/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 "mozilla/MathAlgorithms.h"
using mozilla::CountLeadingZeroes32;
using mozilla::CountLeadingZeroes64;
using mozilla::CountTrailingZeroes32;
using mozilla::CountTrailingZeroes64;
static void TestLeadingZeroes32() {
MOZ_RELEASE_ASSERT(CountLeadingZeroes32(
0xF0FF1000) ==
0);
MOZ_RELEASE_ASSERT(CountLeadingZeroes32(
0x7F8F0001) ==
1);
MOZ_RELEASE_ASSERT(CountLeadingZeroes32(
0x3FFF0100) ==
2);
MOZ_RELEASE_ASSERT(CountLeadingZeroes32(
0x1FF50010) ==
3);
MOZ_RELEASE_ASSERT(CountLeadingZeroes32(
0x00800000) ==
8);
MOZ_RELEASE_ASSERT(CountLeadingZeroes32(
0x00400000) ==
9);
MOZ_RELEASE_ASSERT(CountLeadingZeroes32(
0x00008000) ==
16);
MOZ_RELEASE_ASSERT(CountLeadingZeroes32(
0x00004000) ==
17);
MOZ_RELEASE_ASSERT(CountLeadingZeroes32(
0x00000080) ==
24);
MOZ_RELEASE_ASSERT(CountLeadingZeroes32(
0x00000040) ==
25);
MOZ_RELEASE_ASSERT(CountLeadingZeroes32(
0x00000001) ==
31);
}
static void TestLeadingZeroes64() {
MOZ_RELEASE_ASSERT(CountLeadingZeroes64(
0xF000F0F010000000) ==
0);
MOZ_RELEASE_ASSERT(CountLeadingZeroes64(
0x70F080F000000001) ==
1);
MOZ_RELEASE_ASSERT(CountLeadingZeroes64(
0x30F0F0F000100000) ==
2);
MOZ_RELEASE_ASSERT(CountLeadingZeroes64(
0x10F0F05000000100) ==
3);
MOZ_RELEASE_ASSERT(CountLeadingZeroes64(
0x0080000000000001) ==
8);
MOZ_RELEASE_ASSERT(CountLeadingZeroes64(
0x0040000010001000) ==
9);
MOZ_RELEASE_ASSERT(CountLeadingZeroes64(
0x000080F010000000) ==
16);
MOZ_RELEASE_ASSERT(CountLeadingZeroes64(
0x000040F010000000) ==
17);
MOZ_RELEASE_ASSERT(CountLeadingZeroes64(
0x0000008000100100) ==
24);
MOZ_RELEASE_ASSERT(CountLeadingZeroes64(
0x0000004100010010) ==
25);
MOZ_RELEASE_ASSERT(CountLeadingZeroes64(
0x0000000080100100) ==
32);
MOZ_RELEASE_ASSERT(CountLeadingZeroes64(
0x0000000041001010) ==
33);
MOZ_RELEASE_ASSERT(CountLeadingZeroes64(
0x0000000000800100) ==
40);
MOZ_RELEASE_ASSERT(CountLeadingZeroes64(
0x0000000000411010) ==
41);
MOZ_RELEASE_ASSERT(CountLeadingZeroes64(
0x0000000000008001) ==
48);
MOZ_RELEASE_ASSERT(CountLeadingZeroes64(
0x0000000000004010) ==
49);
MOZ_RELEASE_ASSERT(CountLeadingZeroes64(
0x0000000000000081) ==
56);
MOZ_RELEASE_ASSERT(CountLeadingZeroes64(
0x0000000000000040) ==
57);
MOZ_RELEASE_ASSERT(CountLeadingZeroes64(
0x0000000000000001) ==
63);
}
static void TestTrailingZeroes32() {
MOZ_RELEASE_ASSERT(CountTrailingZeroes32(
0x0100FFFF) ==
0);
MOZ_RELEASE_ASSERT(CountTrailingZeroes32(
0x7000FFFE) ==
1);
MOZ_RELEASE_ASSERT(CountTrailingZeroes32(
0x0080FFFC) ==
2);
MOZ_RELEASE_ASSERT(CountTrailingZeroes32(
0x0080FFF8) ==
3);
MOZ_RELEASE_ASSERT(CountTrailingZeroes32(
0x010FFF00) ==
8);
MOZ_RELEASE_ASSERT(CountTrailingZeroes32(
0x7000FE00) ==
9);
MOZ_RELEASE_ASSERT(CountTrailingZeroes32(
0x10CF0000) ==
16);
MOZ_RELEASE_ASSERT(CountTrailingZeroes32(
0x0BDE0000) ==
17);
MOZ_RELEASE_ASSERT(CountTrailingZeroes32(
0x0F000000) ==
24);
MOZ_RELEASE_ASSERT(CountTrailingZeroes32(
0xDE000000) ==
25);
MOZ_RELEASE_ASSERT(CountTrailingZeroes32(
0x80000000) ==
31);
}
static void TestTrailingZeroes64() {
MOZ_RELEASE_ASSERT(CountTrailingZeroes64(
0x000100000F0F0F0F) ==
0);
MOZ_RELEASE_ASSERT(CountTrailingZeroes64(
0x070000000F0F0F0E) ==
1);
MOZ_RELEASE_ASSERT(CountTrailingZeroes64(
0x000008000F0F0F0C) ==
2);
MOZ_RELEASE_ASSERT(CountTrailingZeroes64(
0x000008000F0F0F08) ==
3);
MOZ_RELEASE_ASSERT(CountTrailingZeroes64(
0xC001000F0F0F0F00) ==
8);
MOZ_RELEASE_ASSERT(CountTrailingZeroes64(
0x0200000F0F0F0E00) ==
9);
MOZ_RELEASE_ASSERT(CountTrailingZeroes64(
0xB0C10F0FEFDF0000) ==
16);
MOZ_RELEASE_ASSERT(CountTrailingZeroes64(
0x0AAA00F0FF0E0000) ==
17);
MOZ_RELEASE_ASSERT(CountTrailingZeroes64(
0xD010F0FEDF000000) ==
24);
MOZ_RELEASE_ASSERT(CountTrailingZeroes64(
0x7AAF0CF0BE000000) ==
25);
MOZ_RELEASE_ASSERT(CountTrailingZeroes64(
0x20F0A5D100000000) ==
32);
MOZ_RELEASE_ASSERT(CountTrailingZeroes64(
0x489BF0B200000000) ==
33);
MOZ_RELEASE_ASSERT(CountTrailingZeroes64(
0xE0F0D10000000000) ==
40);
MOZ_RELEASE_ASSERT(CountTrailingZeroes64(
0x97F0B20000000000) ==
41);
MOZ_RELEASE_ASSERT(CountTrailingZeroes64(
0x2C07000000000000) ==
48);
MOZ_RELEASE_ASSERT(CountTrailingZeroes64(
0x1FBA000000000000) ==
49);
MOZ_RELEASE_ASSERT(CountTrailingZeroes64(
0x0100000000000000) ==
56);
MOZ_RELEASE_ASSERT(CountTrailingZeroes64(
0x0200000000000000) ==
57);
MOZ_RELEASE_ASSERT(CountTrailingZeroes64(
0x8000000000000000) ==
63);
}
int main() {
TestLeadingZeroes32();
TestLeadingZeroes64();
TestTrailingZeroes32();
TestTrailingZeroes64();
return 0;
}