diplodocus.org Git - nmh/blob - sbr/strindex.c

   1 /* strindex.c -- "unsigned" lexical index
   2  *
   3  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   4  * COPYRIGHT file in the root directory of the nmh distribution for
   5  * complete copyright information.
   6  */
   7
   8 #include <h/mh.h>
   9
  10 int
  11 stringdex (char *p1, char *p2)
  12 {
  13     char *p;
  14
  15     if (p1 == NULL || p2 == NULL)
  16         return -1;
  17
  18     for (p = p2; *p; p++)
  19         if (uprf (p, p1))
  20             return p - p2;
  21
  22     return -1;
  23 }