LAPACK  3.5.0
LAPACK: Linear Algebra PACKage
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lapacke_zposvx_work.c File Reference
#include "lapacke_utils.h"
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Functions/Subroutines

lapack_int LAPACKE_zposvx_work (int matrix_order, char fact, char uplo, lapack_int n, lapack_int nrhs, lapack_complex_double *a, lapack_int lda, lapack_complex_double *af, lapack_int ldaf, char *equed, double *s, lapack_complex_double *b, lapack_int ldb, lapack_complex_double *x, lapack_int ldx, double *rcond, double *ferr, double *berr, lapack_complex_double *work, double *rwork)

Function/Subroutine Documentation

lapack_int LAPACKE_zposvx_work ( int  matrix_order,
char  fact,
char  uplo,
lapack_int  n,
lapack_int  nrhs,
lapack_complex_double a,
lapack_int  lda,
lapack_complex_double af,
lapack_int  ldaf,
char *  equed,
double *  s,
lapack_complex_double b,
lapack_int  ldb,
lapack_complex_double x,
lapack_int  ldx,
double *  rcond,
double *  ferr,
double *  berr,
lapack_complex_double work,
double *  rwork 
)

Definition at line 36 of file lapacke_zposvx_work.c.

{
lapack_int info = 0;
if( matrix_order == LAPACK_COL_MAJOR ) {
/* Call LAPACK function and adjust info */
LAPACK_zposvx( &fact, &uplo, &n, &nrhs, a, &lda, af, &ldaf, equed, s, b,
&ldb, x, &ldx, rcond, ferr, berr, work, rwork, &info );
if( info < 0 ) {
info = info - 1;
}
} else if( matrix_order == LAPACK_ROW_MAJOR ) {
lapack_int lda_t = MAX(1,n);
lapack_int ldaf_t = MAX(1,n);
lapack_int ldb_t = MAX(1,n);
lapack_int ldx_t = MAX(1,n);
lapack_complex_double* a_t = NULL;
lapack_complex_double* af_t = NULL;
lapack_complex_double* b_t = NULL;
lapack_complex_double* x_t = NULL;
/* Check leading dimension(s) */
if( lda < n ) {
info = -7;
LAPACKE_xerbla( "LAPACKE_zposvx_work", info );
return info;
}
if( ldaf < n ) {
info = -9;
LAPACKE_xerbla( "LAPACKE_zposvx_work", info );
return info;
}
if( ldb < nrhs ) {
info = -13;
LAPACKE_xerbla( "LAPACKE_zposvx_work", info );
return info;
}
if( ldx < nrhs ) {
info = -15;
LAPACKE_xerbla( "LAPACKE_zposvx_work", info );
return info;
}
/* Allocate memory for temporary array(s) */
LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,n) );
if( a_t == NULL ) {
goto exit_level_0;
}
LAPACKE_malloc( sizeof(lapack_complex_double) * ldaf_t * MAX(1,n) );
if( af_t == NULL ) {
goto exit_level_1;
}
ldb_t * MAX(1,nrhs) );
if( b_t == NULL ) {
goto exit_level_2;
}
ldx_t * MAX(1,nrhs) );
if( x_t == NULL ) {
goto exit_level_3;
}
/* Transpose input matrices */
LAPACKE_zpo_trans( matrix_order, uplo, n, a, lda, a_t, lda_t );
if( LAPACKE_lsame( fact, 'f' ) ) {
LAPACKE_zpo_trans( matrix_order, uplo, n, af, ldaf, af_t, ldaf_t );
}
LAPACKE_zge_trans( matrix_order, n, nrhs, b, ldb, b_t, ldb_t );
/* Call LAPACK function and adjust info */
LAPACK_zposvx( &fact, &uplo, &n, &nrhs, a_t, &lda_t, af_t, &ldaf_t,
equed, s, b_t, &ldb_t, x_t, &ldx_t, rcond, ferr, berr,
work, rwork, &info );
if( info < 0 ) {
info = info - 1;
}
/* Transpose output matrices */
if( LAPACKE_lsame( fact, 'e' ) && LAPACKE_lsame( *equed, 'y' ) ) {
LAPACKE_zpo_trans( LAPACK_COL_MAJOR, uplo, n, a_t, lda_t, a, lda );
}
if( LAPACKE_lsame( fact, 'e' ) || LAPACKE_lsame( fact, 'n' ) ) {
LAPACKE_zpo_trans( LAPACK_COL_MAJOR, uplo, n, af_t, ldaf_t, af,
ldaf );
}
LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, b_t, ldb_t, b, ldb );
LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
/* Release memory and exit */
LAPACKE_free( x_t );
exit_level_3:
LAPACKE_free( b_t );
exit_level_2:
LAPACKE_free( af_t );
exit_level_1:
LAPACKE_free( a_t );
exit_level_0:
LAPACKE_xerbla( "LAPACKE_zposvx_work", info );
}
} else {
info = -1;
LAPACKE_xerbla( "LAPACKE_zposvx_work", info );
}
return info;
}

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