Mercurial > trustbridge > nss-cmake-static
diff nspr/pr/src/misc/prlog2.c @ 0:1e5118fa0cb1
This is NSS with a Cmake Buildsyste
To compile a static NSS library for Windows we've used the
Chromium-NSS fork and added a Cmake buildsystem to compile
it statically for Windows. See README.chromium for chromium
changes and README.trustbridge for our modifications.
| author | Andre Heinecke <andre.heinecke@intevation.de> |
|---|---|
| date | Mon, 28 Jul 2014 10:47:06 +0200 |
| parents | |
| children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/nspr/pr/src/misc/prlog2.c Mon Jul 28 10:47:06 2014 +0200 @@ -0,0 +1,27 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "prbit.h" + +/* +** Compute the log of the least power of 2 greater than or equal to n +*/ +PR_IMPLEMENT(PRIntn) PR_CeilingLog2(PRUint32 n) +{ + PRIntn log2; + PR_CEILING_LOG2(log2, n); + return log2; +} + +/* +** Compute the log of the greatest power of 2 less than or equal to n. +** This really just finds the highest set bit in the word. +*/ +PR_IMPLEMENT(PRIntn) PR_FloorLog2(PRUint32 n) +{ + PRIntn log2; + PR_FLOOR_LOG2(log2, n); + return log2; +}