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28 *****************************************************************************
29 * Contents: Native middle-level C interface to LAPACK function zhpgvx
30 * Author: Intel Corporation
31 * Generated November 2015
32 *****************************************************************************/
33
34 #include "lapacke_utils.h"
35
LAPACKE_zhpgvx_work(int matrix_layout,lapack_int itype,char jobz,char range,char uplo,lapack_int n,lapack_complex_double * ap,lapack_complex_double * bp,double vl,double vu,lapack_int il,lapack_int iu,double abstol,lapack_int * m,double * w,lapack_complex_double * z,lapack_int ldz,lapack_complex_double * work,double * rwork,lapack_int * iwork,lapack_int * ifail)36 lapack_int LAPACKE_zhpgvx_work( int matrix_layout, lapack_int itype, char jobz,
37 char range, char uplo, lapack_int n,
38 lapack_complex_double* ap,
39 lapack_complex_double* bp, double vl, double vu,
40 lapack_int il, lapack_int iu, double abstol,
41 lapack_int* m, double* w,
42 lapack_complex_double* z, lapack_int ldz,
43 lapack_complex_double* work, double* rwork,
44 lapack_int* iwork, 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_zhpgvx( &itype, &jobz, &range, &uplo, &n, ap, bp, &vl, &vu, &il,
50 &iu, &abstol, m, w, z, &ldz, work, rwork, iwork, ifail,
51 &info );
52 if( info < 0 ) {
53 info = info - 1;
54 }
55 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
56 lapack_int ncols_z = ( LAPACKE_lsame( range, 'a' ) ||
57 LAPACKE_lsame( range, 'v' ) ) ? n :
58 ( LAPACKE_lsame( range, 'i' ) ? (iu-il+1) : 1);
59 lapack_int ldz_t = MAX(1,n);
60 lapack_complex_double* z_t = NULL;
61 lapack_complex_double* ap_t = NULL;
62 lapack_complex_double* bp_t = NULL;
63 /* Check leading dimension(s) */
64 if( ldz < ncols_z ) {
65 info = -17;
66 LAPACKE_xerbla( "LAPACKE_zhpgvx_work", info );
67 return info;
68 }
69 /* Allocate memory for temporary array(s) */
70 if( LAPACKE_lsame( jobz, 'v' ) ) {
71 z_t = (lapack_complex_double*)
72 LAPACKE_malloc( sizeof(lapack_complex_double) *
73 ldz_t * MAX(1,ncols_z) );
74 if( z_t == NULL ) {
75 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
76 goto exit_level_0;
77 }
78 }
79 ap_t = (lapack_complex_double*)
80 LAPACKE_malloc( sizeof(lapack_complex_double) *
81 ( MAX(1,n) * MAX(2,n+1) ) / 2 );
82 if( ap_t == NULL ) {
83 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
84 goto exit_level_1;
85 }
86 bp_t = (lapack_complex_double*)
87 LAPACKE_malloc( sizeof(lapack_complex_double) *
88 ( MAX(1,n) * MAX(2,n+1) ) / 2 );
89 if( bp_t == NULL ) {
90 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
91 goto exit_level_2;
92 }
93 /* Transpose input matrices */
94 LAPACKE_zhp_trans( matrix_layout, uplo, n, ap, ap_t );
95 LAPACKE_zhp_trans( matrix_layout, uplo, n, bp, bp_t );
96 /* Call LAPACK function and adjust info */
97 LAPACK_zhpgvx( &itype, &jobz, &range, &uplo, &n, ap_t, bp_t, &vl, &vu,
98 &il, &iu, &abstol, m, w, z_t, &ldz_t, work, rwork, iwork,
99 ifail, &info );
100 if( info < 0 ) {
101 info = info - 1;
102 }
103 /* Transpose output matrices */
104 if( LAPACKE_lsame( jobz, 'v' ) ) {
105 LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, ncols_z, z_t, ldz_t, z,
106 ldz );
107 }
108 LAPACKE_zhp_trans( LAPACK_COL_MAJOR, uplo, n, ap_t, ap );
109 LAPACKE_zhp_trans( LAPACK_COL_MAJOR, uplo, n, bp_t, bp );
110 /* Release memory and exit */
111 LAPACKE_free( bp_t );
112 exit_level_2:
113 LAPACKE_free( ap_t );
114 exit_level_1:
115 if( LAPACKE_lsame( jobz, 'v' ) ) {
116 LAPACKE_free( z_t );
117 }
118 exit_level_0:
119 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
120 LAPACKE_xerbla( "LAPACKE_zhpgvx_work", info );
121 }
122 } else {
123 info = -1;
124 LAPACKE_xerbla( "LAPACKE_zhpgvx_work", info );
125 }
126 return info;
127 }
128