__doc__ = u"""
    >>> floor_div_float(2, 1.5)
    1.0
    >>> floor_div_float(2, -1.5)
    -2.0
    >>> floor_div_float(-2.3, 1.5)
    -2.0
    >>> floor_div_float(1e10, 1e-10)
    1e+20
"""

def floor_div_float(double a, double b):
    return a // b