LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_dsytrf_aa_2stage_work()

lapack_int LAPACKE_dsytrf_aa_2stage_work ( int  matrix_layout,
char  uplo,
lapack_int  n,
double *  a,
lapack_int  lda,
double *  tb,
lapack_int  ltb,
lapack_int ipiv,
lapack_int ipiv2,
double *  work,
lapack_int  lwork 
)

Definition at line 35 of file lapacke_dsytrf_aa_2stage_work.c.

40{
41 lapack_int info = 0;
42 if( matrix_layout == LAPACK_COL_MAJOR ) {
43 /* Call LAPACK function and adjust info */
44 LAPACK_dsytrf_aa_2stage( &uplo, &n, a, &lda, tb,
45 &ltb, ipiv, ipiv2, work, &lwork,
46 &info );
47 if( info < 0 ) {
48 info = info - 1;
49 }
50 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
51 lapack_int lda_t = MAX(1,n);
52 double* a_t = NULL;
53 double* tb_t = NULL;
54 /* Check leading dimension(s) */
55 if( lda < n ) {
56 info = -6;
57 LAPACKE_xerbla( "LAPACKE_dsytrf_aa_2stage_work", info );
58 return info;
59 }
60 if( ltb < 4*n ) {
61 info = -8;
62 LAPACKE_xerbla( "LAPACKE_dsytrf_aa_2stage_work", info );
63 return info;
64 }
65 /* Query optimal working array(s) size if requested */
66 if( lwork == -1 ) {
67 LAPACK_dsytrf_aa_2stage( &uplo, &n, a, &lda_t,
68 tb, &ltb, ipiv, ipiv2, work,
69 &lwork, &info );
70 return (info < 0) ? (info - 1) : info;
71 }
72 /* Allocate memory for temporary array(s) */
73 a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) );
74 if( a_t == NULL ) {
76 goto exit_level_0;
77 }
78 tb_t = (double*)LAPACKE_malloc( sizeof(double) * ltb );
79 if( tb_t == NULL ) {
81 goto exit_level_1;
82 }
83 /* Transpose input matrices */
84 LAPACKE_dsy_trans( matrix_layout, uplo, n, a, lda, a_t, lda_t );
85 /* Call LAPACK function and adjust info */
86 LAPACK_dsytrf_aa_2stage( &uplo, &n, a_t, &lda_t,
87 tb_t, &ltb, ipiv, ipiv2, work,
88 &lwork, &info );
89 if( info < 0 ) {
90 info = info - 1;
91 }
92 /* Transpose output matrices */
93 LAPACKE_dsy_trans( LAPACK_COL_MAJOR, uplo, n, a_t, lda_t, a, lda );
94 /* Release memory and exit */
95 LAPACKE_free( tb_t );
96exit_level_1:
97 LAPACKE_free( a_t );
98exit_level_0:
99 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
100 LAPACKE_xerbla( "LAPACKE_dsytrf_aa_2stage_work", info );
101 }
102 } else {
103 info = -1;
104 LAPACKE_xerbla( "LAPACKE_dsytrf_aa_2stage_work", info );
105 }
106 return info;
107}
#define lapack_int
Definition: lapack.h:87
#define LAPACK_dsytrf_aa_2stage(...)
Definition: lapack.h:18676
#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_dsy_trans(int matrix_layout, char uplo, lapack_int n, const double *in, lapack_int ldin, double *out, lapack_int ldout)
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