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2 Copyright (c) 2014, Intel Corp.
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28 *****************************************************************************
29 * Contents: Native middle-level C interface to LAPACK function dgerfs
30 * Author: Intel Corporation
31 * Generated November 2015
32 *****************************************************************************/
33
34 #include "lapacke_utils.h"
35
LAPACKE_dgerfs_work(int matrix_layout,char trans,lapack_int n,lapack_int nrhs,const double * a,lapack_int lda,const double * af,lapack_int ldaf,const lapack_int * ipiv,const double * b,lapack_int ldb,double * x,lapack_int ldx,double * ferr,double * berr,double * work,lapack_int * iwork)36 lapack_int LAPACKE_dgerfs_work( int matrix_layout, char trans, lapack_int n,
37 lapack_int nrhs, const double* a,
38 lapack_int lda, const double* af,
39 lapack_int ldaf, const lapack_int* ipiv,
40 const double* b, lapack_int ldb, double* x,
41 lapack_int ldx, double* ferr, double* berr,
42 double* work, lapack_int* iwork )
43 {
44 lapack_int info = 0;
45 if( matrix_layout == LAPACK_COL_MAJOR ) {
46 /* Call LAPACK function and adjust info */
47 LAPACK_dgerfs( &trans, &n, &nrhs, a, &lda, af, &ldaf, ipiv, b, &ldb, x,
48 &ldx, ferr, berr, work, iwork, &info );
49 if( info < 0 ) {
50 info = info - 1;
51 }
52 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
53 lapack_int lda_t = MAX(1,n);
54 lapack_int ldaf_t = MAX(1,n);
55 lapack_int ldb_t = MAX(1,n);
56 lapack_int ldx_t = MAX(1,n);
57 double* a_t = NULL;
58 double* af_t = NULL;
59 double* b_t = NULL;
60 double* x_t = NULL;
61 /* Check leading dimension(s) */
62 if( lda < n ) {
63 info = -6;
64 LAPACKE_xerbla( "LAPACKE_dgerfs_work", info );
65 return info;
66 }
67 if( ldaf < n ) {
68 info = -8;
69 LAPACKE_xerbla( "LAPACKE_dgerfs_work", info );
70 return info;
71 }
72 if( ldb < nrhs ) {
73 info = -11;
74 LAPACKE_xerbla( "LAPACKE_dgerfs_work", info );
75 return info;
76 }
77 if( ldx < nrhs ) {
78 info = -13;
79 LAPACKE_xerbla( "LAPACKE_dgerfs_work", info );
80 return info;
81 }
82 /* Allocate memory for temporary array(s) */
83 a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) );
84 if( a_t == NULL ) {
85 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
86 goto exit_level_0;
87 }
88 af_t = (double*)LAPACKE_malloc( sizeof(double) * ldaf_t * MAX(1,n) );
89 if( af_t == NULL ) {
90 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
91 goto exit_level_1;
92 }
93 b_t = (double*)LAPACKE_malloc( sizeof(double) * ldb_t * MAX(1,nrhs) );
94 if( b_t == NULL ) {
95 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
96 goto exit_level_2;
97 }
98 x_t = (double*)LAPACKE_malloc( sizeof(double) * ldx_t * MAX(1,nrhs) );
99 if( x_t == NULL ) {
100 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
101 goto exit_level_3;
102 }
103 /* Transpose input matrices */
104 LAPACKE_dge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
105 LAPACKE_dge_trans( matrix_layout, n, n, af, ldaf, af_t, ldaf_t );
106 LAPACKE_dge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
107 LAPACKE_dge_trans( matrix_layout, n, nrhs, x, ldx, x_t, ldx_t );
108 /* Call LAPACK function and adjust info */
109 LAPACK_dgerfs( &trans, &n, &nrhs, a_t, &lda_t, af_t, &ldaf_t, ipiv, b_t,
110 &ldb_t, x_t, &ldx_t, ferr, berr, work, iwork, &info );
111 if( info < 0 ) {
112 info = info - 1;
113 }
114 /* Transpose output matrices */
115 LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
116 /* Release memory and exit */
117 LAPACKE_free( x_t );
118 exit_level_3:
119 LAPACKE_free( b_t );
120 exit_level_2:
121 LAPACKE_free( af_t );
122 exit_level_1:
123 LAPACKE_free( a_t );
124 exit_level_0:
125 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
126 LAPACKE_xerbla( "LAPACKE_dgerfs_work", info );
127 }
128 } else {
129 info = -1;
130 LAPACKE_xerbla( "LAPACKE_dgerfs_work", info );
131 }
132 return info;
133 }
134