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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 dsysvxx
30 * Author: Intel Corporation
31 *****************************************************************************/
32
33 #include "lapacke_utils.h"
34
LAPACKE_dsysvxx_work(int matrix_layout,char fact,char uplo,lapack_int n,lapack_int nrhs,double * a,lapack_int lda,double * af,lapack_int ldaf,lapack_int * ipiv,char * equed,double * s,double * b,lapack_int ldb,double * x,lapack_int ldx,double * rcond,double * rpvgrw,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)35 lapack_int LAPACKE_dsysvxx_work( int matrix_layout, char fact, char uplo,
36 lapack_int n, lapack_int nrhs, double* a,
37 lapack_int lda, double* af, lapack_int ldaf,
38 lapack_int* ipiv, char* equed, double* s,
39 double* b, lapack_int ldb, double* x,
40 lapack_int ldx, double* rcond, double* rpvgrw,
41 double* berr, lapack_int n_err_bnds,
42 double* err_bnds_norm, double* err_bnds_comp,
43 lapack_int nparams, double* params,
44 double* work, lapack_int* iwork )
45 {
46 lapack_int info = 0;
47 if( matrix_layout == LAPACK_COL_MAJOR ) {
48 /* Call LAPACK function and adjust info */
49 LAPACK_dsysvxx( &fact, &uplo, &n, &nrhs, a, &lda, af, &ldaf, ipiv,
50 equed, s, b, &ldb, x, &ldx, rcond, rpvgrw, berr,
51 &n_err_bnds, err_bnds_norm, err_bnds_comp, &nparams,
52 params, work, iwork, &info );
53 if( info < 0 ) {
54 info = info - 1;
55 }
56 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
57 lapack_int lda_t = MAX(1,n);
58 lapack_int ldaf_t = MAX(1,n);
59 lapack_int ldb_t = MAX(1,n);
60 lapack_int ldx_t = MAX(1,n);
61 double* a_t = NULL;
62 double* af_t = NULL;
63 double* b_t = NULL;
64 double* x_t = NULL;
65 double* err_bnds_norm_t = NULL;
66 double* err_bnds_comp_t = NULL;
67 /* Check leading dimension(s) */
68 if( lda < n ) {
69 info = -7;
70 LAPACKE_xerbla( "LAPACKE_dsysvxx_work", info );
71 return info;
72 }
73 if( ldaf < n ) {
74 info = -9;
75 LAPACKE_xerbla( "LAPACKE_dsysvxx_work", info );
76 return info;
77 }
78 if( ldb < nrhs ) {
79 info = -14;
80 LAPACKE_xerbla( "LAPACKE_dsysvxx_work", info );
81 return info;
82 }
83 if( ldx < nrhs ) {
84 info = -16;
85 LAPACKE_xerbla( "LAPACKE_dsysvxx_work", info );
86 return info;
87 }
88 /* Allocate memory for temporary array(s) */
89 a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) );
90 if( a_t == NULL ) {
91 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
92 goto exit_level_0;
93 }
94 af_t = (double*)LAPACKE_malloc( sizeof(double) * ldaf_t * MAX(1,n) );
95 if( af_t == NULL ) {
96 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
97 goto exit_level_1;
98 }
99 b_t = (double*)LAPACKE_malloc( sizeof(double) * ldb_t * MAX(1,nrhs) );
100 if( b_t == NULL ) {
101 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
102 goto exit_level_2;
103 }
104 x_t = (double*)LAPACKE_malloc( sizeof(double) * ldx_t * MAX(1,nrhs) );
105 if( x_t == NULL ) {
106 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
107 goto exit_level_3;
108 }
109 err_bnds_norm_t = (double*)
110 LAPACKE_malloc( sizeof(double) * nrhs * MAX(1,n_err_bnds) );
111 if( err_bnds_norm_t == NULL ) {
112 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
113 goto exit_level_4;
114 }
115 err_bnds_comp_t = (double*)
116 LAPACKE_malloc( sizeof(double) * nrhs * MAX(1,n_err_bnds) );
117 if( err_bnds_comp_t == NULL ) {
118 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
119 goto exit_level_5;
120 }
121 /* Transpose input matrices */
122 LAPACKE_dsy_trans( matrix_layout, uplo, n, a, lda, a_t, lda_t );
123 if( LAPACKE_lsame( fact, 'f' ) ) {
124 LAPACKE_dsy_trans( matrix_layout, uplo, n, af, ldaf, af_t, ldaf_t );
125 }
126 LAPACKE_dge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
127 /* Call LAPACK function and adjust info */
128 LAPACK_dsysvxx( &fact, &uplo, &n, &nrhs, a_t, &lda_t, af_t, &ldaf_t,
129 ipiv, equed, s, b_t, &ldb_t, x_t, &ldx_t, rcond, rpvgrw,
130 berr, &n_err_bnds, err_bnds_norm_t, err_bnds_comp_t,
131 &nparams, params, work, iwork, &info );
132 if( info < 0 ) {
133 info = info - 1;
134 }
135 /* Transpose output matrices */
136 if( LAPACKE_lsame( fact, 'e' ) && LAPACKE_lsame( *equed, 'y' ) ) {
137 LAPACKE_dsy_trans( LAPACK_COL_MAJOR, uplo, n, a_t, lda_t, a, lda );
138 }
139 if( LAPACKE_lsame( fact, 'e' ) || LAPACKE_lsame( fact, 'n' ) ) {
140 LAPACKE_dsy_trans( LAPACK_COL_MAJOR, uplo, n, af_t, ldaf_t, af,
141 ldaf );
142 }
143 if( LAPACKE_lsame( fact, 'f' ) && LAPACKE_lsame( *equed, 'y' ) ) {
144 LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, nrhs, b_t, ldb_t, b, ldb );
145 }
146 LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
147 LAPACKE_dge_trans( LAPACK_COL_MAJOR, nrhs, n_err_bnds, err_bnds_norm_t,
148 nrhs, err_bnds_norm, n_err_bnds );
149 LAPACKE_dge_trans( LAPACK_COL_MAJOR, nrhs, n_err_bnds, err_bnds_comp_t,
150 nrhs, err_bnds_comp, n_err_bnds );
151 /* Release memory and exit */
152 LAPACKE_free( err_bnds_comp_t );
153 exit_level_5:
154 LAPACKE_free( err_bnds_norm_t );
155 exit_level_4:
156 LAPACKE_free( x_t );
157 exit_level_3:
158 LAPACKE_free( b_t );
159 exit_level_2:
160 LAPACKE_free( af_t );
161 exit_level_1:
162 LAPACKE_free( a_t );
163 exit_level_0:
164 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
165 LAPACKE_xerbla( "LAPACKE_dsysvxx_work", info );
166 }
167 } else {
168 info = -1;
169 LAPACKE_xerbla( "LAPACKE_dsysvxx_work", info );
170 }
171 return info;
172 }
173