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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 <ctype.h>
#include "common.h"
#ifdef FUNCTION_PROFILE
#include "functable.h"
#endif
// this is smallest dimension N of square input a to permit threading
// see graph in issue #1820 for explanation
#define MULTI_THREAD_MINIMAL 362
#ifdef XDOUBLE
#define ERROR_NAME "XHEMV "
#elif defined(DOUBLE)
#define ERROR_NAME "ZHEMV "
#else
#define ERROR_NAME "CHEMV "
#endif
#ifndef CBLAS
void NAME(char *UPLO, blasint *N, FLOAT *ALPHA, FLOAT *a, blasint *LDA,
FLOAT *x, blasint *INCX, FLOAT *BETA, FLOAT *y, blasint *INCY){
char uplo_arg = *UPLO;
blasint n = *N;
FLOAT alpha_r = ALPHA[0];
FLOAT alpha_i = ALPHA[1];
blasint lda = *LDA;
blasint incx = *INCX;
FLOAT beta_r = BETA[0];
FLOAT beta_i = BETA[1];
blasint incy = *INCY;
#ifdef SMP
int nthreads;
#endif
int (*hemv[])(BLASLONG, BLASLONG, FLOAT, FLOAT, FLOAT *, BLASLONG, FLOAT *, BLASLONG, FLOAT *, BLASLONG, FLOAT *) = {
HEMV_U, HEMV_L, HEMV_V, HEMV_M,
};
#ifdef SMP
int (*hemv_thread[])(BLASLONG, FLOAT *, FLOAT *, BLASLONG, FLOAT *, BLASLONG, FLOAT *, BLASLONG, FLOAT *, int) = {
HEMV_THREAD_U, HEMV_THREAD_L, HEMV_THREAD_V, HEMV_THREAD_M,
};
#endif
blasint info;
int uplo;
FLOAT *buffer;
PRINT_DEBUG_NAME;
TOUPPER(uplo_arg);
uplo = -1;
if (uplo_arg == 'U') uplo = 0;
if (uplo_arg == 'L') uplo = 1;
if (uplo_arg == 'V') uplo = 2;
if (uplo_arg == 'M') uplo = 3;
info = 0;
if (incy == 0) info = 10;
if (incx == 0) info = 7;
if (lda < MAX(1, n)) info = 5;
if (n < 0) info = 2;
if (uplo < 0) info = 1;
if (info != 0) {
BLASFUNC(xerbla)(ERROR_NAME, &info, sizeof(ERROR_NAME));
return;
}
#else
void CNAME(enum CBLAS_ORDER order, enum CBLAS_UPLO Uplo, blasint n, void *VALPHA,
void *va, blasint lda, void *vx, blasint incx, void *VBETA, void *vy, blasint incy) {
FLOAT* ALPHA = (FLOAT*) VALPHA;
FLOAT* BETA = (FLOAT*) VBETA;
FLOAT* a = (FLOAT*) va;
FLOAT* x = (FLOAT*) vx;
FLOAT* y = (FLOAT*) vy;
FLOAT alpha_r = ALPHA[0];
FLOAT alpha_i = ALPHA[1];
FLOAT beta_r = BETA[0];
FLOAT beta_i = BETA[1];
FLOAT *buffer;
int uplo;
blasint info;
#ifdef SMP
int nthreads;
#endif
int (*hemv[])(BLASLONG, BLASLONG, FLOAT, FLOAT, FLOAT *, BLASLONG, FLOAT *, BLASLONG, FLOAT *, BLASLONG, FLOAT *) = {
HEMV_U, HEMV_L, HEMV_V, HEMV_M,
};
#ifdef SMP
int (*hemv_thread[])(BLASLONG, FLOAT *, FLOAT *, BLASLONG, FLOAT *, BLASLONG, FLOAT *, BLASLONG, FLOAT *, int) = {
HEMV_THREAD_U, HEMV_THREAD_L, HEMV_THREAD_V, HEMV_THREAD_M,
};
#endif
PRINT_DEBUG_CNAME;
uplo = -1;
info = 0;
if (order == CblasColMajor) {
if (Uplo == CblasUpper) uplo = 0;
if (Uplo == CblasLower) uplo = 1;
info = -1;
if (incy == 0) info = 10;
if (incx == 0) info = 7;
if (lda < MAX(1, n)) info = 5;
if (n < 0) info = 2;
if (uplo < 0) info = 1;
}
if (order == CblasRowMajor) {
if (Uplo == CblasUpper) uplo = 3;
if (Uplo == CblasLower) uplo = 2;
info = -1;
if (incy == 0) info = 10;
if (incx == 0) info = 7;
if (lda < MAX(1, n)) info = 5;
if (n < 0) info = 2;
if (uplo < 0) info = 1;
}
if (info >= 0) {
BLASFUNC(xerbla)(ERROR_NAME, &info, sizeof(ERROR_NAME));
return;
}
#endif
if (n == 0) return;
if ((beta_r != ONE) || (beta_i != ZERO)) SCAL_K(n, 0, 0, beta_r, beta_i, y, blasabs(incy), NULL, 0, NULL, 0);
if ((alpha_r == ZERO) && (alpha_i == ZERO)) return;
IDEBUG_START;
FUNCTION_PROFILE_START();
if (incx < 0 ) x -= (n - 1) * incx * 2;
if (incy < 0 ) y -= (n - 1) * incy * 2;
buffer = (FLOAT *)blas_memory_alloc(1);
#ifdef SMP
if (n<MULTI_THREAD_MINIMAL) {
nthreads = 1 ;
} else {
nthreads = num_cpu_avail(2);
};
if (nthreads == 1) {
#endif
(hemv[uplo])(n, n, alpha_r, alpha_i, a, lda, x, incx, y, incy, buffer);
#ifdef SMP
} else {
(hemv_thread[uplo])(n, ALPHA, a, lda, x, incx, y, incy, buffer, nthreads);
}
#endif
blas_memory_free(buffer);
FUNCTION_PROFILE_END(4, n * n / 2 + n, 2 * n * n);
IDEBUG_END;
return;
}
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