# Box2D/Box2D/Common/b2Math.cpp File Reference

`#include <Box2D/Common/b2Math.h>`

## Variables
const b2Vec2 | b2Vec2_zero (0.0f, 0.0f)
const b2Mat22 | b2Mat22_identity (1.0f, 0.0f, 0.0f, 1.0f)
const b2Transform | b2Transform_identity (b2Vec2_zero, b2Mat22_identity)

## Variable Documentation

const b2Mat22 b2Mat22_identity(1.0f, 0.0f, 0.0f, 1.0f)

const b2Transform b2Transform_identity(b2Vec2_zero, b2Mat22_identity)

const b2Vec2 b2Vec2_zero(0.0f, 0.0f)