRANSPOSE TransA,
blasint m, blasint n,
blasint ku, blasint kl,
FLOAT alpha,
FLOAT *a, blasint lda,
FLOAT *x, blasint incx,
FLOAT beta,
FLOAT *y, blasint incy){
FLOAT *buffer;
blasint lenx, leny, info, t;
int trans;
#ifdef SMP
int nthreads;
#endif
PRINT_DEBUG_CNAME;
trans = -1;
info = 0;
if (order == CblasColMajor) {
if (TransA == CblasNoTrans) trans = 0;
if (TransA == CblasTrans) trans = 1;
if (TransA == CblasConjNoTrans) trans = 0;
if (TransA == CblasConjTrans) trans = 1;
info = -1;
if (incy == 0) info = 13;
if (incx == 0) info = 10;
if (lda < kl + ku + 1) info = 8;
if (kl < 0) info = 5;
if (ku < 0) info = 4;
if (n < 0) info = 3;
if (m < 0) info = 2;
if (trans < 0) info = 1;
}
if (order == CblasRowMajor) {
if (TransA == CblasNoTrans) trans = 1;
if (TransA == CblasTrans) trans = 0;
if (TransA == CblasConjNoTrans) trans = 1;
if (TransA == CblasConjTrans) trans = 0;
info = -1;
t = n;
n = m;
m = t;
t = ku;
ku = kl;
kl = t;
if (incy == 0) info = 13;
if (incx == 0) info = 10;
if (lda < kl + ku + 1) info = 8;
if (kl < 0) info = 5;
if (ku < 0) info = 4;
if (n < 0) info = 3;
if (m < 0) info = 2;
if (trans < 0) info = 1;
}
if (info >= 0) {
BLASFUNC(xerbla)(ERROR_NAME, &info, sizeof(ERROR_NAME));
return;
}
#endif
if ((m==0) || (n==0)) return;
lenx = n;
leny = m;
if (trans) lenx = m;
if (trans) leny = n;
if (beta != ONE) SCAL_K(leny, 0, 0, beta, y, blasabs(incy), NULL, 0, NULL, 0);
if (alpha == ZERO) return;
IDEBUG_START;
FUNCTION_PROFILE_START();
if (incx < 0) x -= (lenx-1)*incx;
if (incy < 0) y -= (leny-1)*incy;
buffer = (FLOAT *)blas_memory_alloc(1);
#ifdef SMP
nthreads = num_cpu_avail(2);
if (nthreads == 1) {
#endif
(gbmv[(int)trans])(m, n, kl, ku, alpha, a, lda, x, incx, y, incy, buffer);
#ifdef SMP
} else {
(gbmv_thread[(int)trans])(m, n, kl, ku, alpha, a, lda, x, incx, y, incy, buffer, nthreads);
}
#endif
blas_memory_free(buffer);
FUNCTION_PROFILE_END(1, m * n / 2 + n, m * n);
IDEBUG_END;
return;
}
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