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

lapack_int LAPACKE_sgbrfsx_work (int matrix_order, char trans, char equed, lapack_int n, lapack_int kl, lapack_int ku, lapack_int nrhs, const float *ab, lapack_int ldab, const float *afb, lapack_int ldafb, const lapack_int *ipiv, const float *r, const float *c, const float *b, lapack_int ldb, float *x, lapack_int ldx, float *rcond, float *berr, lapack_int n_err_bnds, float *err_bnds_norm, float *err_bnds_comp, lapack_int nparams, float *params, float *work, lapack_int *iwork)

Function/Subroutine Documentation

lapack_int LAPACKE_sgbrfsx_work ( int  matrix_order,
char  trans,
char  equed,
lapack_int  n,
lapack_int  kl,
lapack_int  ku,
lapack_int  nrhs,
const float *  ab,
lapack_int  ldab,
const float *  afb,
lapack_int  ldafb,
const lapack_int ipiv,
const float *  r,
const float *  c,
const float *  b,
lapack_int  ldb,
float *  x,
lapack_int  ldx,
float *  rcond,
float *  berr,
lapack_int  n_err_bnds,
float *  err_bnds_norm,
float *  err_bnds_comp,
lapack_int  nparams,
float *  params,
float *  work,
lapack_int iwork 
)

Definition at line 36 of file lapacke_sgbrfsx_work.c.

{
lapack_int info = 0;
if( matrix_order == LAPACK_COL_MAJOR ) {
/* Call LAPACK function and adjust info */
LAPACK_sgbrfsx( &trans, &equed, &n, &kl, &ku, &nrhs, ab, &ldab, afb,
&ldafb, ipiv, r, c, b, &ldb, x, &ldx, rcond, berr,
&n_err_bnds, err_bnds_norm, err_bnds_comp, &nparams,
params, work, iwork, &info );
if( info < 0 ) {
info = info - 1;
}
} else if( matrix_order == LAPACK_ROW_MAJOR ) {
lapack_int ldab_t = MAX(1,kl+ku+1);
lapack_int ldafb_t = MAX(1,2*kl+ku+1);
lapack_int ldb_t = MAX(1,n);
lapack_int ldx_t = MAX(1,n);
float* ab_t = NULL;
float* afb_t = NULL;
float* b_t = NULL;
float* x_t = NULL;
float* err_bnds_norm_t = NULL;
float* err_bnds_comp_t = NULL;
/* Check leading dimension(s) */
if( ldab < n ) {
info = -9;
LAPACKE_xerbla( "LAPACKE_sgbrfsx_work", info );
return info;
}
if( ldafb < n ) {
info = -11;
LAPACKE_xerbla( "LAPACKE_sgbrfsx_work", info );
return info;
}
if( ldb < nrhs ) {
info = -16;
LAPACKE_xerbla( "LAPACKE_sgbrfsx_work", info );
return info;
}
if( ldx < nrhs ) {
info = -18;
LAPACKE_xerbla( "LAPACKE_sgbrfsx_work", info );
return info;
}
/* Allocate memory for temporary array(s) */
ab_t = (float*)LAPACKE_malloc( sizeof(float) * ldab_t * MAX(1,n) );
if( ab_t == NULL ) {
goto exit_level_0;
}
afb_t = (float*)LAPACKE_malloc( sizeof(float) * ldafb_t * MAX(1,n) );
if( afb_t == NULL ) {
goto exit_level_1;
}
b_t = (float*)LAPACKE_malloc( sizeof(float) * ldb_t * MAX(1,nrhs) );
if( b_t == NULL ) {
goto exit_level_2;
}
x_t = (float*)LAPACKE_malloc( sizeof(float) * ldx_t * MAX(1,nrhs) );
if( x_t == NULL ) {
goto exit_level_3;
}
err_bnds_norm_t = (float*)
LAPACKE_malloc( sizeof(float) * nrhs * MAX(1,n_err_bnds) );
if( err_bnds_norm_t == NULL ) {
goto exit_level_4;
}
err_bnds_comp_t = (float*)
LAPACKE_malloc( sizeof(float) * nrhs * MAX(1,n_err_bnds) );
if( err_bnds_comp_t == NULL ) {
goto exit_level_5;
}
/* Transpose input matrices */
LAPACKE_sgb_trans( matrix_order, n, n, kl, ku, ab, ldab, ab_t, ldab_t );
LAPACKE_sgb_trans( matrix_order, n, n, kl, kl+ku, afb, ldafb, afb_t,
ldafb_t );
LAPACKE_sge_trans( matrix_order, n, nrhs, b, ldb, b_t, ldb_t );
LAPACKE_sge_trans( matrix_order, n, nrhs, x, ldx, x_t, ldx_t );
/* Call LAPACK function and adjust info */
LAPACK_sgbrfsx( &trans, &equed, &n, &kl, &ku, &nrhs, ab_t, &ldab_t,
afb_t, &ldafb_t, ipiv, r, c, b_t, &ldb_t, x_t, &ldx_t,
rcond, berr, &n_err_bnds, err_bnds_norm_t,
err_bnds_comp_t, &nparams, params, work, iwork, &info );
if( info < 0 ) {
info = info - 1;
}
/* Transpose output matrices */
LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
LAPACKE_sge_trans( LAPACK_COL_MAJOR, nrhs, n_err_bnds, err_bnds_norm_t,
nrhs, err_bnds_norm, nrhs );
LAPACKE_sge_trans( LAPACK_COL_MAJOR, nrhs, n_err_bnds, err_bnds_comp_t,
nrhs, err_bnds_comp, nrhs );
/* Release memory and exit */
LAPACKE_free( err_bnds_comp_t );
exit_level_5:
LAPACKE_free( err_bnds_norm_t );
exit_level_4:
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_sgbrfsx_work", info );
}
} else {
info = -1;
LAPACKE_xerbla( "LAPACKE_sgbrfsx_work", info );
}
return info;
}

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