lapacke_sgbrfsx_work.c File Reference

#include "lapacke_utils.h"

Go to the source code of this file.

Functions

lapack_int

LAPACKE_sgbrfsx_work (int matrix_layout, 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 Documentation

LAPACKE_sgbrfsx_work()

lapack_int LAPACKE_sgbrfsx_work	(	int	matrix_layout,
		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 35 of file lapacke_sgbrfsx_work.c.

{
    lapack_int info = 0;
    if( matrix_layout == 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_layout == 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 ) {
            info = LAPACK_TRANSPOSE_MEMORY_ERROR;
            goto exit_level_0;
        }
        afb_t = (float*)LAPACKE_malloc( sizeof(float) * ldafb_t * MAX(1,n) );
        if( afb_t == NULL ) {
            info = LAPACK_TRANSPOSE_MEMORY_ERROR;
            goto exit_level_1;
        }
        b_t = (float*)LAPACKE_malloc( sizeof(float) * ldb_t * MAX(1,nrhs) );
        if( b_t == NULL ) {
            info = LAPACK_TRANSPOSE_MEMORY_ERROR;
            goto exit_level_2;
        }
        x_t = (float*)LAPACKE_malloc( sizeof(float) * ldx_t * MAX(1,nrhs) );
        if( x_t == NULL ) {
            info = LAPACK_TRANSPOSE_MEMORY_ERROR;
            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 ) {
            info = LAPACK_TRANSPOSE_MEMORY_ERROR;
            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 ) {
            info = LAPACK_TRANSPOSE_MEMORY_ERROR;
            goto exit_level_5;
        }
        /* Transpose input matrices */
        LAPACKE_sgb_trans( matrix_layout, n, n, kl, ku, ab, ldab, ab_t, ldab_t );
        LAPACKE_sgb_trans( matrix_layout, n, n, kl, kl+ku, afb, ldafb, afb_t,
                           ldafb_t );
        LAPACKE_sge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
        LAPACKE_sge_trans( matrix_layout, 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:
        if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
            LAPACKE_xerbla( "LAPACKE_sgbrfsx_work", info );
        }
    } else {
        info = -1;
        LAPACKE_xerbla( "LAPACKE_sgbrfsx_work", info );
    }
    return info;
}