/* Copyright (C) 1994 DJ Delorie, see COPYING.DJ for details */
#include <crtdll/string.h>

size_t
strspn(const char *s1, const char *s2)
{
  const char *p = s1, *spanp;
  char c, sc;

 cont:
  c = *p++;
  for (spanp = s2; (sc = *spanp++) != 0;)
    if (sc == c)
      goto cont;
  return (p - 1 - s1);
}