1 /*****************************************************************************
2 Copyright (c) 2014, Intel Corp.
3 All rights reserved.
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28 *****************************************************************************
29 * Contents: Native middle-level C interface to LAPACK function sbdsqr
30 * Author: Intel Corporation
31 * Generated November 2015
32 *****************************************************************************/
33
34 #include "lapacke_utils.h"
35
LAPACKE_sbdsqr_work(int matrix_layout,char uplo,lapack_int n,lapack_int ncvt,lapack_int nru,lapack_int ncc,float * d,float * e,float * vt,lapack_int ldvt,float * u,lapack_int ldu,float * c,lapack_int ldc,float * work)36 lapack_int LAPACKE_sbdsqr_work( int matrix_layout, char uplo, lapack_int n,
37 lapack_int ncvt, lapack_int nru, lapack_int ncc,
38 float* d, float* e, float* vt, lapack_int ldvt,
39 float* u, lapack_int ldu, float* c,
40 lapack_int ldc, float* work )
41 {
42 lapack_int info = 0;
43 if( matrix_layout == LAPACK_COL_MAJOR ) {
44 /* Call LAPACK function and adjust info */
45 LAPACK_sbdsqr( &uplo, &n, &ncvt, &nru, &ncc, d, e, vt, &ldvt, u, &ldu,
46 c, &ldc, work, &info );
47 if( info < 0 ) {
48 info = info - 1;
49 }
50 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
51 lapack_int ldc_t = MAX(1,n);
52 lapack_int ldu_t = MAX(1,nru);
53 lapack_int ldvt_t = MAX(1,n);
54 float* vt_t = NULL;
55 float* u_t = NULL;
56 float* c_t = NULL;
57 /* Check leading dimension(s) */
58 if( ldc < ncc ) {
59 info = -14;
60 LAPACKE_xerbla( "LAPACKE_sbdsqr_work", info );
61 return info;
62 }
63 if( ldu < n ) {
64 info = -12;
65 LAPACKE_xerbla( "LAPACKE_sbdsqr_work", info );
66 return info;
67 }
68 if( ldvt < ncvt ) {
69 info = -10;
70 LAPACKE_xerbla( "LAPACKE_sbdsqr_work", info );
71 return info;
72 }
73 /* Allocate memory for temporary array(s) */
74 if( ncvt != 0 ) {
75 vt_t = (float*)
76 LAPACKE_malloc( sizeof(float) * ldvt_t * MAX(1,ncvt) );
77 if( vt_t == NULL ) {
78 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
79 goto exit_level_0;
80 }
81 }
82 if( nru != 0 ) {
83 u_t = (float*)LAPACKE_malloc( sizeof(float) * ldu_t * MAX(1,n) );
84 if( u_t == NULL ) {
85 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
86 goto exit_level_1;
87 }
88 }
89 if( ncc != 0 ) {
90 c_t = (float*)LAPACKE_malloc( sizeof(float) * ldc_t * MAX(1,ncc) );
91 if( c_t == NULL ) {
92 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
93 goto exit_level_2;
94 }
95 }
96 /* Transpose input matrices */
97 if( ncvt != 0 ) {
98 LAPACKE_sge_trans( matrix_layout, n, ncvt, vt, ldvt, vt_t, ldvt_t );
99 }
100 if( nru != 0 ) {
101 LAPACKE_sge_trans( matrix_layout, nru, n, u, ldu, u_t, ldu_t );
102 }
103 if( ncc != 0 ) {
104 LAPACKE_sge_trans( matrix_layout, n, ncc, c, ldc, c_t, ldc_t );
105 }
106 /* Call LAPACK function and adjust info */
107 LAPACK_sbdsqr( &uplo, &n, &ncvt, &nru, &ncc, d, e, vt_t, &ldvt_t, u_t,
108 &ldu_t, c_t, &ldc_t, work, &info );
109 if( info < 0 ) {
110 info = info - 1;
111 }
112 /* Transpose output matrices */
113 if( ncvt != 0 ) {
114 LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, ncvt, vt_t, ldvt_t, vt,
115 ldvt );
116 }
117 if( nru != 0 ) {
118 LAPACKE_sge_trans( LAPACK_COL_MAJOR, nru, n, u_t, ldu_t, u, ldu );
119 }
120 if( ncc != 0 ) {
121 LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, ncc, c_t, ldc_t, c, ldc );
122 }
123 /* Release memory and exit */
124 if( ncc != 0 ) {
125 LAPACKE_free( c_t );
126 }
127 exit_level_2:
128 if( nru != 0 ) {
129 LAPACKE_free( u_t );
130 }
131 exit_level_1:
132 if( ncvt != 0 ) {
133 LAPACKE_free( vt_t );
134 }
135 exit_level_0:
136 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
137 LAPACKE_xerbla( "LAPACKE_sbdsqr_work", info );
138 }
139 } else {
140 info = -1;
141 LAPACKE_xerbla( "LAPACKE_sbdsqr_work", info );
142 }
143 return info;
144 }
145