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2 Copyright (c) 2014, Intel Corp.
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28 *****************************************************************************
29 * Contents: Native high-level C interface to LAPACK function dggsvp
30 * Author: Intel Corporation
31 *****************************************************************************/
32
33 #include "lapacke_utils.h"
34
LAPACKE_dggsvp(int matrix_layout,char jobu,char jobv,char jobq,lapack_int m,lapack_int p,lapack_int n,double * a,lapack_int lda,double * b,lapack_int ldb,double tola,double tolb,lapack_int * k,lapack_int * l,double * u,lapack_int ldu,double * v,lapack_int ldv,double * q,lapack_int ldq)35 lapack_int LAPACKE_dggsvp( int matrix_layout, char jobu, char jobv, char jobq,
36 lapack_int m, lapack_int p, lapack_int n, double* a,
37 lapack_int lda, double* b, lapack_int ldb,
38 double tola, double tolb, lapack_int* k,
39 lapack_int* l, double* u, lapack_int ldu, double* v,
40 lapack_int ldv, double* q, lapack_int ldq )
41 {
42 lapack_int info = 0;
43 lapack_int* iwork = NULL;
44 double* tau = NULL;
45 double* work = NULL;
46 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
47 LAPACKE_xerbla( "LAPACKE_dggsvp", -1 );
48 return -1;
49 }
50 #ifndef LAPACK_DISABLE_NAN_CHECK
51 if( LAPACKE_get_nancheck() ) {
52 /* Optionally check input matrices for NaNs */
53 if( LAPACKE_dge_nancheck( matrix_layout, m, n, a, lda ) ) {
54 return -8;
55 }
56 if( LAPACKE_dge_nancheck( matrix_layout, p, n, b, ldb ) ) {
57 return -10;
58 }
59 if( LAPACKE_d_nancheck( 1, &tola, 1 ) ) {
60 return -12;
61 }
62 if( LAPACKE_d_nancheck( 1, &tolb, 1 ) ) {
63 return -13;
64 }
65 }
66 #endif
67 /* Allocate memory for working array(s) */
68 iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n) );
69 if( iwork == NULL ) {
70 info = LAPACK_WORK_MEMORY_ERROR;
71 goto exit_level_0;
72 }
73 tau = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,n) );
74 if( tau == NULL ) {
75 info = LAPACK_WORK_MEMORY_ERROR;
76 goto exit_level_1;
77 }
78 work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,MAX3(3*n,m,p)) );
79 if( work == NULL ) {
80 info = LAPACK_WORK_MEMORY_ERROR;
81 goto exit_level_2;
82 }
83 /* Call middle-level interface */
84 info = LAPACKE_dggsvp_work( matrix_layout, jobu, jobv, jobq, m, p, n, a, lda,
85 b, ldb, tola, tolb, k, l, u, ldu, v, ldv, q,
86 ldq, iwork, tau, work );
87 /* Release memory and exit */
88 LAPACKE_free( work );
89 exit_level_2:
90 LAPACKE_free( tau );
91 exit_level_1:
92 LAPACKE_free( iwork );
93 exit_level_0:
94 if( info == LAPACK_WORK_MEMORY_ERROR ) {
95 LAPACKE_xerbla( "LAPACKE_dggsvp", info );
96 }
97 return info;
98 }
99