1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/js/src/jsapi-tests/testToIntWidth.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,68 @@
1.4 +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
1.5 + * vim: set ts=8 sts=4 et sw=4 tw=99:
1.6 + */
1.7 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.8 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.9 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.10 +
1.11 +#include <math.h>
1.12 +
1.13 +#include "jsapi-tests/tests.h"
1.14 +#include "vm/NumericConversions.h"
1.15 +
1.16 +using js::detail::ToIntWidth;
1.17 +using js::detail::ToUintWidth;
1.18 +
1.19 +BEGIN_TEST(testToUint8TwiceUint8Range)
1.20 +{
1.21 + double d = -256;
1.22 + uint8_t expected = 0;
1.23 + do {
1.24 + CHECK(ToUintWidth<uint8_t>(d) == expected);
1.25 +
1.26 + d++;
1.27 + expected++;
1.28 + } while (d <= 256);
1.29 + return true;
1.30 +}
1.31 +END_TEST(testToUint8TwiceUint8Range)
1.32 +
1.33 +BEGIN_TEST(testToInt8)
1.34 +{
1.35 + double d = -128;
1.36 + int8_t expected = -128;
1.37 + do {
1.38 + CHECK(ToIntWidth<int8_t>(d) == expected);
1.39 +
1.40 + d++;
1.41 + expected++;
1.42 + } while (expected < 127);
1.43 + return true;
1.44 +}
1.45 +END_TEST(testToInt8)
1.46 +
1.47 +BEGIN_TEST(testToUint32Large)
1.48 +{
1.49 + CHECK(ToUintWidth<uint32_t>(pow(2.0, 83)) == 0);
1.50 + CHECK(ToUintWidth<uint32_t>(pow(2.0, 83) + pow(2.0, 31)) == (1U << 31));
1.51 + CHECK(ToUintWidth<uint32_t>(pow(2.0, 83) + 2 * pow(2.0, 31)) == 0);
1.52 + CHECK(ToUintWidth<uint32_t>(pow(2.0, 83) + 3 * pow(2.0, 31)) == (1U << 31));
1.53 + CHECK(ToUintWidth<uint32_t>(pow(2.0, 84)) == 0);
1.54 + CHECK(ToUintWidth<uint32_t>(pow(2.0, 84) + pow(2.0, 31)) == 0);
1.55 + CHECK(ToUintWidth<uint32_t>(pow(2.0, 84) + pow(2.0, 32)) == 0);
1.56 + return true;
1.57 +}
1.58 +END_TEST(testToUint32Large)
1.59 +
1.60 +BEGIN_TEST(testToUint64Large)
1.61 +{
1.62 + CHECK(ToUintWidth<uint64_t>(pow(2.0, 115)) == 0);
1.63 + CHECK(ToUintWidth<uint64_t>(pow(2.0, 115) + pow(2.0, 63)) == (1ULL << 63));
1.64 + CHECK(ToUintWidth<uint64_t>(pow(2.0, 115) + 2 * pow(2.0, 63)) == 0);
1.65 + CHECK(ToUintWidth<uint64_t>(pow(2.0, 115) + 3 * pow(2.0, 63)) == (1ULL << 63));
1.66 + CHECK(ToUintWidth<uint64_t>(pow(2.0, 116)) == 0);
1.67 + CHECK(ToUintWidth<uint64_t>(pow(2.0, 116) + pow(2.0, 63)) == 0);
1.68 + CHECK(ToUintWidth<uint64_t>(pow(2.0, 116) + pow(2.0, 64)) == 0);
1.69 + return true;
1.70 +}
1.71 +END_TEST(testToUint64Large)
