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*****************************************************************************
* Contents: Native high-level C interface to LAPACK function cgtsvx
* Author: Intel Corporation
*****************************************************************************/

#include "lapacke_utils.h"

lapack_int LAPACKE_cgtsvx( int matrix_layout, char fact, char trans,
                           lapack_int n, lapack_int nrhs,
                           const lapack_complex_float* dl,
                           const lapack_complex_float* d,
                           const lapack_complex_float* du,
                           lapack_complex_float* dlf, lapack_complex_float* df,
                           lapack_complex_float* duf, lapack_complex_float* du2,
                           lapack_int* ipiv, const lapack_complex_float* b,
                           lapack_int ldb, lapack_complex_float* x,
                           lapack_int ldx, float* rcond, float* ferr,
                           float* berr )
{
    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_cgtsvx", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    if( LAPACKE_get_nancheck() ) {
        /* Optionally check input matrices for NaNs */
        if( LAPACKE_cge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
            return -14;
        }
        if( LAPACKE_c_nancheck( n, d, 1 ) ) {
            return -7;
        }
        if( LAPACKE_lsame( fact, 'f' ) ) {
            if( LAPACKE_c_nancheck( n, df, 1 ) ) {
                return -10;
            }
        }
        if( LAPACKE_c_nancheck( n-1, dl, 1 ) ) {
            return -6;
        }
        if( LAPACKE_lsame( fact, 'f' ) ) {
            if( LAPACKE_c_nancheck( n-1, dlf, 1 ) ) {
                return -9;
            }
        }
        if( LAPACKE_c_nancheck( n-1, du, 1 ) ) {
            return -8;
        }
        if( LAPACKE_lsame( fact, 'f' ) ) {
            if( LAPACKE_c_nancheck( n-2, du2, 1 ) ) {
                return -12;
            }
        }
        if( LAPACKE_lsame( fact, 'f' ) ) {
            if( LAPACKE_c_nancheck( n-1, duf, 1 ) ) {
                return -11;
            }
        }
    }
#endif
    /* Allocate memory for working array(s) */
    rwork = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,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_cgtsvx_work( matrix_layout, fact, trans, n, nrhs, dl, d, du,
                                dlf, df, duf, du2, ipiv, 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_cgtsvx", info );
    }
    return info;
}
