LAPACK 3.11.0 LAPACK: Linear Algebra PACKage
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## ◆ LAPACKE_dgetri_work()

 lapack_int LAPACKE_dgetri_work ( int matrix_layout, lapack_int n, double * a, lapack_int lda, const lapack_int * ipiv, double * work, lapack_int lwork )

Definition at line 35 of file lapacke_dgetri_work.c.

38{
39 lapack_int info = 0;
40 if( matrix_layout == LAPACK_COL_MAJOR ) {
41 /* Call LAPACK function and adjust info */
42 LAPACK_dgetri( &n, a, &lda, ipiv, work, &lwork, &info );
43 if( info < 0 ) {
44 info = info - 1;
45 }
46 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
47 lapack_int lda_t = MAX(1,n);
48 double* a_t = NULL;
49 /* Check leading dimension(s) */
50 if( lda < n ) {
51 info = -4;
52 LAPACKE_xerbla( "LAPACKE_dgetri_work", info );
53 return info;
54 }
55 /* Query optimal working array(s) size if requested */
56 if( lwork == -1 ) {
57 LAPACK_dgetri( &n, a, &lda_t, ipiv, work, &lwork, &info );
58 return (info < 0) ? (info - 1) : info;
59 }
60 /* Allocate memory for temporary array(s) */
61 a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) );
62 if( a_t == NULL ) {
64 goto exit_level_0;
65 }
66 /* Transpose input matrices */
67 LAPACKE_dge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
68 /* Call LAPACK function and adjust info */
69 LAPACK_dgetri( &n, a_t, &lda_t, ipiv, work, &lwork, &info );
70 if( info < 0 ) {
71 info = info - 1;
72 }
73 /* Transpose output matrices */
74 LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
75 /* Release memory and exit */
76 LAPACKE_free( a_t );
77exit_level_0:
78 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
79 LAPACKE_xerbla( "LAPACKE_dgetri_work", info );
80 }
81 } else {
82 info = -1;
83 LAPACKE_xerbla( "LAPACKE_dgetri_work", info );
84 }
85 return info;
86}
#define lapack_int
Definition: lapack.h:87
#define LAPACK_dgetri
Definition: lapack.h:4021
#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
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)
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