LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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lapacke_dormrq_work.c
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1/*****************************************************************************
2 Copyright (c) 2014, Intel Corp.
3 All rights reserved.
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6 modification, are permitted provided that the following conditions are met:
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8 * Redistributions of source code must retain the above copyright notice,
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10 * Redistributions in binary form must reproduce the above copyright
11 notice, this list of conditions and the following disclaimer in the
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18 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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28*****************************************************************************
29* Contents: Native middle-level C interface to LAPACK function dormrq
30* Author: Intel Corporation
31*****************************************************************************/
32
33#include "lapacke_utils.h"
34
35lapack_int LAPACKE_dormrq_work( int matrix_layout, char side, char trans,
37 const double* a, lapack_int lda,
38 const double* tau, double* c, lapack_int ldc,
39 double* work, lapack_int lwork )
40{
41 lapack_int info = 0;
42 lapack_int lda_t, ldc_t;
43 double *a_t = NULL, *c_t = NULL;
44 if( matrix_layout == LAPACK_COL_MAJOR ) {
45 /* Call LAPACK function and adjust info */
46 LAPACK_dormrq( &side, &trans, &m, &n, &k, a, &lda, tau, c, &ldc, work,
47 &lwork, &info );
48 if( info < 0 ) {
49 info = info - 1;
50 }
51 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
52 lda_t = MAX(1,k);
53 ldc_t = MAX(1,m);
54 /* Check leading dimension(s) */
55 if( lda < m ) {
56 info = -8;
57 LAPACKE_xerbla( "LAPACKE_dormrq_work", info );
58 return info;
59 }
60 if( ldc < n ) {
61 info = -11;
62 LAPACKE_xerbla( "LAPACKE_dormrq_work", info );
63 return info;
64 }
65 /* Query optimal working array(s) size if requested */
66 if( lwork == -1 ) {
67 LAPACK_dormrq( &side, &trans, &m, &n, &k, a, &lda_t, tau, c, &ldc_t,
68 work, &lwork, &info );
69 return (info < 0) ? (info - 1) : info;
70 }
71 /* Allocate memory for temporary array(s) */
72 a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,m) );
73 if( a_t == NULL ) {
75 goto exit_level_0;
76 }
77 c_t = (double*)LAPACKE_malloc( sizeof(double) * ldc_t * MAX(1,n) );
78 if( c_t == NULL ) {
80 goto exit_level_1;
81 }
82 /* Transpose input matrices */
83 LAPACKE_dge_trans( matrix_layout, k, m, a, lda, a_t, lda_t );
84 LAPACKE_dge_trans( matrix_layout, m, n, c, ldc, c_t, ldc_t );
85 /* Call LAPACK function and adjust info */
86 LAPACK_dormrq( &side, &trans, &m, &n, &k, a_t, &lda_t, tau, c_t, &ldc_t,
87 work, &lwork, &info );
88 if( info < 0 ) {
89 info = info - 1;
90 }
91 /* Transpose output matrices */
92 LAPACKE_dge_trans( LAPACK_COL_MAJOR, m, n, c_t, ldc_t, c, ldc );
93 /* Release memory and exit */
94 LAPACKE_free( c_t );
95exit_level_1:
96 LAPACKE_free( a_t );
97exit_level_0:
98 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
99 LAPACKE_xerbla( "LAPACKE_dormrq_work", info );
100 }
101 } else {
102 info = -1;
103 LAPACKE_xerbla( "LAPACKE_dormrq_work", info );
104 }
105 return info;
106}
#define lapack_int
Definition: lapack.h:87
#define LAPACK_dormrq(...)
Definition: lapack.h:11720
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:56
lapack_int LAPACKE_dormrq_work(int matrix_layout, char side, char trans, lapack_int m, lapack_int n, lapack_int k, const double *a, lapack_int lda, const double *tau, double *c, lapack_int ldc, double *work, lapack_int lwork)
void LAPACKE_xerbla(const char *name, lapack_int info)
#define MAX(x, y)
Definition: lapacke_utils.h:46
void LAPACKE_dge_trans(int matrix_layout, lapack_int m, lapack_int n, const double *in, lapack_int ldin, double *out, lapack_int ldout)