LAPACKE_slascl()

lapack_int LAPACKE_slascl	(	int	matrix_layout,
		char	type,
		lapack_int	kl,
		lapack_int	ku,
		float	cfrom,
		float	cto,
		lapack_int	m,
		lapack_int	n,
		float *	a,
		lapack_int	lda
	)

Definition at line 35 of file lapacke_slascl.c.

{
    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_slascl", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    if( LAPACKE_get_nancheck() ) {
        /* Optionally check input matrices for NaNs */
        switch (type) {
        case 'G':
            if( LAPACKE_sge_nancheck( matrix_layout, m, n, a, lda ) ) {
                return -9;
            }
            break;
        case 'L':
            // TYPE = 'L' - lower triangle of general matrix
            if( matrix_layout == LAPACK_COL_MAJOR &&
                LAPACKE_sgb_nancheck( matrix_layout, m, n, m-1, 0, a, lda+1 ) ) {
                return -9;
            }
            if( matrix_layout == LAPACK_ROW_MAJOR &&
                LAPACKE_sgb_nancheck( LAPACK_COL_MAJOR, n, m, 0, m-1, a-m+1, lda+1 ) ) {
                return -9;
            }
            break;
        case 'U':
            // TYPE = 'U' - upper triangle of general matrix
            if( matrix_layout == LAPACK_COL_MAJOR &&
                LAPACKE_sgb_nancheck( matrix_layout, m, n, 0, n-1, a-n+1, lda+1 ) ) {
                return -9;
            }
            if( matrix_layout == LAPACK_ROW_MAJOR &&
                LAPACKE_sgb_nancheck( LAPACK_COL_MAJOR, n, m, n-1, 0, a, lda+1 ) ) {
                return -9;
            }
            break;
        case 'H':
            // TYPE = 'H' - part of upper Hessenberg matrix in general matrix
            if( matrix_layout == LAPACK_COL_MAJOR &&
                LAPACKE_sgb_nancheck( matrix_layout, m, n, 1, n-1, a-n+1, lda+1 ) ) {
                return -9;
            }
            if( matrix_layout == LAPACK_ROW_MAJOR &&
                LAPACKE_sgb_nancheck( LAPACK_COL_MAJOR, n, m, n-1, 1, a-1, lda+1 ) ) {
                return -9;
            }
        case 'B':
            // TYPE = 'B' - lower part of symmetric band matrix (assume m==n)
            if( LAPACKE_ssb_nancheck( matrix_layout, 'L', n, kl, a, lda ) ) {
                return -9;
            }
            break;
        case 'Q':
            // TYPE = 'Q' - upper part of symmetric band matrix (assume m==n)
            if( LAPACKE_ssb_nancheck( matrix_layout, 'U', n, ku, a, lda ) ) {
                return -9;
            }
            break;
        case 'Z':
            // TYPE = 'Z' -  band matrix laid out for ?GBTRF
            if( matrix_layout == LAPACK_COL_MAJOR &&
                LAPACKE_sgb_nancheck( matrix_layout, m, n, kl, ku, a+kl, lda ) ) {
                return -9;
            }
            if( matrix_layout == LAPACK_ROW_MAJOR &&
                LAPACKE_sgb_nancheck( matrix_layout, m, n, kl, ku, a+lda*kl, lda ) ) {
                return -9;
            }
            break;
        }
    }
#endif
    return LAPACKE_slascl_work( matrix_layout, type, kl, ku, cfrom, cto, m,  n, a, lda );

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