mfbt/tests/TestCountPopulation.cpp

changeset 0
6474c204b198
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/mfbt/tests/TestCountPopulation.cpp	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,32 @@
     1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
     1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
     1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this file,
     1.7 + * You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.8 +
     1.9 +#include "mozilla/MathAlgorithms.h"
    1.10 +
    1.11 +using mozilla::CountPopulation32;
    1.12 +
    1.13 +static void
    1.14 +TestCountPopulation32()
    1.15 +{
    1.16 +  MOZ_RELEASE_ASSERT(CountPopulation32(0xFFFFFFFF) == 32);
    1.17 +  MOZ_RELEASE_ASSERT(CountPopulation32(0xF0FF1000) == 13);
    1.18 +  MOZ_RELEASE_ASSERT(CountPopulation32(0x7F8F0001) == 13);
    1.19 +  MOZ_RELEASE_ASSERT(CountPopulation32(0x3FFF0100) == 15);
    1.20 +  MOZ_RELEASE_ASSERT(CountPopulation32(0x1FF50010) == 12);
    1.21 +  MOZ_RELEASE_ASSERT(CountPopulation32(0x00800000) == 1);
    1.22 +  MOZ_RELEASE_ASSERT(CountPopulation32(0x00400000) == 1);
    1.23 +  MOZ_RELEASE_ASSERT(CountPopulation32(0x00008000) == 1);
    1.24 +  MOZ_RELEASE_ASSERT(CountPopulation32(0x00004000) == 1);
    1.25 +  MOZ_RELEASE_ASSERT(CountPopulation32(0x00000080) == 1);
    1.26 +  MOZ_RELEASE_ASSERT(CountPopulation32(0x00000040) == 1);
    1.27 +  MOZ_RELEASE_ASSERT(CountPopulation32(0x00000001) == 1);
    1.28 +  MOZ_RELEASE_ASSERT(CountPopulation32(0x00000000) == 0);
    1.29 +}
    1.30 +
    1.31 +int main()
    1.32 +{
    1.33 +  TestCountPopulation32();
    1.34 +  return 0;
    1.35 +}

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