###### (This is the documentation for SDL3, which is the current stable version. [SDL2](https://wiki.libsdl.org/SDL2/) was the previous version!)
# SDL_trunc

Truncate `x` to an integer.

## Header File

Defined in [<SDL3/SDL_stdinc.h>](https://github.com/libsdl-org/SDL/blob/main/include/SDL3/SDL_stdinc.h)

## Syntax

```c
double SDL_trunc(double x);
```

## Function Parameters

|        |       |                       |
| ------ | ----- | --------------------- |
| double | **x** | floating point value. |

## Return Value

(double) Returns `x` truncated to an integer.

## Remarks

Rounds `x` to the next closest integer to 0. This is equivalent to removing
the fractional part of `x`, leaving only the integer part.

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

Range: `-INF <= y <= INF`, y integer

This function operates on double-precision floating point values, use
[SDL_truncf](SDL_truncf) for single-precision floats.

## Thread Safety

It is safe to call this function from any thread.

## Version

This function is available since SDL 3.1.3.

## See Also

- [SDL_truncf](SDL_truncf)
- [SDL_fmod](SDL_fmod)
- [SDL_ceil](SDL_ceil)
- [SDL_floor](SDL_floor)
- [SDL_round](SDL_round)
- [SDL_lround](SDL_lround)

----
[CategoryAPI](CategoryAPI), [CategoryAPIFunction](CategoryAPIFunction), [CategoryStdinc](CategoryStdinc)