def Negative(other_param, mode="<STR_LIT>", reroll_count_max=<NUM_LIT:2>):
return ForceSign(<EOL>other_param=other_param,<EOL>positive=False,<EOL>mode=mode,<EOL>reroll_count_max=reroll_count_max<EOL>)<EOL>
Converts another parameter's results to negative values.

Parameters
----------
other_param : imgaug.parameters.StochasticParameter
    Other parameter which's sampled values are to be
    modified.

mode : {'invert', 'reroll'}, optional
    How to change the signs. Valid values are ``invert`` and ``reroll``.
    ``invert`` means that wrong signs are simply flipped.
    ``reroll`` means that all samples with wrong signs are sampled again,
    optionally many times, until they randomly end up having the correct
    sign.

reroll_count_max : int, optional
    If `mode` is set to ``reroll``, this determines how often values may
    be rerolled before giving up and simply flipping the sign (as in
    ``mode="invert"``). This shouldn't be set too high, as rerolling is
    expensive.

Examples
--------
>>> param = Negative(Normal(0, 1), mode="reroll")

Generates a normal distribution that has only negative values.