testToSignedOrUnsignedInteger.cpp (2121B)
1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- 2 * vim: set ts=8 sts=2 et sw=2 tw=80: 3 */ 4 /* This Source Code Form is subject to the terms of the Mozilla Public 5 * License, v. 2.0. If a copy of the MPL was not distributed with this 6 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ 7 8 #include <math.h> 9 10 #include "js/Conversions.h" 11 12 #include "jsapi-tests/tests.h" 13 14 using JS::ToSignedInteger; 15 using JS::ToUnsignedInteger; 16 17 BEGIN_TEST(testToUint8TwiceUint8Range) { 18 double d = -256; 19 uint8_t expected = 0; 20 do { 21 CHECK(ToUnsignedInteger<uint8_t>(d) == expected); 22 23 d++; 24 expected++; 25 } while (d <= 256); 26 return true; 27 } 28 END_TEST(testToUint8TwiceUint8Range) 29 30 BEGIN_TEST(testToInt8) { 31 double d = -128; 32 int8_t expected = -128; 33 do { 34 CHECK(ToSignedInteger<int8_t>(d) == expected); 35 36 d++; 37 expected++; 38 } while (expected < 127); 39 return true; 40 } 41 END_TEST(testToInt8) 42 43 BEGIN_TEST(testToUint32Large) { 44 CHECK(ToUnsignedInteger<uint32_t>(pow(2.0, 83)) == 0); 45 CHECK(ToUnsignedInteger<uint32_t>(pow(2.0, 83) + pow(2.0, 31)) == (1U << 31)); 46 CHECK(ToUnsignedInteger<uint32_t>(pow(2.0, 83) + 2 * pow(2.0, 31)) == 0); 47 CHECK(ToUnsignedInteger<uint32_t>(pow(2.0, 83) + 3 * pow(2.0, 31)) == 48 (1U << 31)); 49 CHECK(ToUnsignedInteger<uint32_t>(pow(2.0, 84)) == 0); 50 CHECK(ToUnsignedInteger<uint32_t>(pow(2.0, 84) + pow(2.0, 31)) == 0); 51 CHECK(ToUnsignedInteger<uint32_t>(pow(2.0, 84) + pow(2.0, 32)) == 0); 52 return true; 53 } 54 END_TEST(testToUint32Large) 55 56 BEGIN_TEST(testToUint64Large) { 57 CHECK(ToUnsignedInteger<uint64_t>(pow(2.0, 115)) == 0); 58 CHECK(ToUnsignedInteger<uint64_t>(pow(2.0, 115) + pow(2.0, 63)) == 59 (1ULL << 63)); 60 CHECK(ToUnsignedInteger<uint64_t>(pow(2.0, 115) + 2 * pow(2.0, 63)) == 0); 61 CHECK(ToUnsignedInteger<uint64_t>(pow(2.0, 115) + 3 * pow(2.0, 63)) == 62 (1ULL << 63)); 63 CHECK(ToUnsignedInteger<uint64_t>(pow(2.0, 116)) == 0); 64 CHECK(ToUnsignedInteger<uint64_t>(pow(2.0, 116) + pow(2.0, 63)) == 0); 65 CHECK(ToUnsignedInteger<uint64_t>(pow(2.0, 116) + pow(2.0, 64)) == 0); 66 return true; 67 } 68 END_TEST(testToUint64Large)