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2 Copyright (c) 2014, Intel Corp.
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28 *****************************************************************************
29 * Contents: Native high-level C interface to LAPACK function sgges
30 * Author: Intel Corporation
31 *****************************************************************************/
32
33 #include "lapacke_utils.h"
34
LAPACKE_sgges(int matrix_layout,char jobvsl,char jobvsr,char sort,LAPACK_S_SELECT3 selctg,lapack_int n,float * a,lapack_int lda,float * b,lapack_int ldb,lapack_int * sdim,float * alphar,float * alphai,float * beta,float * vsl,lapack_int ldvsl,float * vsr,lapack_int ldvsr)35 lapack_int LAPACKE_sgges( int matrix_layout, char jobvsl, char jobvsr, char sort,
36 LAPACK_S_SELECT3 selctg, lapack_int n, float* a,
37 lapack_int lda, float* b, lapack_int ldb,
38 lapack_int* sdim, float* alphar, float* alphai,
39 float* beta, float* vsl, lapack_int ldvsl, float* vsr,
40 lapack_int ldvsr )
41 {
42 lapack_int info = 0;
43 lapack_int lwork = -1;
44 lapack_logical* bwork = NULL;
45 float* work = NULL;
46 float work_query;
47 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
48 LAPACKE_xerbla( "LAPACKE_sgges", -1 );
49 return -1;
50 }
51 #ifndef LAPACK_DISABLE_NAN_CHECK
52 if( LAPACKE_get_nancheck() ) {
53 /* Optionally check input matrices for NaNs */
54 if( LAPACKE_sge_nancheck( matrix_layout, n, n, a, lda ) ) {
55 return -7;
56 }
57 if( LAPACKE_sge_nancheck( matrix_layout, n, n, b, ldb ) ) {
58 return -9;
59 }
60 }
61 #endif
62 /* Allocate memory for working array(s) */
63 if( LAPACKE_lsame( sort, 's' ) ) {
64 bwork = (lapack_logical*)
65 LAPACKE_malloc( sizeof(lapack_logical) * MAX(1,n) );
66 if( bwork == NULL ) {
67 info = LAPACK_WORK_MEMORY_ERROR;
68 goto exit_level_0;
69 }
70 }
71 /* Query optimal working array(s) size */
72 info = LAPACKE_sgges_work( matrix_layout, jobvsl, jobvsr, sort, selctg, n, a,
73 lda, b, ldb, sdim, alphar, alphai, beta, vsl,
74 ldvsl, vsr, ldvsr, &work_query, lwork, bwork );
75 if( info != 0 ) {
76 goto exit_level_1;
77 }
78 lwork = (lapack_int)work_query;
79 /* Allocate memory for work arrays */
80 work = (float*)LAPACKE_malloc( sizeof(float) * lwork );
81 if( work == NULL ) {
82 info = LAPACK_WORK_MEMORY_ERROR;
83 goto exit_level_1;
84 }
85 /* Call middle-level interface */
86 info = LAPACKE_sgges_work( matrix_layout, jobvsl, jobvsr, sort, selctg, n, a,
87 lda, b, ldb, sdim, alphar, alphai, beta, vsl,
88 ldvsl, vsr, ldvsr, work, lwork, bwork );
89 /* Release memory and exit */
90 LAPACKE_free( work );
91 exit_level_1:
92 if( LAPACKE_lsame( sort, 's' ) ) {
93 LAPACKE_free( bwork );
94 }
95 exit_level_0:
96 if( info == LAPACK_WORK_MEMORY_ERROR ) {
97 LAPACKE_xerbla( "LAPACKE_sgges", info );
98 }
99 return info;
100 }
101