LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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lapacke_sgtsvx.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
20 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
21 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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24 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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27 THE POSSIBILITY OF SUCH DAMAGE.
28*****************************************************************************
29* Contents: Native high-level C interface to LAPACK function sgtsvx
30* Author: Intel Corporation
31*****************************************************************************/
32
33#include "lapacke_utils.h"
34
35lapack_int LAPACKE_sgtsvx( int matrix_layout, char fact, char trans,
36 lapack_int n, lapack_int nrhs, const float* dl,
37 const float* d, const float* du, float* dlf,
38 float* df, float* duf, float* du2, lapack_int* ipiv,
39 const float* b, lapack_int ldb, float* x,
40 lapack_int ldx, float* rcond, float* ferr,
41 float* berr )
42{
43 lapack_int info = 0;
44 lapack_int* iwork = NULL;
45 float* work = NULL;
46 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
47 LAPACKE_xerbla( "LAPACKE_sgtsvx", -1 );
48 return -1;
49 }
50#ifndef LAPACK_DISABLE_NAN_CHECK
51 if( LAPACKE_get_nancheck() ) {
52 /* Optionally check input matrices for NaNs */
53 if( LAPACKE_sge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
54 return -14;
55 }
56 if( LAPACKE_s_nancheck( n, d, 1 ) ) {
57 return -7;
58 }
59 if( LAPACKE_lsame( fact, 'f' ) ) {
60 if( LAPACKE_s_nancheck( n, df, 1 ) ) {
61 return -10;
62 }
63 }
64 if( LAPACKE_s_nancheck( n-1, dl, 1 ) ) {
65 return -6;
66 }
67 if( LAPACKE_lsame( fact, 'f' ) ) {
68 if( LAPACKE_s_nancheck( n-1, dlf, 1 ) ) {
69 return -9;
70 }
71 }
72 if( LAPACKE_s_nancheck( n-1, du, 1 ) ) {
73 return -8;
74 }
75 if( LAPACKE_lsame( fact, 'f' ) ) {
76 if( LAPACKE_s_nancheck( n-2, du2, 1 ) ) {
77 return -12;
78 }
79 }
80 if( LAPACKE_lsame( fact, 'f' ) ) {
81 if( LAPACKE_s_nancheck( n-1, duf, 1 ) ) {
82 return -11;
83 }
84 }
85 }
86#endif
87 /* Allocate memory for working array(s) */
88 iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n) );
89 if( iwork == NULL ) {
91 goto exit_level_0;
92 }
93 work = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,3*n) );
94 if( work == NULL ) {
96 goto exit_level_1;
97 }
98 /* Call middle-level interface */
99 info = LAPACKE_sgtsvx_work( matrix_layout, fact, trans, n, nrhs, dl, d, du,
100 dlf, df, duf, du2, ipiv, b, ldb, x, ldx, rcond,
101 ferr, berr, work, iwork );
102 /* Release memory and exit */
103 LAPACKE_free( work );
104exit_level_1:
105 LAPACKE_free( iwork );
106exit_level_0:
107 if( info == LAPACK_WORK_MEMORY_ERROR ) {
108 LAPACKE_xerbla( "LAPACKE_sgtsvx", info );
109 }
110 return info;
111}
#define lapack_int
Definition: lapack.h:87
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
lapack_int LAPACKE_sgtsvx_work(int matrix_layout, char fact, char trans, lapack_int n, lapack_int nrhs, const float *dl, const float *d, const float *du, float *dlf, float *df, float *duf, float *du2, lapack_int *ipiv, const float *b, lapack_int ldb, float *x, lapack_int ldx, float *rcond, float *ferr, float *berr, float *work, lapack_int *iwork)
int LAPACKE_get_nancheck(void)
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
lapack_int LAPACKE_sgtsvx(int matrix_layout, char fact, char trans, lapack_int n, lapack_int nrhs, const float *dl, const float *d, const float *du, float *dlf, float *df, float *duf, float *du2, lapack_int *ipiv, const float *b, lapack_int ldb, float *x, lapack_int ldx, float *rcond, float *ferr, float *berr)
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
void LAPACKE_xerbla(const char *name, lapack_int info)
lapack_logical LAPACKE_s_nancheck(lapack_int n, const float *x, lapack_int incx)
lapack_logical LAPACKE_sge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const float *a, lapack_int lda)
#define MAX(x, y)
Definition: lapacke_utils.h:46