fusl/src/string/memrchr.c

#include <string.h>
#include "libc.h"

void* __memrchr(const void* m, int c, size_t n) {
  const unsigned char* s = m;
  c = (unsigned char)c;
  while (n--)
    if (s[n] == c)
      return (void*)(s + n);
  return 0;
}

weak_alias(__memrchr, memrchr);