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authorNick Mathewson <nickm@torproject.org>2007-05-24 17:12:57 +0000
committerNick Mathewson <nickm@torproject.org>2007-05-24 17:12:57 +0000
commitd3d86b17a761011f62dc2e06c04c0af8f1a75ef6 (patch)
treeefb329c2d77ef6f39c02db8db62bfa18ad5f4d6d /src/common/util.h
parentd0a5c4f9848f44c46f001428bd3078673033ef19 (diff)
downloadtor-d3d86b17a761011f62dc2e06c04c0af8f1a75ef6.tar.gz
tor-d3d86b17a761011f62dc2e06c04c0af8f1a75ef6.zip
r12916@catbus: nickm | 2007-05-24 12:43:45 -0400
Add math functions to round values to the nearest power of 2. Make mempools more careful about making sure that the size of their chunks is a little less than a power of 2, not a little more. svn:r10304
Diffstat (limited to 'src/common/util.h')
-rw-r--r--src/common/util.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/common/util.h b/src/common/util.h
index 6b32708c5e..f04160935d 100644
--- a/src/common/util.h
+++ b/src/common/util.h
@@ -142,6 +142,10 @@ extern int dmalloc_free(const char *file, const int line, void *pnt,
/** Macro: true if two values have different boolean values. */
#define bool_neq(a,b) (!(a)!=!(b))
+/* Math functions */
+int tor_log2(uint64_t u64) ATTR_CONST;
+uint64_t round_to_power_of_2(uint64_t u64);
+
/* String manipulation */
/** Allowable characters in a hexadecimal string. */