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:
7
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
22 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
27 THE POSSIBILITY OF SUCH DAMAGE.
28 *****************************************************************************
29 * Contents: Native high-level C interface to LAPACK function dgbsvx
30 * Author: Intel Corporation
31 * Generated November 2015
32 *****************************************************************************/
33
34 #include "lapacke_utils.h"
35
LAPACKE_dgbsvx(int matrix_layout,char fact,char trans,lapack_int n,lapack_int kl,lapack_int ku,lapack_int nrhs,double * ab,lapack_int ldab,double * afb,lapack_int ldafb,lapack_int * ipiv,char * equed,double * r,double * c,double * b,lapack_int ldb,double * x,lapack_int ldx,double * rcond,double * ferr,double * berr,double * rpivot)36 lapack_int LAPACKE_dgbsvx( int matrix_layout, char fact, char trans,
37 lapack_int n, lapack_int kl, lapack_int ku,
38 lapack_int nrhs, double* ab, lapack_int ldab,
39 double* afb, lapack_int ldafb, lapack_int* ipiv,
40 char* equed, double* r, double* c, double* b,
41 lapack_int ldb, double* x, lapack_int ldx,
42 double* rcond, double* ferr, double* berr,
43 double* rpivot )
44 {
45 lapack_int info = 0;
46 lapack_int* iwork = NULL;
47 double* work = NULL;
48 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
49 LAPACKE_xerbla( "LAPACKE_dgbsvx", -1 );
50 return -1;
51 }
52 #ifndef LAPACK_DISABLE_NAN_CHECK
53 /* Optionally check input matrices for NaNs */
54 if( LAPACKE_dgb_nancheck( matrix_layout, n, n, kl, ku, ab, ldab ) ) {
55 return -8;
56 }
57 if( LAPACKE_lsame( fact, 'f' ) ) {
58 if( LAPACKE_dgb_nancheck( matrix_layout, n, n, kl, kl+ku, afb,
59 ldafb ) ) {
60 return -10;
61 }
62 }
63 if( LAPACKE_dge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
64 return -16;
65 }
66 if( LAPACKE_lsame( fact, 'f' ) && ( LAPACKE_lsame( *equed, 'b' ) ||
67 LAPACKE_lsame( *equed, 'c' ) ) ) {
68 if( LAPACKE_d_nancheck( n, c, 1 ) ) {
69 return -15;
70 }
71 }
72 if( LAPACKE_lsame( fact, 'f' ) && ( LAPACKE_lsame( *equed, 'b' ) ||
73 LAPACKE_lsame( *equed, 'r' ) ) ) {
74 if( LAPACKE_d_nancheck( n, r, 1 ) ) {
75 return -14;
76 }
77 }
78 #endif
79 /* Allocate memory for working array(s) */
80 iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n) );
81 if( iwork == NULL ) {
82 info = LAPACK_WORK_MEMORY_ERROR;
83 goto exit_level_0;
84 }
85 work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,3*n) );
86 if( work == NULL ) {
87 info = LAPACK_WORK_MEMORY_ERROR;
88 goto exit_level_1;
89 }
90 /* Call middle-level interface */
91 info = LAPACKE_dgbsvx_work( matrix_layout, fact, trans, n, kl, ku, nrhs, ab,
92 ldab, afb, ldafb, ipiv, equed, r, c, b, ldb, x,
93 ldx, rcond, ferr, berr, work, iwork );
94 /* Backup significant data from working array(s) */
95 *rpivot = work[0];
96 /* Release memory and exit */
97 LAPACKE_free( work );
98 exit_level_1:
99 LAPACKE_free( iwork );
100 exit_level_0:
101 if( info == LAPACK_WORK_MEMORY_ERROR ) {
102 LAPACKE_xerbla( "LAPACKE_dgbsvx", info );
103 }
104 return info;
105 }
106