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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 dggsvp3
30 * Author: Intel Corporation
31 *****************************************************************************/
32
33 #include "lapacke_utils.h"
34
LAPACKE_dggsvp3(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_dggsvp3( 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 lapack_int lwork = -1;
47 double work_query;
48 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
49 LAPACKE_xerbla( "LAPACKE_dggsvp3", -1 );
50 return -1;
51 }
52 #ifndef LAPACK_DISABLE_NAN_CHECK
53 if( LAPACKE_get_nancheck() ) {
54 /* Optionally check input matrices for NaNs */
55 if( LAPACKE_dge_nancheck( matrix_layout, m, n, a, lda ) ) {
56 return -8;
57 }
58 if( LAPACKE_dge_nancheck( matrix_layout, p, n, b, ldb ) ) {
59 return -10;
60 }
61 if( LAPACKE_d_nancheck( 1, &tola, 1 ) ) {
62 return -12;
63 }
64 if( LAPACKE_d_nancheck( 1, &tolb, 1 ) ) {
65 return -13;
66 }
67 }
68 #endif
69 /* Query optimal size for working array */
70 info = LAPACKE_dggsvp3_work( matrix_layout, jobu, jobv, jobq, m, p, n,
71 a, lda, b, ldb, tola, tolb, k, l, u, ldu,
72 v, ldv, q, ldq, iwork, tau, &work_query,
73 lwork );
74 if( info != 0 )
75 goto exit_level_0;
76 lwork = work_query;
77 /* Allocate memory for working array(s) */
78 iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n) );
79 if( iwork == NULL ) {
80 info = LAPACK_WORK_MEMORY_ERROR;
81 goto exit_level_0;
82 }
83 tau = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,n) );
84 if( tau == NULL ) {
85 info = LAPACK_WORK_MEMORY_ERROR;
86 goto exit_level_1;
87 }
88 work = (double*)LAPACKE_malloc( sizeof(double) * lwork );
89 if( work == NULL ) {
90 info = LAPACK_WORK_MEMORY_ERROR;
91 goto exit_level_2;
92 }
93 /* Call middle-level interface */
94 info = LAPACKE_dggsvp3_work( matrix_layout, jobu, jobv, jobq, m, p, n, a, lda,
95 b, ldb, tola, tolb, k, l, u, ldu, v, ldv, q,
96 ldq, iwork, tau, work, lwork );
97 /* Release memory and exit */
98 LAPACKE_free( work );
99 exit_level_2:
100 LAPACKE_free( tau );
101 exit_level_1:
102 LAPACKE_free( iwork );
103 exit_level_0:
104 if( info == LAPACK_WORK_MEMORY_ERROR ) {
105 LAPACKE_xerbla( "LAPACKE_dggsvp3", info );
106 }
107 return info;
108 }
109