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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 sormbr
30 * Author: Intel Corporation
31 *****************************************************************************/
32
33 #include "lapacke_utils.h"
34
LAPACKE_sormbr(int matrix_layout,char vect,char side,char trans,lapack_int m,lapack_int n,lapack_int k,const float * a,lapack_int lda,const float * tau,float * c,lapack_int ldc)35 lapack_int LAPACKE_sormbr( int matrix_layout, char vect, char side, char trans,
36 lapack_int m, lapack_int n, lapack_int k,
37 const float* a, lapack_int lda, const float* tau,
38 float* c, lapack_int ldc )
39 {
40 lapack_int info = 0;
41 lapack_int lwork = -1;
42 float* work = NULL;
43 float work_query;
44 lapack_int nq, ar, ac;
45 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
46 LAPACKE_xerbla( "LAPACKE_sormbr", -1 );
47 return -1;
48 }
49 #ifndef LAPACK_DISABLE_NAN_CHECK
50 if( LAPACKE_get_nancheck() ) {
51 /* Optionally check input matrices for NaNs */
52 nq = LAPACKE_lsame( side, 'l' ) ? m : n;
53 ar = LAPACKE_lsame( vect, 'q' ) ? nq : MIN(nq,k);
54 ac = LAPACKE_lsame( vect, 'q' ) ? MIN(nq,k) : nq;
55 if( LAPACKE_sge_nancheck( matrix_layout, ar, ac, a, lda ) ) {
56 return -8;
57 }
58 if( LAPACKE_sge_nancheck( matrix_layout, m, n, c, ldc ) ) {
59 return -11;
60 }
61 if( LAPACKE_s_nancheck( MIN(nq,k), tau, 1 ) ) {
62 return -10;
63 }
64 }
65 #endif
66 /* Query optimal working array(s) size */
67 info = LAPACKE_sormbr_work( matrix_layout, vect, side, trans, m, n, k, a,
68 lda, tau, c, ldc, &work_query, lwork );
69 if( info != 0 ) {
70 goto exit_level_0;
71 }
72 lwork = (lapack_int)work_query;
73 /* Allocate memory for work arrays */
74 work = (float*)LAPACKE_malloc( sizeof(float) * lwork );
75 if( work == NULL ) {
76 info = LAPACK_WORK_MEMORY_ERROR;
77 goto exit_level_0;
78 }
79 /* Call middle-level interface */
80 info = LAPACKE_sormbr_work( matrix_layout, vect, side, trans, m, n, k, a,
81 lda, tau, c, ldc, work, lwork );
82 /* Release memory and exit */
83 LAPACKE_free( work );
84 exit_level_0:
85 if( info == LAPACK_WORK_MEMORY_ERROR ) {
86 LAPACKE_xerbla( "LAPACKE_sormbr", info );
87 }
88 return info;
89 }
90