math.sqrt(x) Return the square root of x.

power(x, y, modulo=None) Return x to the power of y, reduced modulo modulo if given.

decimal.localcontext(ctx=None) Return a context manager that will set the current context for the active thread to a copy of

compare(other, context=None) Compare the values of two Decimal instances. compare() returns a Decimal instance

math.copysign(x, y) Return a float with the magnitude (absolute value) of x but the sign of y. On platforms

create_decimal_from_float(f) Creates a new Decimal instance from a float f but rounding using self as the

math.pow(x, y) Return x raised to the power y. Exceptional cases follow Annex ‘F’ of the C99 standard

fma(other, third, context=None) Fused multiply-add. Return self*other+third with no rounding of the intermediate product self*other

cmath.log10(x) Return the base-10 logarithm of x. This has the same branch cut as log().

math.tan(x) Return the tangent of x radians.