math.tanh(x) Return the hyperbolic tangent of x.

cmath.acosh(x) Return the inverse hyperbolic cosine of x. There is one branch cut, extending left from 1 along the

is_qnan(x) Returns True if x is a quiet NaN; otherwise returns False.

denominator Abstract.

create_decimal(num) Creates a new Decimal instance from num but using self as context. Unlike the Decimal

math.e The mathematical constant e = 2.718281..., to available precision.

cmath.exp(x) Return the exponential value e**x.

next_minus(context=None) Return the largest number representable in the given context (or in the current thread’s context if

math.erfc(x) Return the complementary error function at x. The

copy_negate(x) Returns a copy of x with the sign inverted.