Math Module

The math module provides standard mathematical constants and pure functions.

Constants

• math.PI: The ratio of a circle's circumference to its diameter.
• math.E: Euler's number.
• math.SQRT2: The square root of 2.
• math.LN2: The natural logarithm of 2.
• math.LN10: The natural logarithm of 10.
• math.LOG2E: The base-2 logarithm of E.
• math.LOG10E: The base-10 logarithm of E.

Functions

math.abs(x: Number) -> Number

Returns the absolute value of x.

import math
math.abs(-5.5) # 5.5

math.sqrt(x: Number) -> Number

Returns the square root of x.

import math
math.sqrt(16) # 4

math.pow(x: Number, y: Number) -> Number

Returns x raised to the power of y.

import math
math.pow(2, 3) # 8

math.floor(x: Number) -> Number

Returns the greatest integer less than or equal to x.

import math
math.floor(4.9) # 4

math.ceil(x: Number) -> Number

Returns the smallest integer greater than or equal to x.

import math
math.ceil(4.1) # 5

math.round(x: Number) -> Number

Returns the value of x rounded to the nearest integer.

import math
math.round(4.5) # 5

math.min(x: Number, y: Number) -> Number

Returns the smaller of two numbers.

import math
math.min(10, 5) # 5

math.max(x: Number, y: Number) -> Number

Returns the larger of two numbers.

import math
math.max(10, 5) # 10

math.log(x: Number, base: Number) -> Number

Returns the logarithm of x to the given base.

import math
math.log(100, 10) # 2

math.rand() -> Number

Returns a pseudo-random number between 0 and 1.

import math
math.rand()