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

lapack_int LAPACKE_zpbsvx_work (int matrix_order, char fact, char uplo, lapack_int n, lapack_int kd, lapack_int nrhs, lapack_complex_double *ab, lapack_int ldab, lapack_complex_double *afb, lapack_int ldafb, 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_zpbsvx_work ( int  matrix_order,
char  fact,
char  uplo,
lapack_int  n,
lapack_int  kd,
lapack_int  nrhs,
lapack_complex_double ab,
lapack_int  ldab,
lapack_complex_double afb,
lapack_int  ldafb,
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_zpbsvx_work.c.

{
lapack_int info = 0;
if( matrix_order == LAPACK_COL_MAJOR ) {
/* Call LAPACK function and adjust info */
LAPACK_zpbsvx( &fact, &uplo, &n, &kd, &nrhs, ab, &ldab, afb, &ldafb,
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 ldab_t = MAX(1,kd+1);
lapack_int ldafb_t = MAX(1,kd+1);
lapack_int ldb_t = MAX(1,n);
lapack_int ldx_t = MAX(1,n);
lapack_complex_double* ab_t = NULL;
lapack_complex_double* afb_t = NULL;
lapack_complex_double* b_t = NULL;
lapack_complex_double* x_t = NULL;
/* Check leading dimension(s) */
if( ldab < n ) {
info = -8;
LAPACKE_xerbla( "LAPACKE_zpbsvx_work", info );
return info;
}
if( ldafb < n ) {
info = -10;
LAPACKE_xerbla( "LAPACKE_zpbsvx_work", info );
return info;
}
if( ldb < nrhs ) {
info = -14;
LAPACKE_xerbla( "LAPACKE_zpbsvx_work", info );
return info;
}
if( ldx < nrhs ) {
info = -16;
LAPACKE_xerbla( "LAPACKE_zpbsvx_work", info );
return info;
}
/* Allocate memory for temporary array(s) */
LAPACKE_malloc( sizeof(lapack_complex_double) * ldab_t * MAX(1,n) );
if( ab_t == NULL ) {
goto exit_level_0;
}
ldafb_t * MAX(1,n) );
if( afb_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_zpb_trans( matrix_order, uplo, n, kd, ab, ldab, ab_t, ldab_t );
if( LAPACKE_lsame( fact, 'f' ) ) {
LAPACKE_zpb_trans( matrix_order, uplo, n, kd, afb, ldafb, afb_t,
ldafb_t );
}
LAPACKE_zge_trans( matrix_order, n, nrhs, b, ldb, b_t, ldb_t );
/* Call LAPACK function and adjust info */
LAPACK_zpbsvx( &fact, &uplo, &n, &kd, &nrhs, ab_t, &ldab_t, afb_t,
&ldafb_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_zpb_trans( LAPACK_COL_MAJOR, uplo, n, kd, ab_t, ldab_t, ab,
ldab );
}
if( LAPACKE_lsame( fact, 'e' ) || LAPACKE_lsame( fact, 'n' ) ) {
LAPACKE_zpb_trans( LAPACK_COL_MAJOR, uplo, n, kd, afb_t, ldafb_t,
afb, ldafb );
}
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( afb_t );
exit_level_1:
LAPACKE_free( ab_t );
exit_level_0:
LAPACKE_xerbla( "LAPACKE_zpbsvx_work", info );
}
} else {
info = -1;
LAPACKE_xerbla( "LAPACKE_zpbsvx_work", info );
}
return info;
}

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