LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_dsptrs_work()

lapack_int LAPACKE_dsptrs_work ( int  matrix_layout,
char  uplo,
lapack_int  n,
lapack_int  nrhs,
const double *  ap,
const lapack_int ipiv,
double *  b,
lapack_int  ldb 
)

Definition at line 35 of file lapacke_dsptrs_work.c.

39{
40 lapack_int info = 0;
41 if( matrix_layout == LAPACK_COL_MAJOR ) {
42 /* Call LAPACK function and adjust info */
43 LAPACK_dsptrs( &uplo, &n, &nrhs, ap, ipiv, b, &ldb, &info );
44 if( info < 0 ) {
45 info = info - 1;
46 }
47 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
48 lapack_int ldb_t = MAX(1,n);
49 double* b_t = NULL;
50 double* ap_t = NULL;
51 /* Check leading dimension(s) */
52 if( ldb < nrhs ) {
53 info = -8;
54 LAPACKE_xerbla( "LAPACKE_dsptrs_work", info );
55 return info;
56 }
57 /* Allocate memory for temporary array(s) */
58 b_t = (double*)LAPACKE_malloc( sizeof(double) * ldb_t * MAX(1,nrhs) );
59 if( b_t == NULL ) {
61 goto exit_level_0;
62 }
63 ap_t = (double*)
64 LAPACKE_malloc( sizeof(double) * ( MAX(1,n) * MAX(2,n+1) ) / 2 );
65 if( ap_t == NULL ) {
67 goto exit_level_1;
68 }
69 /* Transpose input matrices */
70 LAPACKE_dge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
71 LAPACKE_dsp_trans( matrix_layout, uplo, n, ap, ap_t );
72 /* Call LAPACK function and adjust info */
73 LAPACK_dsptrs( &uplo, &n, &nrhs, ap_t, ipiv, b_t, &ldb_t, &info );
74 if( info < 0 ) {
75 info = info - 1;
76 }
77 /* Transpose output matrices */
78 LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, nrhs, b_t, ldb_t, b, ldb );
79 /* Release memory and exit */
80 LAPACKE_free( ap_t );
81exit_level_1:
82 LAPACKE_free( b_t );
83exit_level_0:
84 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
85 LAPACKE_xerbla( "LAPACKE_dsptrs_work", info );
86 }
87 } else {
88 info = -1;
89 LAPACKE_xerbla( "LAPACKE_dsptrs_work", info );
90 }
91 return info;
92}
#define lapack_int
Definition: lapack.h:87
#define LAPACK_dsptrs(...)
Definition: lapack.h:16052
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:56
void LAPACKE_xerbla(const char *name, lapack_int info)
void LAPACKE_dsp_trans(int matrix_layout, char uplo, lapack_int n, const double *in, double *out)
#define MAX(x, y)
Definition: lapacke_utils.h:46
void LAPACKE_dge_trans(int matrix_layout, lapack_int m, lapack_int n, const double *in, lapack_int ldin, double *out, lapack_int ldout)
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