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OpenBLAS/interface/zgemv.c
Martin Kroeker 2c222f1faa Modify complex CBLAS functions to take void pointers 
Modify complex CBLAS functions to take void pointers instead of float or double arguments (to bring the prototypes in line with netlib and other implementations' cblas.h)
2017-11-05 15:53:14 +01:00

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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 "XGEMV "
#elif defined(DOUBLE)
#define ERROR_NAME "ZGEMV "
#else
#define ERROR_NAME "CGEMV "
#endif
#ifdef SMP
static int (*gemv_thread[])(BLASLONG, BLASLONG, FLOAT *, FLOAT *, BLASLONG, FLOAT * , BLASLONG, FLOAT *, BLASLONG, FLOAT *, int) = {
#ifdef XDOUBLE
xgemv_thread_n, xgemv_thread_t, xgemv_thread_r, xgemv_thread_c, xgemv_thread_o, xgemv_thread_u, xgemv_thread_s, xgemv_thread_d,
#elif defined DOUBLE
zgemv_thread_n, zgemv_thread_t, zgemv_thread_r, zgemv_thread_c, zgemv_thread_o, zgemv_thread_u, zgemv_thread_s, zgemv_thread_d,
#else
cgemv_thread_n, cgemv_thread_t, cgemv_thread_r, cgemv_thread_c, cgemv_thread_o, cgemv_thread_u, cgemv_thread_s, cgemv_thread_d,
#endif
};
#endif
#ifndef CBLAS
void NAME(char *TRANS, blasint *M, blasint *N,
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 lda = *LDA;
blasint incx = *INCX;
blasint incy = *INCY;
FLOAT *buffer;
int buffer_size;
#ifdef SMP
int nthreads;
#endif
int (*gemv[])(BLASLONG, BLASLONG, BLASLONG, FLOAT, FLOAT, FLOAT *, BLASLONG,
FLOAT * , BLASLONG, FLOAT *, BLASLONG, FLOAT *) = {
GEMV_N, GEMV_T, GEMV_R, GEMV_C,
GEMV_O, GEMV_U, GEMV_S, GEMV_D,
};
blasint info;
blasint lenx, leny;
blasint i;
FLOAT alpha_r = *(ALPHA + 0);
FLOAT alpha_i = *(ALPHA + 1);
FLOAT beta_r = *(BETA + 0);
FLOAT beta_i = *(BETA + 1);
PRINT_DEBUG_NAME;
TOUPPER(trans);
info = 0;
i = -1;
if (trans == 'N') i = 0;
if (trans == 'T') i = 1;
if (trans == 'R') i = 2;
if (trans == 'C') i = 3;
if (trans == 'O') i = 4;
if (trans == 'U') i = 5;
if (trans == 'S') i = 6;
if (trans == 'D') i = 7;
if (incy == 0) info = 11;
if (incx == 0) info = 8;
if (lda < MAX(1,m)) info = 6;
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,
void *VALPHA,
void *va, blasint lda,
void *vx, blasint incx,
void *VBETA,
void *vy, blasint incy){
FLOAT *ALPHA = (FLOAT*) VALPHA;
FLOAT *a = (FLOAT*) va;
FLOAT *x = (FLOAT*) vx;
FLOAT *BETA = (FLOAT*) VBETA;
FLOAT *y = (FLOAT*) vy;
FLOAT *buffer;
blasint lenx, leny;
int trans, buffer_size;
blasint info, t;
#ifdef SMP
int nthreads;
#endif
int (*gemv[])(BLASLONG, BLASLONG, BLASLONG, FLOAT, FLOAT, FLOAT *, BLASLONG,
FLOAT * , BLASLONG, FLOAT *, BLASLONG, FLOAT *) = {
GEMV_N, GEMV_T, GEMV_R, GEMV_C,
GEMV_O, GEMV_U, GEMV_S, GEMV_D,
};
FLOAT alpha_r = *(ALPHA + 0);
FLOAT alpha_i = *(ALPHA + 1);
FLOAT beta_r = *(BETA + 0);
FLOAT beta_i = *(BETA + 1);
PRINT_DEBUG_CNAME;
trans = -1;
info = 0;
if (order == CblasColMajor) {
if (TransA == CblasNoTrans) trans = 0;
if (TransA == CblasTrans) trans = 1;
if (TransA == CblasConjNoTrans) trans = 2;
if (TransA == CblasConjTrans) trans = 3;
info = -1;
if (incy == 0) info = 11;
if (incx == 0) info = 8;
if (lda < MAX(1, m)) info = 6;
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 = 3;
if (TransA == CblasConjTrans) trans = 2;
info = -1;
t = n;
n = m;
m = t;
if (incy == 0) info = 11;
if (incx == 0) info = 8;
if (lda < MAX(1, m)) info = 6;
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
/* Quick return if possible. */
if (m == 0 || n == 0) return;
lenx = n;
leny = m;
if (trans & 1) lenx = m;
if (trans & 1) leny = n;
if (beta_r != ONE || beta_i != ZERO) SCAL_K(leny, 0, 0, beta_r, beta_i, y, abs(incy), NULL, 0, NULL, 0);
if (alpha_r == ZERO && alpha_i == ZERO) return;
IDEBUG_START;
FUNCTION_PROFILE_START();
if (incx < 0) x -= (lenx - 1) * incx * 2;
if (incy < 0) y -= (leny - 1) * incy * 2;
buffer_size = 2 * (m + n) + 128 / sizeof(FLOAT);
#ifdef WINDOWS_ABI
buffer_size += 160 / sizeof(FLOAT) ;
#endif
// for alignment
buffer_size = (buffer_size + 3) & ~3;
STACK_ALLOC(buffer_size, FLOAT, buffer);
#if defined(ARCH_X86_64) && defined(MAX_STACK_ALLOC) && MAX_STACK_ALLOC > 0
// cgemv_t.S return NaN if there are NaN or Inf in the buffer (see bug #746)
if(trans && stack_alloc_size)
memset(buffer, 0, MIN(BUFFER_SIZE, sizeof(FLOAT) * buffer_size));
#endif
#ifdef SMP
if ( 1L * m * n < 1024L * GEMM_MULTITHREAD_THRESHOLD )
nthreads = 1;
else
nthreads = num_cpu_avail(2);
if (nthreads == 1) {
#endif
(gemv[(int)trans])(m, n, 0, alpha_r, alpha_i, a, lda, x, incx, y, incy, buffer);
#ifdef SMP
} else {
(gemv_thread[(int)trans])(m, n, ALPHA, a, lda, x, incx, y, incy, buffer, nthreads);
}
#endif
STACK_FREE(buffer);
FUNCTION_PROFILE_END(4, m * n + m + n, 2 * m * n);
IDEBUG_END;
return;
}
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