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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 sorcsd
30 * Author: Intel Corporation
31 *****************************************************************************/
32
33 #include "lapacke_utils.h"
34
LAPACKE_sorcsd(int matrix_layout,char jobu1,char jobu2,char jobv1t,char jobv2t,char trans,char signs,lapack_int m,lapack_int p,lapack_int q,float * x11,lapack_int ldx11,float * x12,lapack_int ldx12,float * x21,lapack_int ldx21,float * x22,lapack_int ldx22,float * theta,float * u1,lapack_int ldu1,float * u2,lapack_int ldu2,float * v1t,lapack_int ldv1t,float * v2t,lapack_int ldv2t)35 lapack_int LAPACKE_sorcsd( int matrix_layout, char jobu1, char jobu2,
36 char jobv1t, char jobv2t, char trans, char signs,
37 lapack_int m, lapack_int p, lapack_int q, float* x11,
38 lapack_int ldx11, float* x12, lapack_int ldx12,
39 float* x21, lapack_int ldx21, float* x22,
40 lapack_int ldx22, float* theta, float* u1,
41 lapack_int ldu1, float* u2, lapack_int ldu2,
42 float* v1t, lapack_int ldv1t, float* v2t,
43 lapack_int ldv2t )
44 {
45 lapack_int info = 0;
46 lapack_int lwork = -1;
47 lapack_int* iwork = NULL;
48 float* work = NULL;
49 float work_query;
50 int lapack_layout;
51 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
52 LAPACKE_xerbla( "LAPACKE_sorcsd", -1 );
53 return -1;
54 }
55 if( LAPACKE_lsame( trans, 'n' ) && matrix_layout == LAPACK_COL_MAJOR ) {
56 lapack_layout = LAPACK_COL_MAJOR;
57 } else {
58 lapack_layout = LAPACK_ROW_MAJOR;
59 }
60 #ifndef LAPACK_DISABLE_NAN_CHECK
61 if( LAPACKE_get_nancheck() ) {
62 /* Optionally check input matrices for NaNs */
63 if( LAPACKE_sge_nancheck( lapack_layout, p, q, x11, ldx11 ) ) {
64 return -11;
65 }
66 if( LAPACKE_sge_nancheck( lapack_layout, p, m-q, x12, ldx12 ) ) {
67 return -13;
68 }
69 if( LAPACKE_sge_nancheck( lapack_layout, m-p, q, x21, ldx21 ) ) {
70 return -15;
71 }
72 if( LAPACKE_sge_nancheck( lapack_layout, m-p, m-q, x22, ldx22 ) ) {
73 return -17;
74 }
75 }
76 #endif
77 /* Allocate memory for working array(s) */
78 iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,m-MIN(MIN(p,m-p),MIN(q,m-q))) );
79 if( iwork == NULL ) {
80 info = LAPACK_WORK_MEMORY_ERROR;
81 goto exit_level_0;
82 }
83 /* Query optimal working array(s) size */
84 info = LAPACKE_sorcsd_work( matrix_layout, jobu1, jobu2, jobv1t, jobv2t,
85 trans, signs, m, p, q, x11, ldx11, x12, ldx12,
86 x21, ldx21, x22, ldx22, theta, u1, ldu1, u2,
87 ldu2, v1t, ldv1t, v2t, ldv2t, &work_query,
88 lwork, iwork );
89 if( info != 0 ) {
90 goto exit_level_1;
91 }
92 lwork = (lapack_int)work_query;
93 /* Allocate memory for work arrays */
94 work = (float*)LAPACKE_malloc( sizeof(float) * lwork );
95 if( work == NULL ) {
96 info = LAPACK_WORK_MEMORY_ERROR;
97 goto exit_level_1;
98 }
99 /* Call middle-level interface */
100 info = LAPACKE_sorcsd_work( matrix_layout, jobu1, jobu2, jobv1t, jobv2t,
101 trans, signs, m, p, q, x11, ldx11, x12, ldx12,
102 x21, ldx21, x22, ldx22, theta, u1, ldu1, u2,
103 ldu2, v1t, ldv1t, v2t, ldv2t, work, lwork,
104 iwork );
105 /* Release memory and exit */
106 LAPACKE_free( work );
107 exit_level_1:
108 LAPACKE_free( iwork );
109 exit_level_0:
110 if( info == LAPACK_WORK_MEMORY_ERROR ) {
111 LAPACKE_xerbla( "LAPACKE_sorcsd", info );
112 }
113 return info;
114 }
115