summaryrefslogtreecommitdiff
path: root/lib/gl/hash-pjw-bare.h
diff options
context:
space:
mode:
Diffstat (limited to 'lib/gl/hash-pjw-bare.h')
-rw-r--r--lib/gl/hash-pjw-bare.h24
1 files changed, 24 insertions, 0 deletions
diff --git a/lib/gl/hash-pjw-bare.h b/lib/gl/hash-pjw-bare.h
new file mode 100644
index 0000000..eba0653
--- /dev/null
+++ b/lib/gl/hash-pjw-bare.h
@@ -0,0 +1,24 @@
+/* hash-pjw-bare.h -- declaration for a simple hash function
+ Copyright (C) 2012-2019 Free Software Foundation, Inc.
+
+ This program is free software: you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published
+ by the Free Software Foundation; either version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with this program. If not, see <https://www.gnu.org/licenses/>. */
+
+#include <stddef.h>
+
+/* Compute a hash code for a buffer starting at X and of size N,
+ and return the hash code. Note that unlike hash_pjw(), it does not
+ return it modulo a table size.
+ The result is platform dependent: it depends on the size of the 'size_t'
+ type. */
+extern size_t hash_pjw_bare (const void *x, size_t n) _GL_ATTRIBUTE_PURE;