michael@0: /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
michael@0:  * vim: set ts=8 sts=4 et sw=4 tw=99:
michael@0:  */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include <math.h>
michael@0: 
michael@0: #include "jsapi-tests/tests.h"
michael@0: #include "vm/NumericConversions.h"
michael@0: 
michael@0: using js::detail::ToIntWidth;
michael@0: using js::detail::ToUintWidth;
michael@0: 
michael@0: BEGIN_TEST(testToUint8TwiceUint8Range)
michael@0: {
michael@0:     double d = -256;
michael@0:     uint8_t expected = 0;
michael@0:     do {
michael@0:         CHECK(ToUintWidth<uint8_t>(d) == expected);
michael@0: 
michael@0:         d++;
michael@0:         expected++;
michael@0:     } while (d <= 256);
michael@0:     return true;
michael@0: }
michael@0: END_TEST(testToUint8TwiceUint8Range)
michael@0: 
michael@0: BEGIN_TEST(testToInt8)
michael@0: {
michael@0:     double d = -128;
michael@0:     int8_t expected = -128;
michael@0:     do {
michael@0:         CHECK(ToIntWidth<int8_t>(d) == expected);
michael@0: 
michael@0:         d++;
michael@0:         expected++;
michael@0:     } while (expected < 127);
michael@0:     return true;
michael@0: }
michael@0: END_TEST(testToInt8)
michael@0: 
michael@0: BEGIN_TEST(testToUint32Large)
michael@0: {
michael@0:     CHECK(ToUintWidth<uint32_t>(pow(2.0, 83)) == 0);
michael@0:     CHECK(ToUintWidth<uint32_t>(pow(2.0, 83) + pow(2.0, 31)) == (1U << 31));
michael@0:     CHECK(ToUintWidth<uint32_t>(pow(2.0, 83) + 2 * pow(2.0, 31)) == 0);
michael@0:     CHECK(ToUintWidth<uint32_t>(pow(2.0, 83) + 3 * pow(2.0, 31)) == (1U << 31));
michael@0:     CHECK(ToUintWidth<uint32_t>(pow(2.0, 84)) == 0);
michael@0:     CHECK(ToUintWidth<uint32_t>(pow(2.0, 84) + pow(2.0, 31)) == 0);
michael@0:     CHECK(ToUintWidth<uint32_t>(pow(2.0, 84) + pow(2.0, 32)) == 0);
michael@0:     return true;
michael@0: }
michael@0: END_TEST(testToUint32Large)
michael@0: 
michael@0: BEGIN_TEST(testToUint64Large)
michael@0: {
michael@0:     CHECK(ToUintWidth<uint64_t>(pow(2.0, 115)) == 0);
michael@0:     CHECK(ToUintWidth<uint64_t>(pow(2.0, 115) + pow(2.0, 63)) == (1ULL << 63));
michael@0:     CHECK(ToUintWidth<uint64_t>(pow(2.0, 115) + 2 * pow(2.0, 63)) == 0);
michael@0:     CHECK(ToUintWidth<uint64_t>(pow(2.0, 115) + 3 * pow(2.0, 63)) == (1ULL << 63));
michael@0:     CHECK(ToUintWidth<uint64_t>(pow(2.0, 116)) == 0);
michael@0:     CHECK(ToUintWidth<uint64_t>(pow(2.0, 116) + pow(2.0, 63)) == 0);
michael@0:     CHECK(ToUintWidth<uint64_t>(pow(2.0, 116) + pow(2.0, 64)) == 0);
michael@0:     return true;
michael@0: }
michael@0: END_TEST(testToUint64Large)