| /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- |
| * vim: set ts=8 sts=4 et sw=4 tw=99: |
| */ |
| /* 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 "tests.h" |
| |
| #include <math.h> |
| |
| #include "vm/NumericConversions.h" |
| |
| using js::detail::ToIntWidth; |
| using js::detail::ToUintWidth; |
| |
| BEGIN_TEST(testToUint8TwiceUint8Range) |
| { |
| double d = -256; |
| uint8_t expected = 0; |
| do { |
| CHECK(ToUintWidth<uint8_t>(d) == expected); |
| |
| d++; |
| expected++; |
| } while (d <= 256); |
| return true; |
| } |
| END_TEST(testToUint8TwiceUint8Range) |
| |
| BEGIN_TEST(testToInt8) |
| { |
| double d = -128; |
| int8_t expected = -128; |
| do { |
| CHECK(ToIntWidth<int8_t>(d) == expected); |
| |
| d++; |
| expected++; |
| } while (expected < 127); |
| return true; |
| } |
| END_TEST(testToInt8) |
| |
| BEGIN_TEST(testToUint32Large) |
| { |
| CHECK(ToUintWidth<uint32_t>(pow(2.0, 83)) == 0); |
| CHECK(ToUintWidth<uint32_t>(pow(2.0, 83) + pow(2.0, 31)) == (1U << 31)); |
| CHECK(ToUintWidth<uint32_t>(pow(2.0, 83) + 2 * pow(2.0, 31)) == 0); |
| CHECK(ToUintWidth<uint32_t>(pow(2.0, 83) + 3 * pow(2.0, 31)) == (1U << 31)); |
| CHECK(ToUintWidth<uint32_t>(pow(2.0, 84)) == 0); |
| CHECK(ToUintWidth<uint32_t>(pow(2.0, 84) + pow(2.0, 31)) == 0); |
| CHECK(ToUintWidth<uint32_t>(pow(2.0, 84) + pow(2.0, 32)) == 0); |
| return true; |
| } |
| END_TEST(testToUint32Large) |
| |
| BEGIN_TEST(testToUint64Large) |
| { |
| CHECK(ToUintWidth<uint64_t>(pow(2.0, 115)) == 0); |
| CHECK(ToUintWidth<uint64_t>(pow(2.0, 115) + pow(2.0, 63)) == (1ULL << 63)); |
| CHECK(ToUintWidth<uint64_t>(pow(2.0, 115) + 2 * pow(2.0, 63)) == 0); |
| CHECK(ToUintWidth<uint64_t>(pow(2.0, 115) + 3 * pow(2.0, 63)) == (1ULL << 63)); |
| CHECK(ToUintWidth<uint64_t>(pow(2.0, 116)) == 0); |
| CHECK(ToUintWidth<uint64_t>(pow(2.0, 116) + pow(2.0, 63)) == 0); |
| CHECK(ToUintWidth<uint64_t>(pow(2.0, 116) + pow(2.0, 64)) == 0); |
| return true; |
| } |
| END_TEST(testToUint64Large) |