Math Module

The math module is a standard library module that provides mathematical functions. Import it with:

import math

Functions are then called as math.isqrt(x), math.sqrt(d), etc.

Note

import math always refers to the standard library module. To import a local file named math.vy, use a relative import: from . import math.

Functions

sqrt(d: decimal) → decimal

Return the square root of the provided decimal number, using the Babylonian square root algorithm. The rounding mode is to round down to the nearest epsilon. For instance, math.sqrt(0.9999999998) == 0.9999999998.

import math

@external
@view
def foo(d: decimal) -> decimal:
    return math.sqrt(d)

>>> ExampleContract.foo(9.0)
3.0

isqrt(x: uint256) → uint256

Return the (integer) square root of the provided integer number, using the Babylonian square root algorithm. The rounding mode is to round down to the nearest integer. For instance, math.isqrt(101) == 10.

import math

@external
@view
def foo(x: uint256) -> uint256:
    return math.isqrt(x)

>>> ExampleContract.foo(101)
10