lapacke_cgbsvxx.c

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* Contents: Native high-level C interface to LAPACK function cgbsvxx
* Author: Intel Corporation
*****************************************************************************/
 
#include "lapacke_utils.h"
 
lapack_int LAPACKE_cgbsvxx( int matrix_layout, char fact, char trans,
                            lapack_int n, lapack_int kl, lapack_int ku,
                            lapack_int nrhs, lapack_complex_float* ab,
                            lapack_int ldab, lapack_complex_float* afb,
                            lapack_int ldafb, lapack_int* ipiv, char* equed,
                            float* r, float* c, lapack_complex_float* b,
                            lapack_int ldb, lapack_complex_float* x,
                            lapack_int ldx, float* rcond, float* rpvgrw,
                            float* berr, lapack_int n_err_bnds,
                            float* err_bnds_norm, float* err_bnds_comp,
                            lapack_int nparams, float* params )
{
    lapack_int info = 0;
    float* rwork = NULL;
    lapack_complex_float* work = NULL;
    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_cgbsvxx", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    if( LAPACKE_get_nancheck() ) {
        /* Optionally check input matrices for NaNs */
        if( LAPACKE_cgb_nancheck( matrix_layout, n, n, kl, ku, ab, ldab ) ) {
            return -8;
        }
        if( LAPACKE_lsame( fact, 'f' ) ) {
            if( LAPACKE_cgb_nancheck( matrix_layout, n, n, kl, kl+ku, afb,
                ldafb ) ) {
                return -10;
            }
        }
        if( LAPACKE_cge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
            return -16;
        }
        if( LAPACKE_lsame( fact, 'f' ) && ( LAPACKE_lsame( *equed, 'b' ) ||
            LAPACKE_lsame( *equed, 'c' ) ) ) {
            if( LAPACKE_s_nancheck( n, c, 1 ) ) {
                return -15;
            }
        }
        if( nparams>0 ) {
            if( LAPACKE_s_nancheck( nparams, params, 1 ) ) {
                return -27;
            }
        }
        if( LAPACKE_lsame( fact, 'f' ) && ( LAPACKE_lsame( *equed, 'b' ) ||
            LAPACKE_lsame( *equed, 'r' ) ) ) {
            if( LAPACKE_s_nancheck( n, r, 1 ) ) {
                return -14;
            }
        }
    }
#endif
    /* Allocate memory for working array(s) */
    rwork = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,3*n) );
    if( rwork == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_0;
    }
    work = (lapack_complex_float*)
        LAPACKE_malloc( sizeof(lapack_complex_float) * MAX(1,2*n) );
    if( work == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_1;
    }
    /* Call middle-level interface */
    info = LAPACKE_cgbsvxx_work( matrix_layout, fact, trans, n, kl, ku, nrhs, ab,
                                 ldab, afb, ldafb, ipiv, equed, r, c, b, ldb, x,
                                 ldx, rcond, rpvgrw, berr, n_err_bnds,
                                 err_bnds_norm, err_bnds_comp, nparams, params,
                                 work, rwork );
    /* Release memory and exit */
    LAPACKE_free( work );
exit_level_1:
    LAPACKE_free( rwork );
exit_level_0:
    if( info == LAPACK_WORK_MEMORY_ERROR ) {
        LAPACKE_xerbla( "LAPACKE_cgbsvxx", info );
    }
    return info;
}