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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 zunmlq
30 * Author: Intel Corporation
31 * Generated June 2016
32 *****************************************************************************/
33
34 #include "lapacke_utils.h"
35
LAPACKE_zunmlq_work(int matrix_layout,char side,char trans,lapack_int m,lapack_int n,lapack_int k,const lapack_complex_double * a,lapack_int lda,const lapack_complex_double * tau,lapack_complex_double * c,lapack_int ldc,lapack_complex_double * work,lapack_int lwork)36 lapack_int LAPACKE_zunmlq_work( int matrix_layout, char side, char trans,
37 lapack_int m, lapack_int n, lapack_int k,
38 const lapack_complex_double* a, lapack_int lda,
39 const lapack_complex_double* tau,
40 lapack_complex_double* c, lapack_int ldc,
41 lapack_complex_double* work, lapack_int lwork )
42 {
43 lapack_int info = 0;
44 lapack_int r;
45 if( matrix_layout == LAPACK_COL_MAJOR ) {
46 /* Call LAPACK function and adjust info */
47 LAPACK_zunmlq( &side, &trans, &m, &n, &k, a, &lda, tau, c, &ldc, work,
48 &lwork, &info );
49 if( info < 0 ) {
50 info = info - 1;
51 }
52 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
53 r = LAPACKE_lsame( side, 'l' ) ? m : n;
54 lapack_int lda_t = MAX(1,k);
55 lapack_int ldc_t = MAX(1,m);
56 lapack_complex_double* a_t = NULL;
57 lapack_complex_double* c_t = NULL;
58 /* Check leading dimension(s) */
59 if( lda < r ) {
60 info = -8;
61 LAPACKE_xerbla( "LAPACKE_zunmlq_work", info );
62 return info;
63 }
64 if( ldc < n ) {
65 info = -11;
66 LAPACKE_xerbla( "LAPACKE_zunmlq_work", info );
67 return info;
68 }
69 /* Query optimal working array(s) size if requested */
70 if( lwork == -1 ) {
71 LAPACK_zunmlq( &side, &trans, &m, &n, &k, a, &lda_t, tau, c, &ldc_t,
72 work, &lwork, &info );
73 return (info < 0) ? (info - 1) : info;
74 }
75 /* Allocate memory for temporary array(s) */
76 if( LAPACKE_lsame( side, 'l' ) ) {
77 a_t = (lapack_complex_double*)
78 LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,m) );
79 } else {
80 a_t = (lapack_complex_double*)
81 LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,n) );
82 }
83 if( a_t == NULL ) {
84 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
85 goto exit_level_0;
86 }
87 c_t = (lapack_complex_double*)
88 LAPACKE_malloc( sizeof(lapack_complex_double) * ldc_t * MAX(1,n) );
89 if( c_t == NULL ) {
90 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
91 goto exit_level_1;
92 }
93 /* Transpose input matrices */
94 LAPACKE_zge_trans( matrix_layout, k, m, a, lda, a_t, lda_t );
95 LAPACKE_zge_trans( matrix_layout, m, n, c, ldc, c_t, ldc_t );
96 /* Call LAPACK function and adjust info */
97 LAPACK_zunmlq( &side, &trans, &m, &n, &k, a_t, &lda_t, tau, c_t, &ldc_t,
98 work, &lwork, &info );
99 if( info < 0 ) {
100 info = info - 1;
101 }
102 /* Transpose output matrices */
103 LAPACKE_zge_trans( LAPACK_COL_MAJOR, m, n, c_t, ldc_t, c, ldc );
104 /* Release memory and exit */
105 LAPACKE_free( c_t );
106 exit_level_1:
107 LAPACKE_free( a_t );
108 exit_level_0:
109 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
110 LAPACKE_xerbla( "LAPACKE_zunmlq_work", info );
111 }
112 } else {
113 info = -1;
114 LAPACKE_xerbla( "LAPACKE_zunmlq_work", info );
115 }
116 return info;
117 }
118