memchr.c

/*
# _____     ___ ____     ___ ____
#  ____|   |    ____|   |        | |____|
# |     ___|   |____ ___|    ____| |    \    PS2DEV Open Source Project.
#-----------------------------------------------------------------------
# Copyright 2001-2004, ps2dev - http://www.ps2dev.org
# Licenced under Academic Free License version 2.0
# Review ps2sdk README & LICENSE files for further details.
*/
 
#define SYSCLIB_DISABLE_BUILTINS
#include <sysclib.h>
 
void *memchr(const void *s, int c, size_t n)
{
    if (!s || (s32)n <= 0)
    {
        return 0;
    }
    while (1)
    {
        n -= 1;
        if (*(u8 *)s == (u8)c)
        {
            break;
        }
        s = (char *)s + 1;
        if ((s32)n <= 0)
        {
            return 0;
        }
    }
    return (void *)s;
}