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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 ssbgvx
30 * Author: Intel Corporation
31 * Generated November 2015
32 *****************************************************************************/
33
34 #include "lapacke_utils.h"
35
LAPACKE_ssbgvx_work(int matrix_layout,char jobz,char range,char uplo,lapack_int n,lapack_int ka,lapack_int kb,float * ab,lapack_int ldab,float * bb,lapack_int ldbb,float * q,lapack_int ldq,float vl,float vu,lapack_int il,lapack_int iu,float abstol,lapack_int * m,float * w,float * z,lapack_int ldz,float * work,lapack_int * iwork,lapack_int * ifail)36 lapack_int LAPACKE_ssbgvx_work( int matrix_layout, char jobz, char range,
37 char uplo, lapack_int n, lapack_int ka,
38 lapack_int kb, float* ab, lapack_int ldab,
39 float* bb, lapack_int ldbb, float* q,
40 lapack_int ldq, float vl, float vu,
41 lapack_int il, lapack_int iu, float abstol,
42 lapack_int* m, float* w, float* z,
43 lapack_int ldz, float* work, lapack_int* iwork,
44 lapack_int* ifail )
45 {
46 lapack_int info = 0;
47 if( matrix_layout == LAPACK_COL_MAJOR ) {
48 /* Call LAPACK function and adjust info */
49 LAPACK_ssbgvx( &jobz, &range, &uplo, &n, &ka, &kb, ab, &ldab, bb, &ldbb,
50 q, &ldq, &vl, &vu, &il, &iu, &abstol, m, w, z, &ldz,
51 work, iwork, ifail, &info );
52 if( info < 0 ) {
53 info = info - 1;
54 }
55 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
56 lapack_int ldab_t = MAX(1,ka+1);
57 lapack_int ldbb_t = MAX(1,kb+1);
58 lapack_int ldq_t = MAX(1,n);
59 lapack_int ldz_t = MAX(1,n);
60 float* ab_t = NULL;
61 float* bb_t = NULL;
62 float* q_t = NULL;
63 float* z_t = NULL;
64 /* Check leading dimension(s) */
65 if( ldab < n ) {
66 info = -9;
67 LAPACKE_xerbla( "LAPACKE_ssbgvx_work", info );
68 return info;
69 }
70 if( ldbb < n ) {
71 info = -11;
72 LAPACKE_xerbla( "LAPACKE_ssbgvx_work", info );
73 return info;
74 }
75 if( ldq < n ) {
76 info = -13;
77 LAPACKE_xerbla( "LAPACKE_ssbgvx_work", info );
78 return info;
79 }
80 if( ldz < n ) {
81 info = -22;
82 LAPACKE_xerbla( "LAPACKE_ssbgvx_work", info );
83 return info;
84 }
85 /* Allocate memory for temporary array(s) */
86 ab_t = (float*)LAPACKE_malloc( sizeof(float) * ldab_t * MAX(1,n) );
87 if( ab_t == NULL ) {
88 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
89 goto exit_level_0;
90 }
91 bb_t = (float*)LAPACKE_malloc( sizeof(float) * ldbb_t * MAX(1,n) );
92 if( bb_t == NULL ) {
93 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
94 goto exit_level_1;
95 }
96 if( LAPACKE_lsame( jobz, 'v' ) ) {
97 q_t = (float*)LAPACKE_malloc( sizeof(float) * ldq_t * MAX(1,n) );
98 if( q_t == NULL ) {
99 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
100 goto exit_level_2;
101 }
102 }
103 if( LAPACKE_lsame( jobz, 'v' ) ) {
104 z_t = (float*)LAPACKE_malloc( sizeof(float) * ldz_t * MAX(1,n) );
105 if( z_t == NULL ) {
106 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
107 goto exit_level_3;
108 }
109 }
110 /* Transpose input matrices */
111 LAPACKE_ssb_trans( matrix_layout, uplo, n, ka, ab, ldab, ab_t, ldab_t );
112 LAPACKE_ssb_trans( matrix_layout, uplo, n, kb, bb, ldbb, bb_t, ldbb_t );
113 /* Call LAPACK function and adjust info */
114 LAPACK_ssbgvx( &jobz, &range, &uplo, &n, &ka, &kb, ab_t, &ldab_t, bb_t,
115 &ldbb_t, q_t, &ldq_t, &vl, &vu, &il, &iu, &abstol, m, w,
116 z_t, &ldz_t, work, iwork, ifail, &info );
117 if( info < 0 ) {
118 info = info - 1;
119 }
120 /* Transpose output matrices */
121 LAPACKE_ssb_trans( LAPACK_COL_MAJOR, uplo, n, ka, ab_t, ldab_t, ab,
122 ldab );
123 LAPACKE_ssb_trans( LAPACK_COL_MAJOR, uplo, n, kb, bb_t, ldbb_t, bb,
124 ldbb );
125 if( LAPACKE_lsame( jobz, 'v' ) ) {
126 LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, q_t, ldq_t, q, ldq );
127 }
128 if( LAPACKE_lsame( jobz, 'v' ) ) {
129 LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, z_t, ldz_t, z, ldz );
130 }
131 /* Release memory and exit */
132 if( LAPACKE_lsame( jobz, 'v' ) ) {
133 LAPACKE_free( z_t );
134 }
135 exit_level_3:
136 if( LAPACKE_lsame( jobz, 'v' ) ) {
137 LAPACKE_free( q_t );
138 }
139 exit_level_2:
140 LAPACKE_free( bb_t );
141 exit_level_1:
142 LAPACKE_free( ab_t );
143 exit_level_0:
144 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
145 LAPACKE_xerbla( "LAPACKE_ssbgvx_work", info );
146 }
147 } else {
148 info = -1;
149 LAPACKE_xerbla( "LAPACKE_ssbgvx_work", info );
150 }
151 return info;
152 }
153