###### (This is the documentation for SDL3, which is the current stable version. SDL2 was the previous version!)

# SDL_expf

Compute the exponential of `x`

.

Defined in <SDL3/SDL_stdinc.h>

## Syntax

## Function Parameters

float |
**x** |
floating point value. |

## Return Value

(float) Returns value of `e^x`

.

The definition of `y = exp(x)`

is `y = e^x`

, where `e`

is the base of the natural logarithm. The inverse is the natural logarithm, SDL_logf.

Domain: `-INF <= x <= INF`

Range: `0 <= y <= INF`

The output will overflow if `exp(x)`

is too large to be represented.

This function operates on single-precision floating point values, use SDL_exp for double-precision floats.

This function may use a different approximation across different versions, platforms and configurations. i.e, it can return a different value given the same input on different machines or operating systems, or if SDL is updated.

## Thread Safety

It is safe to call this function from any thread.

## Version

This function is available since SDL 3.1.3.

## See Also

CategoryAPI, CategoryAPIFunction, CategoryStdinc