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

lapack_int LAPACKE_cgtrfs_work (int matrix_order, char trans, lapack_int n, lapack_int nrhs, const lapack_complex_float *dl, const lapack_complex_float *d, const lapack_complex_float *du, const lapack_complex_float *dlf, const lapack_complex_float *df, const lapack_complex_float *duf, const lapack_complex_float *du2, const lapack_int *ipiv, const lapack_complex_float *b, lapack_int ldb, lapack_complex_float *x, lapack_int ldx, float *ferr, float *berr, lapack_complex_float *work, float *rwork)

Function/Subroutine Documentation

lapack_int LAPACKE_cgtrfs_work ( int  matrix_order,
char  trans,
lapack_int  n,
lapack_int  nrhs,
const lapack_complex_float dl,
const lapack_complex_float d,
const lapack_complex_float du,
const lapack_complex_float dlf,
const lapack_complex_float df,
const lapack_complex_float duf,
const lapack_complex_float du2,
const lapack_int ipiv,
const lapack_complex_float b,
lapack_int  ldb,
lapack_complex_float x,
lapack_int  ldx,
float *  ferr,
float *  berr,
lapack_complex_float work,
float *  rwork 
)

Definition at line 36 of file lapacke_cgtrfs_work.c.

{
lapack_int info = 0;
if( matrix_order == LAPACK_COL_MAJOR ) {
/* Call LAPACK function and adjust info */
LAPACK_cgtrfs( &trans, &n, &nrhs, dl, d, du, dlf, df, duf, du2, 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_float* b_t = NULL;
lapack_complex_float* x_t = NULL;
/* Check leading dimension(s) */
if( ldb < nrhs ) {
info = -14;
LAPACKE_xerbla( "LAPACKE_cgtrfs_work", info );
return info;
}
if( ldx < nrhs ) {
info = -16;
LAPACKE_xerbla( "LAPACKE_cgtrfs_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;
}
/* Transpose input matrices */
LAPACKE_cge_trans( matrix_order, n, nrhs, b, ldb, b_t, ldb_t );
LAPACKE_cge_trans( matrix_order, n, nrhs, x, ldx, x_t, ldx_t );
/* Call LAPACK function and adjust info */
LAPACK_cgtrfs( &trans, &n, &nrhs, dl, d, du, dlf, df, duf, du2, ipiv,
b_t, &ldb_t, x_t, &ldx_t, ferr, berr, work, rwork,
&info );
if( info < 0 ) {
info = info - 1;
}
/* Transpose output matrices */
LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
/* Release memory and exit */
LAPACKE_free( x_t );
exit_level_1:
LAPACKE_free( b_t );
exit_level_0:
LAPACKE_xerbla( "LAPACKE_cgtrfs_work", info );
}
} else {
info = -1;
LAPACKE_xerbla( "LAPACKE_cgtrfs_work", info );
}
return info;
}

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