lapacke_zcposv.c

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

#include "lapacke_utils.h"

lapack_int LAPACKE_zcposv( int matrix_layout, char uplo, lapack_int n,
                           lapack_int nrhs, lapack_complex_double* a,
                           lapack_int lda, lapack_complex_double* b,
                           lapack_int ldb, lapack_complex_double* x,
                           lapack_int ldx, lapack_int* iter )
{
    lapack_int info = 0;
    double* rwork = NULL;
    lapack_complex_float* swork = NULL;
    lapack_complex_double* work = NULL;
    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_zcposv", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    /* Optionally check input matrices for NaNs */
    if( LAPACKE_zpo_nancheck( matrix_layout, uplo, n, a, lda ) ) {
        return -5;
    }
    if( LAPACKE_zge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
        return -7;
    }
#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;
    }
    swork = (lapack_complex_float*)
        LAPACKE_malloc( sizeof(lapack_complex_float) *
                        MAX(1,n) * MAX(1,n+nrhs) );
    if( swork == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_1;
    }
    work = (lapack_complex_double*)
        LAPACKE_malloc( sizeof(lapack_complex_double) *
                        MAX(1,n) * MAX(1,nrhs) );
    if( work == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_2;
    }
    /* Call middle-level interface */
    info = LAPACKE_zcposv_work( matrix_layout, uplo, n, nrhs, a, lda, b, ldb, x,
                                ldx, work, swork, rwork, iter );
    /* Release memory and exit */
    LAPACKE_free( work );
exit_level_2:
    LAPACKE_free( swork );
exit_level_1:
    LAPACKE_free( rwork );
exit_level_0:
    if( info == LAPACK_WORK_MEMORY_ERROR ) {
        LAPACKE_xerbla( "LAPACKE_zcposv", info );
    }
    return info;
}