1/* 2 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25#include "precompiled.hpp" 26#include "memory/allocation.hpp" 27#include "metaprogramming/isSame.hpp" 28#include "metaprogramming/primitiveConversions.hpp" 29#include "unittest.hpp" 30#include "utilities/debug.hpp" 31 32struct PrimitiveConversionsTestSupport: AllStatic { 33 34 template<size_t byte_size> struct SignedTypeOfSize; 35 template<size_t byte_size> struct UnsignedTypeOfSize; 36 37 template<typename T> struct Signed; 38 template<typename T> struct Unsigned; 39}; 40 41#define DEFINE_CANONICAL_SIGNED_TYPE(T) \ 42 template<> \ 43 struct PrimitiveConversionsTestSupport::SignedTypeOfSize<sizeof(T)> \ 44 : public AllStatic \ 45 { \ 46 typedef T type; \ 47 }; 48 49#define DEFINE_CANONICAL_UNSIGNED_TYPE(T) \ 50 template<> \ 51 struct PrimitiveConversionsTestSupport::UnsignedTypeOfSize<sizeof(T)> \ 52 : public AllStatic \ 53 { \ 54 typedef T type; \ 55 }; 56 57#define DEFINE_INTEGER_TYPES_OF_SIZE(NBITS) \ 58 DEFINE_CANONICAL_SIGNED_TYPE(int ## NBITS ## _t) \ 59 DEFINE_CANONICAL_UNSIGNED_TYPE(uint ## NBITS ## _t) 60 61DEFINE_INTEGER_TYPES_OF_SIZE(8) 62DEFINE_INTEGER_TYPES_OF_SIZE(16) 63DEFINE_INTEGER_TYPES_OF_SIZE(32) 64DEFINE_INTEGER_TYPES_OF_SIZE(64) 65 66#undef DEFINE_INTEGER_TYPES_OF_SIZE 67#undef DEFINE_CANONICAL_SIGNED_TYPE 68#undef DEFINE_CANONICAL_UNSIGNED_TYPE 69 70template<typename T> 71struct PrimitiveConversionsTestSupport::Signed 72 : public SignedTypeOfSize<sizeof(T)> 73{}; 74 75template<typename T> 76struct PrimitiveConversionsTestSupport::Unsigned 77 : public UnsignedTypeOfSize<sizeof(T)> 78{}; 79 80TEST(PrimitiveConversionsTest, round_trip_int) { 81 int sfive = 5; 82 int mfive = -5; 83 uint ufive = 5u; 84 85 typedef PrimitiveConversionsTestSupport::Signed<int>::type SI; 86 typedef PrimitiveConversionsTestSupport::Unsigned<int>::type UI; 87 88 EXPECT_EQ(sfive, PrimitiveConversions::cast<int>(PrimitiveConversions::cast<SI>(sfive))); 89 EXPECT_EQ(sfive, PrimitiveConversions::cast<int>(PrimitiveConversions::cast<UI>(sfive))); 90 91 EXPECT_EQ(mfive, PrimitiveConversions::cast<int>(PrimitiveConversions::cast<SI>(mfive))); 92 EXPECT_EQ(mfive, PrimitiveConversions::cast<int>(PrimitiveConversions::cast<UI>(mfive))); 93 94 EXPECT_EQ(ufive, PrimitiveConversions::cast<uint>(PrimitiveConversions::cast<SI>(ufive))); 95 EXPECT_EQ(ufive, PrimitiveConversions::cast<uint>(PrimitiveConversions::cast<UI>(ufive))); 96} 97 98TEST(PrimitiveConversionsTest, round_trip_float) { 99 float ffive = 5.0f; 100 double dfive = 5.0; 101 102 typedef PrimitiveConversionsTestSupport::Signed<float>::type SF; 103 typedef PrimitiveConversionsTestSupport::Unsigned<float>::type UF; 104 105 typedef PrimitiveConversionsTestSupport::Signed<double>::type SD; 106 typedef PrimitiveConversionsTestSupport::Unsigned<double>::type UD; 107 108 EXPECT_EQ(ffive, PrimitiveConversions::cast<float>(PrimitiveConversions::cast<SF>(ffive))); 109 EXPECT_EQ(ffive, PrimitiveConversions::cast<float>(PrimitiveConversions::cast<UF>(ffive))); 110 111 EXPECT_EQ(dfive, PrimitiveConversions::cast<double>(PrimitiveConversions::cast<SD>(dfive))); 112 EXPECT_EQ(dfive, PrimitiveConversions::cast<double>(PrimitiveConversions::cast<UD>(dfive))); 113} 114 115TEST(PrimitiveConversionsTest, round_trip_ptr) { 116 int five = 5; 117 int* pfive = &five; 118 const int* cpfive = &five; 119 120 typedef PrimitiveConversionsTestSupport::Signed<int*>::type SIP; 121 typedef PrimitiveConversionsTestSupport::Unsigned<int*>::type UIP; 122 123 EXPECT_EQ(pfive, PrimitiveConversions::cast<int*>(PrimitiveConversions::cast<SIP>(pfive))); 124 EXPECT_EQ(pfive, PrimitiveConversions::cast<int*>(PrimitiveConversions::cast<UIP>(pfive))); 125 126 EXPECT_EQ(cpfive, PrimitiveConversions::cast<const int*>(PrimitiveConversions::cast<SIP>(cpfive))); 127 EXPECT_EQ(cpfive, PrimitiveConversions::cast<const int*>(PrimitiveConversions::cast<UIP>(cpfive))); 128} 129