SDL Wiki
(This is the documentation for SDL3, which is under heavy development and the API is changing! SDL2 is the current stable version!)


Report if a character is whitespace.

Header File

Defined in <SDL3/SDL_stdinc.h>


int SDL_isspace(int x);

Function Parameters

x character value to check.

Return Value

Returns non-zero if x falls within the character class, zero otherwise.


WARNING: Regardless of system locale, this will only treat the following ASCII values as true:

Thread Safety

It is safe to call this function from any thread.


This function is available since SDL 3.0.0.

CategoryAPI, CategoryAPIFunction, CategoryStdinc

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