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

lapack_int LAPACKE_zsprfs_work (int matrix_order, char uplo, lapack_int n, lapack_int nrhs, const lapack_complex_double *ap, const lapack_complex_double *afp, const lapack_int *ipiv, const lapack_complex_double *b, lapack_int ldb, lapack_complex_double *x, lapack_int ldx, double *ferr, double *berr, lapack_complex_double *work, double *rwork)

Function/Subroutine Documentation

lapack_int LAPACKE_zsprfs_work ( int  matrix_order,
char  uplo,
lapack_int  n,
lapack_int  nrhs,
const lapack_complex_double ap,
const lapack_complex_double afp,
const lapack_int ipiv,
const lapack_complex_double b,
lapack_int  ldb,
lapack_complex_double x,
lapack_int  ldx,
double *  ferr,
double *  berr,
lapack_complex_double work,
double *  rwork 
)

Definition at line 36 of file lapacke_zsprfs_work.c.

{
lapack_int info = 0;
if( matrix_order == LAPACK_COL_MAJOR ) {
/* Call LAPACK function and adjust info */
LAPACK_zsprfs( &uplo, &n, &nrhs, ap, afp, ipiv, b, &ldb, x, &ldx, ferr,
berr, work, rwork, &info );
if( info < 0 ) {
info = info - 1;
}
} else if( matrix_order == LAPACK_ROW_MAJOR ) {
lapack_int ldb_t = MAX(1,n);
lapack_int ldx_t = MAX(1,n);
lapack_complex_double* b_t = NULL;
lapack_complex_double* x_t = NULL;
lapack_complex_double* ap_t = NULL;
lapack_complex_double* afp_t = NULL;
/* Check leading dimension(s) */
if( ldb < nrhs ) {
info = -9;
LAPACKE_xerbla( "LAPACKE_zsprfs_work", info );
return info;
}
if( ldx < nrhs ) {
info = -11;
LAPACKE_xerbla( "LAPACKE_zsprfs_work", info );
return info;
}
/* Allocate memory for temporary array(s) */
ldb_t * MAX(1,nrhs) );
if( b_t == NULL ) {
goto exit_level_0;
}
ldx_t * MAX(1,nrhs) );
if( x_t == NULL ) {
goto exit_level_1;
}
( MAX(1,n) * MAX(2,n+1) ) / 2 );
if( ap_t == NULL ) {
goto exit_level_2;
}
( MAX(1,n) * MAX(2,n+1) ) / 2 );
if( afp_t == NULL ) {
goto exit_level_3;
}
/* Transpose input matrices */
LAPACKE_zge_trans( matrix_order, n, nrhs, b, ldb, b_t, ldb_t );
LAPACKE_zge_trans( matrix_order, n, nrhs, x, ldx, x_t, ldx_t );
LAPACKE_zsp_trans( matrix_order, uplo, n, ap, ap_t );
LAPACKE_zsp_trans( matrix_order, uplo, n, afp, afp_t );
/* Call LAPACK function and adjust info */
LAPACK_zsprfs( &uplo, &n, &nrhs, ap_t, afp_t, ipiv, b_t, &ldb_t, x_t,
&ldx_t, ferr, berr, work, rwork, &info );
if( info < 0 ) {
info = info - 1;
}
/* Transpose output matrices */
LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
/* Release memory and exit */
LAPACKE_free( afp_t );
exit_level_3:
LAPACKE_free( ap_t );
exit_level_2:
LAPACKE_free( x_t );
exit_level_1:
LAPACKE_free( b_t );
exit_level_0:
LAPACKE_xerbla( "LAPACKE_zsprfs_work", info );
}
} else {
info = -1;
LAPACKE_xerbla( "LAPACKE_zsprfs_work", info );
}
return info;
}

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