1 /*****************************************************************************
2 Copyright (c) 2014, Intel Corp.
3 All rights reserved.
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28 *****************************************************************************
29 * Contents: Native middle-level C interface to LAPACK function strevc
30 * Author: Intel Corporation
31 * Generated November 2015
32 *****************************************************************************/
33
34 #include "lapacke_utils.h"
35
LAPACKE_strevc_work(int matrix_layout,char side,char howmny,lapack_logical * select,lapack_int n,const float * t,lapack_int ldt,float * vl,lapack_int ldvl,float * vr,lapack_int ldvr,lapack_int mm,lapack_int * m,float * work)36 lapack_int LAPACKE_strevc_work( int matrix_layout, char side, char howmny,
37 lapack_logical* select, lapack_int n,
38 const float* t, lapack_int ldt, float* vl,
39 lapack_int ldvl, float* vr, lapack_int ldvr,
40 lapack_int mm, lapack_int* m, float* work )
41 {
42 lapack_int info = 0;
43 if( matrix_layout == LAPACK_COL_MAJOR ) {
44 /* Call LAPACK function and adjust info */
45 LAPACK_strevc( &side, &howmny, select, &n, t, &ldt, vl, &ldvl, vr,
46 &ldvr, &mm, m, work, &info );
47 if( info < 0 ) {
48 info = info - 1;
49 }
50 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
51 lapack_int ldt_t = MAX(1,n);
52 lapack_int ldvl_t = MAX(1,n);
53 lapack_int ldvr_t = MAX(1,n);
54 float* t_t = NULL;
55 float* vl_t = NULL;
56 float* vr_t = NULL;
57 /* Check leading dimension(s) */
58 if( ldt < n ) {
59 info = -7;
60 LAPACKE_xerbla( "LAPACKE_strevc_work", info );
61 return info;
62 }
63 if( ldvl < mm ) {
64 info = -9;
65 LAPACKE_xerbla( "LAPACKE_strevc_work", info );
66 return info;
67 }
68 if( ldvr < mm ) {
69 info = -11;
70 LAPACKE_xerbla( "LAPACKE_strevc_work", info );
71 return info;
72 }
73 /* Allocate memory for temporary array(s) */
74 t_t = (float*)LAPACKE_malloc( sizeof(float) * ldt_t * MAX(1,n) );
75 if( t_t == NULL ) {
76 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
77 goto exit_level_0;
78 }
79 if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'l' ) ) {
80 vl_t = (float*)LAPACKE_malloc( sizeof(float) * ldvl_t * MAX(1,mm) );
81 if( vl_t == NULL ) {
82 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
83 goto exit_level_1;
84 }
85 }
86 if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'r' ) ) {
87 vr_t = (float*)LAPACKE_malloc( sizeof(float) * ldvr_t * MAX(1,mm) );
88 if( vr_t == NULL ) {
89 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
90 goto exit_level_2;
91 }
92 }
93 /* Transpose input matrices */
94 LAPACKE_sge_trans( matrix_layout, n, n, t, ldt, t_t, ldt_t );
95 if( ( LAPACKE_lsame( side, 'l' ) || LAPACKE_lsame( side, 'b' ) ) &&
96 LAPACKE_lsame( howmny, 'b' ) ) {
97 LAPACKE_sge_trans( matrix_layout, n, mm, vl, ldvl, vl_t, ldvl_t );
98 }
99 if( ( LAPACKE_lsame( side, 'r' ) || LAPACKE_lsame( side, 'b' ) ) &&
100 LAPACKE_lsame( howmny, 'b' ) ) {
101 LAPACKE_sge_trans( matrix_layout, n, mm, vr, ldvr, vr_t, ldvr_t );
102 }
103 /* Call LAPACK function and adjust info */
104 LAPACK_strevc( &side, &howmny, select, &n, t_t, &ldt_t, vl_t, &ldvl_t,
105 vr_t, &ldvr_t, &mm, m, work, &info );
106 if( info < 0 ) {
107 info = info - 1;
108 }
109 /* Transpose output matrices */
110 if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'l' ) ) {
111 LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, mm, vl_t, ldvl_t, vl,
112 ldvl );
113 }
114 if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'r' ) ) {
115 LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, mm, vr_t, ldvr_t, vr,
116 ldvr );
117 }
118 /* Release memory and exit */
119 if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'r' ) ) {
120 LAPACKE_free( vr_t );
121 }
122 exit_level_2:
123 if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'l' ) ) {
124 LAPACKE_free( vl_t );
125 }
126 exit_level_1:
127 LAPACKE_free( t_t );
128 exit_level_0:
129 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
130 LAPACKE_xerbla( "LAPACKE_strevc_work", info );
131 }
132 } else {
133 info = -1;
134 LAPACKE_xerbla( "LAPACKE_strevc_work", info );
135 }
136 return info;
137 }
138