def arctanh(a):
'''Inverse hyperbolic tangent of input'''
return _maths.arctanh(a)
def arctanh(a):
"""Inverse hyperbolic tangent of input"""
return _maths.arctanh(a)
def arctanh(a):
'''Inverse hyperbolic tangent of input'''
return _maths.arctanh(a)
def arctanh(a):
"""Inverse hyperbolic tangent of input"""
return _maths.arctanh(a)