
{{alias}}( cmach )
    Determines double-precision floating-point machine parameters.

    The `cmach` parameter is a string which specifies the double-precision
    machine parameter to be returned. The function recognizes the following
    characters:

    - 'E'/'e': (eps) relative machine precision.
    - 'S'/'s': (sfmin) safe minimum such that `1/sfmin` does not overflow.
    - 'B'/'b': (base) base of the machine (also known as the radix).
    - 'P'/'p': (prec) `eps*base`.
    - 'N'/'n': (t) number of (base) digits in the mantissa.
    - 'R'/'r': (rnd) `1.0` when rounding occurs in addition and `0.0` otherwise.
    - 'M'/'m': (emin) minimum exponent before (gradual) underflow.
    - 'U'/'u': (rmin) underflow threshold.
    - 'L'/'l': (emax) largest exponent before overflow.
    - 'O'/'o': (rmax) overflow threshold.

    Parameters
    ----------
    cmach: string
        Specifies the value to be returned.

    Returns
    -------
    out: number
        Machine parameter.

    Examples
    --------
    > var y = {{alias}}( 'E' )
    1.1102230246251565e-16
    > y = {{alias}}( 'S' )
    2.2250738585072014e-308
    > y = {{alias}}( 'B' )
    2.0
    > y = {{alias}}( 'P' )
    2.2204460492503131e-16

    See Also
    --------
