#include <string.h>

char * index (const char * s,int c)
{
register char * __res __asm__("ax");
__asm__("cld\n\t"
	"movb %%al,%%ah\n"
	"1:\tlodsb\n\t"
	"cmpb %%ah,%%al\n\t"
	"je 2f\n\t"
	"testb %%al,%%al\n\t"
	"jne 1b\n\t"
	"movl $1,%1\n"
	"2:\tmovl %1,%0\n\t"
	"decl %0"
	:"=a" (__res):"S" (s),"0" (c):"si");
return __res;
}

char * rindex (const char * s,int c)
{
register char * __res __asm__("dx");
__asm__("cld\n\t"
	"movb %%al,%%ah\n"
	"1:\tlodsb\n\t"
	"cmpb %%ah,%%al\n\t"
	"jne 2f\n\t"
	"movl %%esi,%0\n\t"
	"decl %0\n"
	"2:\ttestb %%al,%%al\n\t"
	"jne 1b"
	:"=d" (__res):"0" (0),"S" (s),"a" (c):"ax","si");
return __res;
}