lapacke_zpbsvx.c

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* Contents: Native high-level C interface to LAPACK function zpbsvx
* Author: Intel Corporation
* Generated November 2015
*****************************************************************************/

#include "lapacke_utils.h"

lapack_int LAPACKE_zpbsvx( int matrix_layout, char fact, char uplo, lapack_int n,
                           lapack_int kd, lapack_int nrhs,
                           lapack_complex_double* ab, lapack_int ldab,
                           lapack_complex_double* afb, lapack_int ldafb,
                           char* equed, double* s, lapack_complex_double* b,
                           lapack_int ldb, lapack_complex_double* x,
                           lapack_int ldx, double* rcond, double* ferr,
                           double* berr )
{
    lapack_int info = 0;
    double* rwork = NULL;
    lapack_complex_double* work = NULL;
    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_zpbsvx", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    /* Optionally check input matrices for NaNs */
    if( LAPACKE_zpb_nancheck( matrix_layout, uplo, n, kd, ab, ldab ) ) {
        return -7;
    }
    if( LAPACKE_lsame( fact, 'f' ) ) {
        if( LAPACKE_zpb_nancheck( matrix_layout, uplo, n, kd, afb, ldafb ) ) {
            return -9;
        }
    }
    if( LAPACKE_zge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
        return -13;
    }
    if( LAPACKE_lsame( fact, 'f' ) && LAPACKE_lsame( *equed, 'y' ) ) {
        if( LAPACKE_d_nancheck( n, s, 1 ) ) {
            return -12;
        }
    }
#endif
    /* Allocate memory for working array(s) */
    rwork = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,n) );
    if( rwork == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_0;
    }
    work = (lapack_complex_double*)
        LAPACKE_malloc( sizeof(lapack_complex_double) * MAX(1,2*n) );
    if( work == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_1;
    }
    /* Call middle-level interface */
    info = LAPACKE_zpbsvx_work( matrix_layout, fact, uplo, n, kd, nrhs, ab, ldab,
                                afb, ldafb, equed, s, b, ldb, x, ldx, rcond,
                                ferr, berr, 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_zpbsvx", info );
    }
    return info;
}