Initial revision

1 files changed, 37 insertions, 0 deletions

diff --git a/lib/strcspn.c b/lib/strcspn.c
new file mode 100644
index 0000000000..ea61aa1204
--- /dev/null
+++ b/lib/strcspn.c
@@ -0,0 +1,37 @@
+/* Copyright (C) 1991 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+char *index ();
+
+/* Return the length of the maximum inital segment of S
+   which contains no characters from REJECT.  */
+int
+strcspn (s, reject)
+     register char *s;
+     register char *reject;
+{
+  register int count = 0;
+
+  while (*s != '\0')
+    if (index (reject, *s++) == 0)
+      ++count;
+    else
+      return count;
+
+  return count;
+}