libc/string/strspn.c

   1 /*
   2  * Copyright (C) 2002     Manuel Novoa III
   3  * Copyright (C) 2000-2005 Erik Andersen <andersen@uclibc.org>
   4  *
   5  * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
   6  */
   7
   8 #include "_string.h"
   9
  10 #ifdef WANT_WIDE
  11 # define Wstrspn wcsspn
  12 #else
  13 # define Wstrspn strspn
  14 #endif
  15
  16 size_t Wstrspn(const Wchar *s1, const Wchar *s2)
  17 {
  18         register const Wchar *s = s1;
  19         register const Wchar *p = s2;
  20
  21         while (*p) {
  22                 if (*p++ == *s) {
  23                         ++s;
  24                         p = s2;
  25                 }
  26         }
  27         return s - s1;
  28 }
  29 libc_hidden_def(Wstrspn)