is_infinite(x) Returns True if x is infinite; otherwise returns False.

max_mag(x, y) Compares the values numerically with their sign ignored.

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

math.fsum(iterable) Return an accurate floating point sum of values in the iterable. Avoids loss of precision by tracking multiple

statistics.median_high(data) Return the high median of data. If data is empty, StatisticsError is raised

copy_abs(x) Returns a copy of x with the sign set to 0.

logical_invert(x) Invert all the digits in x.

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

compare_total_mag(x, y) Compares two operands using their abstract representation, ignoring sign.

copy() Return a duplicate of the context.