LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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lapacke_dgerfsx_work.c
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1/*****************************************************************************
2 Copyright (c) 2014, Intel Corp.
3 All rights reserved.
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6 modification, are permitted provided that the following conditions are met:
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10 * Redistributions in binary form must reproduce the above copyright
11 notice, this list of conditions and the following disclaimer in the
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16
17 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
18 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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28*****************************************************************************
29* Contents: Native middle-level C interface to LAPACK function dgerfsx
30* Author: Intel Corporation
31*****************************************************************************/
32
33#include "lapacke_utils.h"
34
35lapack_int LAPACKE_dgerfsx_work( int matrix_layout, char trans, char equed,
36 lapack_int n, lapack_int nrhs, const double* a,
37 lapack_int lda, const double* af,
38 lapack_int ldaf, const lapack_int* ipiv,
39 const double* r, const double* c,
40 const double* b, lapack_int ldb, double* x,
41 lapack_int ldx, double* rcond, double* berr,
42 lapack_int n_err_bnds, double* err_bnds_norm,
43 double* err_bnds_comp, lapack_int nparams,
44 double* params, double* work,
45 lapack_int* iwork )
46{
47 lapack_int info = 0;
48 if( matrix_layout == LAPACK_COL_MAJOR ) {
49 /* Call LAPACK function and adjust info */
50 LAPACK_dgerfsx( &trans, &equed, &n, &nrhs, a, &lda, af, &ldaf, ipiv, r,
51 c, b, &ldb, x, &ldx, rcond, berr, &n_err_bnds,
52 err_bnds_norm, err_bnds_comp, &nparams, params, work,
53 iwork, &info );
54 if( info < 0 ) {
55 info = info - 1;
56 }
57 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
58 lapack_int lda_t = MAX(1,n);
59 lapack_int ldaf_t = MAX(1,n);
60 lapack_int ldb_t = MAX(1,n);
61 lapack_int ldx_t = MAX(1,n);
62 double* a_t = NULL;
63 double* af_t = NULL;
64 double* b_t = NULL;
65 double* x_t = NULL;
66 double* err_bnds_norm_t = NULL;
67 double* err_bnds_comp_t = NULL;
68 /* Check leading dimension(s) */
69 if( lda < n ) {
70 info = -7;
71 LAPACKE_xerbla( "LAPACKE_dgerfsx_work", info );
72 return info;
73 }
74 if( ldaf < n ) {
75 info = -9;
76 LAPACKE_xerbla( "LAPACKE_dgerfsx_work", info );
77 return info;
78 }
79 if( ldb < nrhs ) {
80 info = -14;
81 LAPACKE_xerbla( "LAPACKE_dgerfsx_work", info );
82 return info;
83 }
84 if( ldx < nrhs ) {
85 info = -16;
86 LAPACKE_xerbla( "LAPACKE_dgerfsx_work", info );
87 return info;
88 }
89 /* Allocate memory for temporary array(s) */
90 a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) );
91 if( a_t == NULL ) {
93 goto exit_level_0;
94 }
95 af_t = (double*)LAPACKE_malloc( sizeof(double) * ldaf_t * MAX(1,n) );
96 if( af_t == NULL ) {
98 goto exit_level_1;
99 }
100 b_t = (double*)LAPACKE_malloc( sizeof(double) * ldb_t * MAX(1,nrhs) );
101 if( b_t == NULL ) {
103 goto exit_level_2;
104 }
105 x_t = (double*)LAPACKE_malloc( sizeof(double) * ldx_t * MAX(1,nrhs) );
106 if( x_t == NULL ) {
108 goto exit_level_3;
109 }
110 err_bnds_norm_t = (double*)
111 LAPACKE_malloc( sizeof(double) * nrhs * MAX(1,n_err_bnds) );
112 if( err_bnds_norm_t == NULL ) {
114 goto exit_level_4;
115 }
116 err_bnds_comp_t = (double*)
117 LAPACKE_malloc( sizeof(double) * nrhs * MAX(1,n_err_bnds) );
118 if( err_bnds_comp_t == NULL ) {
120 goto exit_level_5;
121 }
122 /* Transpose input matrices */
123 LAPACKE_dge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
124 LAPACKE_dge_trans( matrix_layout, n, n, af, ldaf, af_t, ldaf_t );
125 LAPACKE_dge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
126 LAPACKE_dge_trans( matrix_layout, n, nrhs, x, ldx, x_t, ldx_t );
127 /* Call LAPACK function and adjust info */
128 LAPACK_dgerfsx( &trans, &equed, &n, &nrhs, a_t, &lda_t, af_t, &ldaf_t,
129 ipiv, r, c, b_t, &ldb_t, x_t, &ldx_t, rcond, berr,
130 &n_err_bnds, err_bnds_norm_t, err_bnds_comp_t, &nparams,
131 params, work, iwork, &info );
132 if( info < 0 ) {
133 info = info - 1;
134 }
135 /* Transpose output matrices */
136 LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
137 LAPACKE_dge_trans( LAPACK_COL_MAJOR, nrhs, n_err_bnds, err_bnds_norm_t,
138 nrhs, err_bnds_norm, nrhs );
139 LAPACKE_dge_trans( LAPACK_COL_MAJOR, nrhs, n_err_bnds, err_bnds_comp_t,
140 nrhs, err_bnds_comp, nrhs );
141 /* Release memory and exit */
142 LAPACKE_free( err_bnds_comp_t );
143exit_level_5:
144 LAPACKE_free( err_bnds_norm_t );
145exit_level_4:
146 LAPACKE_free( x_t );
147exit_level_3:
148 LAPACKE_free( b_t );
149exit_level_2:
150 LAPACKE_free( af_t );
151exit_level_1:
152 LAPACKE_free( a_t );
153exit_level_0:
154 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
155 LAPACKE_xerbla( "LAPACKE_dgerfsx_work", info );
156 }
157 } else {
158 info = -1;
159 LAPACKE_xerbla( "LAPACKE_dgerfsx_work", info );
160 }
161 return info;
162}
#define lapack_int
Definition: lapack.h:87
#define LAPACK_dgerfsx(...)
Definition: lapack.h:3111
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:56
lapack_int LAPACKE_dgerfsx_work(int matrix_layout, char trans, char equed, lapack_int n, lapack_int nrhs, const double *a, lapack_int lda, const double *af, lapack_int ldaf, const lapack_int *ipiv, const double *r, const double *c, const double *b, lapack_int ldb, double *x, lapack_int ldx, double *rcond, double *berr, lapack_int n_err_bnds, double *err_bnds_norm, double *err_bnds_comp, lapack_int nparams, double *params, double *work, lapack_int *iwork)
void LAPACKE_xerbla(const char *name, lapack_int info)
#define MAX(x, y)
Definition: lapacke_utils.h:46
void LAPACKE_dge_trans(int matrix_layout, lapack_int m, lapack_int n, const double *in, lapack_int ldin, double *out, lapack_int ldout)