LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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lapacke_sgesvx_work.c
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1/*****************************************************************************
2 Copyright (c) 2014, Intel Corp.
3 All rights reserved.
4
5 Redistribution and use in source and binary forms, with or without
6 modification, are permitted provided that the following conditions are met:
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8 * Redistributions of source code must retain the above copyright notice,
9 this list of conditions and the following disclaimer.
10 * Redistributions in binary form must reproduce the above copyright
11 notice, this list of conditions and the following disclaimer in the
12 documentation and/or other materials provided with the distribution.
13 * Neither the name of Intel Corporation nor the names of its contributors
14 may be used to endorse or promote products derived from this software
15 without specific prior written permission.
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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25 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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28*****************************************************************************
29* Contents: Native middle-level C interface to LAPACK function sgesvx
30* Author: Intel Corporation
31*****************************************************************************/
32
33#include "lapacke_utils.h"
34
35lapack_int LAPACKE_sgesvx_work( int matrix_layout, char fact, char trans,
36 lapack_int n, lapack_int nrhs, float* a,
37 lapack_int lda, float* af, lapack_int ldaf,
38 lapack_int* ipiv, char* equed, float* r,
39 float* c, float* b, lapack_int ldb, float* x,
40 lapack_int ldx, float* rcond, float* ferr,
41 float* berr, float* work, lapack_int* iwork )
42{
43 lapack_int info = 0;
44 if( matrix_layout == LAPACK_COL_MAJOR ) {
45 /* Call LAPACK function and adjust info */
46 LAPACK_sgesvx( &fact, &trans, &n, &nrhs, a, &lda, af, &ldaf, ipiv,
47 equed, r, c, b, &ldb, x, &ldx, rcond, ferr, berr, work,
48 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 float* a_t = NULL;
58 float* af_t = NULL;
59 float* b_t = NULL;
60 float* x_t = NULL;
61 /* Check leading dimension(s) */
62 if( lda < n ) {
63 info = -7;
64 LAPACKE_xerbla( "LAPACKE_sgesvx_work", info );
65 return info;
66 }
67 if( ldaf < n ) {
68 info = -9;
69 LAPACKE_xerbla( "LAPACKE_sgesvx_work", info );
70 return info;
71 }
72 if( ldb < nrhs ) {
73 info = -15;
74 LAPACKE_xerbla( "LAPACKE_sgesvx_work", info );
75 return info;
76 }
77 if( ldx < nrhs ) {
78 info = -17;
79 LAPACKE_xerbla( "LAPACKE_sgesvx_work", info );
80 return info;
81 }
82 /* Allocate memory for temporary array(s) */
83 a_t = (float*)LAPACKE_malloc( sizeof(float) * lda_t * MAX(1,n) );
84 if( a_t == NULL ) {
86 goto exit_level_0;
87 }
88 af_t = (float*)LAPACKE_malloc( sizeof(float) * ldaf_t * MAX(1,n) );
89 if( af_t == NULL ) {
91 goto exit_level_1;
92 }
93 b_t = (float*)LAPACKE_malloc( sizeof(float) * ldb_t * MAX(1,nrhs) );
94 if( b_t == NULL ) {
96 goto exit_level_2;
97 }
98 x_t = (float*)LAPACKE_malloc( sizeof(float) * ldx_t * MAX(1,nrhs) );
99 if( x_t == NULL ) {
101 goto exit_level_3;
102 }
103 /* Transpose input matrices */
104 LAPACKE_sge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
105 if( LAPACKE_lsame( fact, 'f' ) ) {
106 LAPACKE_sge_trans( matrix_layout, n, n, af, ldaf, af_t, ldaf_t );
107 }
108 LAPACKE_sge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
109 /* Call LAPACK function and adjust info */
110 LAPACK_sgesvx( &fact, &trans, &n, &nrhs, a_t, &lda_t, af_t, &ldaf_t,
111 ipiv, equed, r, c, b_t, &ldb_t, x_t, &ldx_t, rcond, ferr,
112 berr, work, iwork, &info );
113 if( info < 0 ) {
114 info = info - 1;
115 }
116 /* Transpose output matrices */
117 if( LAPACKE_lsame( fact, 'e' ) && ( LAPACKE_lsame( *equed, 'b' ) ||
118 LAPACKE_lsame( *equed, 'c' ) || LAPACKE_lsame( *equed, 'r' ) ) ) {
119 LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
120 }
121 if( LAPACKE_lsame( fact, 'e' ) || LAPACKE_lsame( fact, 'n' ) ) {
122 LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, af_t, ldaf_t, af, ldaf );
123 }
124 if( LAPACKE_lsame( fact, 'f' ) && ( LAPACKE_lsame( *equed, 'b' ) ||
125 LAPACKE_lsame( *equed, 'c' ) || LAPACKE_lsame( *equed, 'r' ) ) ) {
126 LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, nrhs, b_t, ldb_t, b, ldb );
127 }
128 LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
129 /* Release memory and exit */
130 LAPACKE_free( x_t );
131exit_level_3:
132 LAPACKE_free( b_t );
133exit_level_2:
134 LAPACKE_free( af_t );
135exit_level_1:
136 LAPACKE_free( a_t );
137exit_level_0:
138 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
139 LAPACKE_xerbla( "LAPACKE_sgesvx_work", info );
140 }
141 } else {
142 info = -1;
143 LAPACKE_xerbla( "LAPACKE_sgesvx_work", info );
144 }
145 return info;
146}
#define lapack_int
Definition: lapack.h:87
#define LAPACK_sgesvx(...)
Definition: lapack.h:3790
#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_sgesvx_work(int matrix_layout, char fact, char trans, lapack_int n, lapack_int nrhs, float *a, lapack_int lda, float *af, lapack_int ldaf, lapack_int *ipiv, char *equed, float *r, float *c, float *b, lapack_int ldb, float *x, lapack_int ldx, float *rcond, float *ferr, float *berr, float *work, lapack_int *iwork)
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
void LAPACKE_xerbla(const char *name, lapack_int info)
void LAPACKE_sge_trans(int matrix_layout, lapack_int m, lapack_int n, const float *in, lapack_int ldin, float *out, lapack_int ldout)
#define MAX(x, y)
Definition: lapacke_utils.h:46