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Add all missing "is characteristic" stdlib functions

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SDL has been missing a bunch of these 'isX' functions for some time,
where X is some characteristic of a given character.

This commit adds the rest of them to the SDL stdlib, so now we have:
- SDL_isalpha()
- SDL_isalnum()
- SDL_isblank()
- SDL_iscntrl()
- SDL_isxdigit()
- SDL_ispunct()
- SDL_isprint()
- SDL_isgraph()
This commit is contained in:
Misa 2021-02-13 11:21:19 -08:00 • committed by Sam Lantinga
parent 88f1c2c1b0
commit dfe219ec71
4 changed files with 43 additions and 0 deletions
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8
include/SDL_stdinc.h
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@ -440,10 +440,18 @@ extern DECLSPEC int SDLCALL SDL_abs(int x);
#define SDL_min(x, y) (((x) < (y)) ? (x) : (y))
#define SDL_max(x, y) (((x) > (y)) ? (x) : (y))
extern DECLSPEC int SDLCALL SDL_isalpha(int x);
extern DECLSPEC int SDLCALL SDL_isalnum(int x);
extern DECLSPEC int SDLCALL SDL_isblank(int x);
extern DECLSPEC int SDLCALL SDL_iscntrl(int x);
extern DECLSPEC int SDLCALL SDL_isdigit(int x);
extern DECLSPEC int SDLCALL SDL_isxdigit(int x);
extern DECLSPEC int SDLCALL SDL_ispunct(int x);
extern DECLSPEC int SDLCALL SDL_isspace(int x);
extern DECLSPEC int SDLCALL SDL_isupper(int x);
extern DECLSPEC int SDLCALL SDL_islower(int x);
extern DECLSPEC int SDLCALL SDL_isprint(int x);
extern DECLSPEC int SDLCALL SDL_isgraph(int x);
extern DECLSPEC int SDLCALL SDL_toupper(int x);
extern DECLSPEC int SDLCALL SDL_tolower(int x);