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2 /* Copyright 2009, 2010 The University of Texas at Austin. */
3 /* All rights reserved. */
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19 /* AUSTIN ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, */
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37 /*********************************************************************/
42 #ifdef FUNCTION_PROFILE
43 #include "functable.h"
55 #define ERROR_NAME "QSBMV "
57 #define ERROR_NAME "DSBMV "
59 #define ERROR_NAME "SSBMV "
62 static int (*sbmv[])(BLASLONG, BLASLONG, FLOAT, FLOAT *, BLASLONG, FLOAT *, BLASLONG, FLOAT *, BLASLONG, void *) = {
73 static int (*sbmv_thread[])(BLASLONG, BLASLONG, FLOAT, FLOAT *, BLASLONG, FLOAT *, BLASLONG, FLOAT *, BLASLONG, FLOAT *, int) = {
75 qsbmv_thread_U, qsbmv_thread_L,
77 dsbmv_thread_U, dsbmv_thread_L,
79 ssbmv_thread_U, ssbmv_thread_L,
86 void NAME(char *UPLO, blasint *N, blasint *K, FLOAT *ALPHA, FLOAT *a, blasint *LDA,
87 FLOAT *x, blasint *INCX, FLOAT *BETA, FLOAT *y, blasint *INCY){
89 char uplo_arg = *UPLO;
110 if (uplo_arg == 'U') uplo = 0;
111 if (uplo_arg == 'L') uplo = 1;
115 if (incy == 0) info = 11;
116 if (incx == 0) info = 8;
117 if (lda < k + 1) info = 6;
120 if (uplo < 0) info = 1;
123 BLASFUNC(xerbla)(ERROR_NAME, &info, sizeof(ERROR_NAME));
129 void CNAME(enum CBLAS_ORDER order,
130 enum CBLAS_UPLO Uplo,
131 blasint n, blasint k,
133 FLOAT *a, blasint lda,
134 FLOAT *x, blasint incx,
136 FLOAT *y, blasint incy){
150 if (order == CblasColMajor) {
151 if (Uplo == CblasUpper) uplo = 0;
152 if (Uplo == CblasLower) uplo = 1;
156 if (incy == 0) info = 11;
157 if (incx == 0) info = 8;
158 if (lda < k + 1) info = 6;
161 if (uplo < 0) info = 1;
164 if (order == CblasRowMajor) {
165 if (Uplo == CblasUpper) uplo = 1;
166 if (Uplo == CblasLower) uplo = 0;
170 if (incy == 0) info = 11;
171 if (incx == 0) info = 8;
172 if (lda < k + 1) info = 6;
175 if (uplo < 0) info = 1;
179 BLASFUNC(xerbla)(ERROR_NAME, &info, sizeof(ERROR_NAME));
187 if (beta != ONE) SCAL_K(n, 0, 0, beta, y, blasabs(incy), NULL, 0, NULL, 0);
189 if (alpha == ZERO) return;
193 FUNCTION_PROFILE_START();
195 if (incx < 0 ) x -= (n - 1) * incx;
196 if (incy < 0 ) y -= (n - 1) * incy;
198 buffer = (FLOAT *)blas_memory_alloc(1);
201 nthreads = num_cpu_avail(2);
206 (sbmv[uplo])(n, k, alpha, a, lda, x, incx, y, incy, buffer);
211 (sbmv_thread[uplo])(n, k, alpha, a, lda, x, incx, y, incy, buffer, nthreads);
216 blas_memory_free(buffer);
218 FUNCTION_PROFILE_END(1, n * k / 2 + n, n * k);