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SDL_joystick.c: cast the arguments to nibble() to unsigned char.

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This commit is contained in:
Ozkan Sezer 2021-12-18 14:01:02 +03:00
parent 47d3e96b43
commit 82fc67ae4d
1 changed files with 5 additions and 5 deletions
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10
src/joystick/SDL_joystick.c
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@ -2646,18 +2646,18 @@ void SDL_JoystickGetGUIDString(SDL_JoystickGUID guid, char *pszGUID, int cbGUID)
* Input : c -
* Output : unsigned char
*-----------------------------------------------------------------------------*/
static unsigned char nibble(char c)
static unsigned char nibble(unsigned char c)
{
if ((c >= '0') && (c <= '9')) {
return (unsigned char)(c - '0');
return (c - '0');
}
if ((c >= 'A') && (c <= 'F')) {
return (unsigned char)(c - 'A' + 0x0a);
return (c - 'A' + 0x0a);
}
if ((c >= 'a') && (c <= 'f')) {
return (unsigned char)(c - 'a' + 0x0a);
return (c - 'a' + 0x0a);
}
/* received an invalid character, and no real way to return an error */
@ -2681,7 +2681,7 @@ SDL_JoystickGUID SDL_JoystickGetGUIDFromString(const char *pchGUID)
p = (Uint8 *)&guid;
for (i = 0; (i < len) && ((p - (Uint8 *)&guid) < maxoutputbytes); i+=2, p++) {
*p = (nibble(pchGUID[i]) << 4) | nibble(pchGUID[i+1]);
*p = (nibble((unsigned char)pchGUID[i]) << 4) | nibble((unsigned char)pchGUID[i+1]);
}
return guid;