opt.py 文件源码

def mul_calculate(num, denum, aslist=False, out_type=None):
    if not num and not denum:
        # Smallest 1 possible.
        if aslist:
            return []
        else:
            return numpy.int8(1)

    # Make sure we do not accidently upcast data types.
    if out_type is None:
        out_dtype = scalar.upcast(*[v.dtype for v in (num + denum)])
    else:
        out_dtype = out_type.dtype
    one = theano._asarray(1, dtype=out_dtype)

    v = reduce(numpy.multiply, num, one) / reduce(numpy.multiply, denum, one)
    if aslist:
        if numpy.all(v == 1):
            return []
        else:
            return [v]
    return v