LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_dposvx_work()

lapack_int LAPACKE_dposvx_work ( int  matrix_layout,
char  fact,
char  uplo,
lapack_int  n,
lapack_int  nrhs,
double *  a,
lapack_int  lda,
double *  af,
lapack_int  ldaf,
char *  equed,
double *  s,
double *  b,
lapack_int  ldb,
double *  x,
lapack_int  ldx,
double *  rcond,
double *  ferr,
double *  berr,
double *  work,
lapack_int *  iwork 
)

Definition at line 35 of file lapacke_dposvx_work.c.

42{
43 lapack_int info = 0;
44 if( matrix_layout == LAPACK_COL_MAJOR ) {
45 /* Call LAPACK function and adjust info */
46 LAPACK_dposvx( &fact, &uplo, &n, &nrhs, a, &lda, af, &ldaf, equed, s, b,
47 &ldb, x, &ldx, rcond, ferr, berr, work, iwork, &info );
48 if( info < 0 ) {
49 info = info - 1;
50 }
51 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
52 lapack_int lda_t = MAX(1,n);
53 lapack_int ldaf_t = MAX(1,n);
54 lapack_int ldb_t = MAX(1,n);
55 lapack_int ldx_t = MAX(1,n);
56 double* a_t = NULL;
57 double* af_t = NULL;
58 double* b_t = NULL;
59 double* x_t = NULL;
60 /* Check leading dimension(s) */
61 if( lda < n ) {
62 info = -7;
63 LAPACKE_xerbla( "LAPACKE_dposvx_work", info );
64 return info;
65 }
66 if( ldaf < n ) {
67 info = -9;
68 LAPACKE_xerbla( "LAPACKE_dposvx_work", info );
69 return info;
70 }
71 if( ldb < nrhs ) {
72 info = -13;
73 LAPACKE_xerbla( "LAPACKE_dposvx_work", info );
74 return info;
75 }
76 if( ldx < nrhs ) {
77 info = -15;
78 LAPACKE_xerbla( "LAPACKE_dposvx_work", info );
79 return info;
80 }
81 /* Allocate memory for temporary array(s) */
82 a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) );
83 if( a_t == NULL ) {
84 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
85 goto exit_level_0;
86 }
87 af_t = (double*)LAPACKE_malloc( sizeof(double) * ldaf_t * MAX(1,n) );
88 if( af_t == NULL ) {
89 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
90 goto exit_level_1;
91 }
92 b_t = (double*)LAPACKE_malloc( sizeof(double) * ldb_t * MAX(1,nrhs) );
93 if( b_t == NULL ) {
94 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
95 goto exit_level_2;
96 }
97 x_t = (double*)LAPACKE_malloc( sizeof(double) * ldx_t * MAX(1,nrhs) );
98 if( x_t == NULL ) {
99 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
100 goto exit_level_3;
101 }
102 /* Transpose input matrices */
103 LAPACKE_dpo_trans( matrix_layout, uplo, n, a, lda, a_t, lda_t );
104 if( LAPACKE_lsame( fact, 'f' ) ) {
105 LAPACKE_dpo_trans( matrix_layout, uplo, n, af, ldaf, af_t, ldaf_t );
106 }
107 LAPACKE_dge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
108 /* Call LAPACK function and adjust info */
109 LAPACK_dposvx( &fact, &uplo, &n, &nrhs, a_t, &lda_t, af_t, &ldaf_t,
110 equed, s, b_t, &ldb_t, x_t, &ldx_t, rcond, ferr, berr,
111 work, iwork, &info );
112 if( info < 0 ) {
113 info = info - 1;
114 }
115 /* Transpose output matrices */
116 if( LAPACKE_lsame( fact, 'e' ) && LAPACKE_lsame( *equed, 'y' ) ) {
117 LAPACKE_dpo_trans( LAPACK_COL_MAJOR, uplo, n, a_t, lda_t, a, lda );
118 }
119 if( LAPACKE_lsame( fact, 'e' ) || LAPACKE_lsame( fact, 'n' ) ) {
120 LAPACKE_dpo_trans( LAPACK_COL_MAJOR, uplo, n, af_t, ldaf_t, af,
121 ldaf );
122 }
123 LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, nrhs, b_t, ldb_t, b, ldb );
124 LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
125 /* Release memory and exit */
126 LAPACKE_free( x_t );
127exit_level_3:
128 LAPACKE_free( b_t );
129exit_level_2:
130 LAPACKE_free( af_t );
131exit_level_1:
132 LAPACKE_free( a_t );
133exit_level_0:
134 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
135 LAPACKE_xerbla( "LAPACKE_dposvx_work", info );
136 }
137 } else {
138 info = -1;
139 LAPACKE_xerbla( "LAPACKE_dposvx_work", info );
140 }
141 return info;
142}
lapack_int
#define lapack_int
Definition: lapack.h:87
LAPACK_dposvx
#define LAPACK_dposvx(...)
Definition: lapack.h:13140
LAPACK_COL_MAJOR
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
LAPACKE_free
#define LAPACKE_free(p)
Definition: lapacke.h:46
LAPACK_ROW_MAJOR
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
LAPACKE_malloc
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
LAPACK_TRANSPOSE_MEMORY_ERROR
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:56
LAPACKE_lsame
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
LAPACKE_xerbla
void LAPACKE_xerbla(const char *name, lapack_int info)
Definition: lapacke_xerbla.c:36
MAX
#define MAX(x, y)
Definition: lapacke_utils.h:46
LAPACKE_dge_trans
void LAPACKE_dge_trans(int matrix_layout, lapack_int m, lapack_int n, const double *in, lapack_int ldin, double *out, lapack_int ldout)
Definition: lapacke_dge_trans.c:39
LAPACKE_dpo_trans
void LAPACKE_dpo_trans(int matrix_layout, char uplo, lapack_int n, const double *in, lapack_int ldin, double *out, lapack_int ldout)
Definition: lapacke_dpo_trans.c:39
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