New module 'memchr2'.

[gnulib.git] / lib / memchr2.h

diff --git a/lib/memchr2.h b/lib/memchr2.h
new file mode 100644 (file)
index 0000000..e35b475
--- /dev/null
+++ b/lib/memchr2.h
@@ -0,0 +1,31 @@
+/* Scan memory for the first of two bytes.
+   Copyright (C) 2008 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Return the first address of either C1 or C2 (treated as unsigned
+   char) that occurs within N bytes of the memory region S.  If
+   neither byte appears, return NULL.  */
+
+extern void *memchr2 (void const *s, int c1, int c2, size_t n);
+
+#ifdef __cplusplus
+}
+#endif