LAPACKE_shsein()

lapack_int LAPACKE_shsein	(	int	matrix_layout,
		char	job,
		char	eigsrc,
		char	initv,
		lapack_logical *	select,
		lapack_int	n,
		const float *	h,
		lapack_int	ldh,
		float *	wr,
		const float *	wi,
		float *	vl,
		lapack_int	ldvl,
		float *	vr,
		lapack_int	ldvr,
		lapack_int	mm,
		lapack_int *	m,
		lapack_int *	ifaill,
		lapack_int *	ifailr
	)

Definition at line 35 of file lapacke_shsein.c.

{
    lapack_int info = 0;
    float* work = NULL;
    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_shsein", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    if( LAPACKE_get_nancheck() ) {
        /* Optionally check input matrices for NaNs */
        if( LAPACKE_sge_nancheck( matrix_layout, n, n, h, ldh ) ) {
            return -7;
        }
        if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'l' ) ) {
            if( LAPACKE_sge_nancheck( matrix_layout, n, mm, vl, ldvl ) ) {
                return -11;
            }
        }
        if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'r' ) ) {
            if( LAPACKE_sge_nancheck( matrix_layout, n, mm, vr, ldvr ) ) {
                return -13;
            }
        }
        if( LAPACKE_s_nancheck( n, wi, 1 ) ) {
            return -10;
        }
        if( LAPACKE_s_nancheck( n, wr, 1 ) ) {
            return -9;
        }
    }
#endif
    /* Allocate memory for working array(s) */
    work = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,n) * MAX(1,n+2) );
    if( work == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_0;
    }
    /* Call middle-level interface */
    info = LAPACKE_shsein_work( matrix_layout, job, eigsrc, initv, select, n, h,
                                ldh, wr, wi, vl, ldvl, vr, ldvr, mm, m, work,
                                ifaill, ifailr );
    /* Release memory and exit */
    LAPACKE_free( work );
exit_level_0:
    if( info == LAPACK_WORK_MEMORY_ERROR ) {
        LAPACKE_xerbla( "LAPACKE_shsein", info );
    }
    return info;

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