LAPACK 3.12.0 LAPACK: Linear Algebra PACKage
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## ◆ F77_dtbmv()

 void F77_dtbmv ( CBLAS_INT * layout, char * uplow, char * transp, char * diagn, CBLAS_INT * n, CBLAS_INT * k, double * a, CBLAS_INT * lda, double * x, CBLAS_INT * incx )

Definition at line 225 of file c_dblas2.c.

226 {
227 double *A;
228 CBLAS_INT irow, jcol, i, j, LDA;
229 CBLAS_TRANSPOSE trans;
230 CBLAS_UPLO uplo;
231 CBLAS_DIAG diag;
232
233 get_transpose_type(transp,&trans);
234 get_uplo_type(uplow,&uplo);
235 get_diag_type(diagn,&diag);
236
237 if (*layout == TEST_ROW_MJR) {
238 LDA = *k+1;
239 A = ( double* )malloc( (*n+*k)*LDA*sizeof( double ) );
240 if (uplo == CblasUpper) {
241 for( i=0; i<*k; i++ ){
242 irow=*k-i;
243 jcol=(*k)-i;
244 for( j=jcol; j<*n; j++ )
245 A[ LDA*(j-jcol)+irow ]=a[ (*lda)*j+i ];
246 }
247 i=*k;
248 irow=*k-i;
249 for( j=0; j<*n; j++ )
250 A[ LDA*j+irow ]=a[ (*lda)*j+i ];
251 }
252 else {
253 i=0;
254 irow=*k-i;
255 for( j=0; j<*n; j++ )
256 A[ LDA*j+irow ]=a[ (*lda)*j+i ];
257 for( i=1; i<*k+1; i++ ){
258 irow=*k-i;
259 jcol=i;
260 for( j=jcol; j<(*n+*k); j++ )
261 A[ LDA*j+irow ]=a[ (*lda)*(j-jcol)+i ];
262 }
263 }
264 cblas_dtbmv(CblasRowMajor, uplo, trans, diag, *n, *k, A, LDA, x, *incx);
265 free(A);
266 }
267 else
268 cblas_dtbmv(CblasColMajor, uplo, trans, diag, *n, *k, a, *lda, x, *incx);
269}
CBLAS_UPLO
Definition cblas.h:41
@ CblasUpper
Definition cblas.h:41
void cblas_dtbmv(CBLAS_LAYOUT layout, CBLAS_UPLO Uplo, CBLAS_TRANSPOSE TransA, CBLAS_DIAG Diag, const CBLAS_INT N, const CBLAS_INT K, const double *A, const CBLAS_INT lda, double *X, const CBLAS_INT incX)
Definition cblas_dtbmv.c:10
CBLAS_TRANSPOSE
Definition cblas.h:40
@ CblasColMajor
Definition cblas.h:39
@ CblasRowMajor
Definition cblas.h:39
CBLAS_DIAG
Definition cblas.h:42
#define CBLAS_INT
Definition cblas.h:24
void get_diag_type(char *type, CBLAS_DIAG *diag)
Definition auxiliary.c:25
#define TEST_ROW_MJR
Definition cblas_test.h:12
void get_uplo_type(char *type, CBLAS_UPLO *uplo)
Definition auxiliary.c:18
void get_transpose_type(char *type, CBLAS_TRANSPOSE *trans)
Definition auxiliary.c:8
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