prettify

lib.h

@@ -9,6 +9,14 @@
 
 #define STDOUT_FILENO 1
 
+__attribute__((always_inline))
+void *memchr(const void *s, int c, size_t n) {
+    uint64_t dispose;
+    void *d;
+    asm("repnz scasb":"=D"(d),"=c"(dispose):"D"(s),"c"(n),"a"(c):"memory","cc");
+    return d;
+}
+
 static
 void write(uint64_t fileno, void *buffer, size_t len) {
     uint64_t a,d;