---
name: "SDL_FLT_EPSILON"
section: "3"
platform: "linux"
package: "libsdl3-doc"
version: "3.2.10+ds-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/SDL_FLT_EPSILON"
---

# SDL\_FLT\_EPSILON(3)

Epsilon constant, used for comparing floating-point numbers.

## NAME

SDL\_FLT\_EPSILON - Epsilon constant, used for comparing floating-point numbers.

## HEADER FILE

Defined in SDL3/SDL\_stdinc.h

## SYNOPSIS

```
#include "SDL3/SDL.h"
```

**#define SDL\_FLT\_EPSILON 1.1920928955078125e-07F /\* 0x0.000002p0 \*/**

## DESCRIPTION

Equals by default to platform-defined **FLT\_EPSILON** , or **1.1920928955078125e-07F** if that's not available.

## AVAILABILITY

This macro is available since SDL 3.2.0.