"""Stub file for the 'cmath' module."""

import sys
from typing import SupportsComplex, SupportsFloat, Tuple, Union

e: float
pi: float
if sys.version_info >= (3, 6):
    inf: float
    infj: complex
    nan: float
    nanj: complex
    tau: float

_C = Union[SupportsFloat, SupportsComplex]

def acos(x: _C) -> complex: ...
def acosh(x: _C) -> complex: ...
def asin(x: _C) -> complex: ...
def asinh(x: _C) -> complex: ...
def atan(x: _C) -> complex: ...
def atanh(x: _C) -> complex: ...
def cos(x: _C) -> complex: ...
def cosh(x: _C) -> complex: ...
def exp(x: _C) -> complex: ...
if sys.version_info >= (3, 5):
    def isclose(a: _C, b: _C, *, rel_tol: SupportsFloat = ..., abs_tol: SupportsFloat = ...) -> bool: ...
def isinf(z: _C) -> bool: ...
def isnan(z: _C) -> bool: ...
def log(x: _C, base: _C = ...) -> complex: ...
def log10(x: _C) -> complex: ...
def phase(z: _C) -> float: ...
def polar(z: _C) -> Tuple[float, float]: ...
def rect(r: float, phi: float) -> complex: ...
def sin(x: _C) -> complex: ...
def sinh(x: _C) -> complex: ...
def sqrt(x: _C) -> complex: ...
def tan(x: _C) -> complex: ...
def tanh(x: _C) -> complex: ...

if sys.version_info >= (3,):
    def isfinite(z: _C) -> bool: ...