lapacke_dpstrf.c

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

#include "lapacke_utils.h"

lapack_int LAPACKE_dpstrf( int matrix_layout, char uplo, lapack_int n, double* a,
                           lapack_int lda, lapack_int* piv, lapack_int* rank,
                           double tol )
{
    lapack_int info = 0;
    double* work = NULL;
    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_dpstrf", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    /* Optionally check input matrices for NaNs */
    if( LAPACKE_dpo_nancheck( matrix_layout, uplo, n, a, lda ) ) {
        return -4;
    }
    if( LAPACKE_d_nancheck( 1, &tol, 1 ) ) {
        return -8;
    }
#endif
    /* Allocate memory for working array(s) */
    work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,2*n) );
    if( work == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_0;
    }
    /* Call middle-level interface */
    info = LAPACKE_dpstrf_work( matrix_layout, uplo, n, a, lda, piv, rank, tol,
                                work );
    /* Release memory and exit */
    LAPACKE_free( work );
exit_level_0:
    if( info == LAPACK_WORK_MEMORY_ERROR ) {
        LAPACKE_xerbla( "LAPACKE_dpstrf", info );
    }
    return info;
}