round(PythonObject,PythonObject) -- round a python object

Description

This calls Python's built-in round function, which round x to n decimal places, or to the nearest integer if n is not given.

i1 : x = (import "math")@@pi

o1 = 3.141592653589793

o1 : PythonObject of class float

i2 : round x

o2 = 3

o2 : PythonObject of class int

i3 : round(3, x)

o3 = 3.142

o3 : PythonObject of class float

Ties are broken by round half to even.

i4 : round toPython 2.5

o4 = 2

o4 : PythonObject of class int

i5 : round toPython 3.5

o5 = 4

o5 : PythonObject of class int

The source of this document is in Python/doc/floating-point.m2:114:0.