unittests/ADT/APFloatTest.cpp

   1 //===- llvm/unittest/ADT/APFloat.cpp - APFloat unit tests ---------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #include <ostream>
  11 #include "llvm/Support/raw_ostream.h"
  12 #include "gtest/gtest.h"
  13 #include "llvm/ADT/APFloat.h"
  14 #include "llvm/ADT/SmallString.h"
  15
  16 using namespace llvm;
  17
  18 namespace {
  19
  20 TEST(APFloatTest, Zero) {
  21   EXPECT_EQ(0.0f,  APFloat(APFloat::IEEEsingle,  0.0f).convertToFloat());
  22   EXPECT_EQ(-0.0f, APFloat(APFloat::IEEEsingle, -0.0f).convertToFloat());
  23
  24   EXPECT_EQ(0.0,  APFloat(APFloat::IEEEdouble,  0.0).convertToDouble());
  25   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, -0.0).convertToDouble());
  26 }
  27
  28 TEST(APFloatTest, fromZeroDecimalString) {
  29   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble,  "0").convertToDouble());
  30   EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0").convertToDouble());
  31   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0").convertToDouble());
  32
  33   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble,  "0.").convertToDouble());
  34   EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0.").convertToDouble());
  35   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0.").convertToDouble());
  36
  37   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble,  ".0").convertToDouble());
  38   EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+.0").convertToDouble());
  39   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-.0").convertToDouble());
  40
  41   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble,  "0.0").convertToDouble());
  42   EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0.0").convertToDouble());
  43   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0.0").convertToDouble());
  44
  45   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble,  "00000.").convertToDouble());
  46   EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+00000.").convertToDouble());
  47   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-00000.").convertToDouble());
  48
  49   EXPECT_EQ(0.0,  APFloat(APFloat::IEEEdouble, ".00000").convertToDouble());
  50   EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+.00000").convertToDouble());
  51   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-.00000").convertToDouble());
  52
  53   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble,  "0000.00000").convertToDouble());
  54   EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0000.00000").convertToDouble());
  55   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0000.00000").convertToDouble());
  56 }
  57
  58 TEST(APFloatTest, fromZeroDecimalSingleExponentString) {
  59   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble,   "0e1").convertToDouble());
  60   EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble,  "+0e1").convertToDouble());
  61   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble,  "-0e1").convertToDouble());
  62
  63   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble,  "0e+1").convertToDouble());
  64   EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0e+1").convertToDouble());
  65   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0e+1").convertToDouble());
  66
  67   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble,  "0e-1").convertToDouble());
  68   EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0e-1").convertToDouble());
  69   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0e-1").convertToDouble());
  70
  71
  72   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble,   "0.e1").convertToDouble());
  73   EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble,  "+0.e1").convertToDouble());
  74   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble,  "-0.e1").convertToDouble());
  75
  76   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble,  "0.e+1").convertToDouble());
  77   EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0.e+1").convertToDouble());
  78   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0.e+1").convertToDouble());
  79
  80   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble,  "0.e-1").convertToDouble());
  81   EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0.e-1").convertToDouble());
  82   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0.e-1").convertToDouble());
  83
  84   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble,   ".0e1").convertToDouble());
  85   EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble,  "+.0e1").convertToDouble());
  86   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble,  "-.0e1").convertToDouble());
  87
  88   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble,  ".0e+1").convertToDouble());
  89   EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+.0e+1").convertToDouble());
  90   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-.0e+1").convertToDouble());
  91
  92   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble,  ".0e-1").convertToDouble());
  93   EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+.0e-1").convertToDouble());
  94   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-.0e-1").convertToDouble());
  95
  96
  97   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble,   "0.0e1").convertToDouble());
  98   EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble,  "+0.0e1").convertToDouble());
  99   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble,  "-0.0e1").convertToDouble());
 100
 101   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble,  "0.0e+1").convertToDouble());
 102   EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0.0e+1").convertToDouble());
 103   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0.0e+1").convertToDouble());
 104
 105   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble,  "0.0e-1").convertToDouble());
 106   EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0.0e-1").convertToDouble());
 107   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0.0e-1").convertToDouble());
 108
 109
 110   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble,  "000.0000e1").convertToDouble());
 111   EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+000.0000e+1").convertToDouble());
 112   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-000.0000e+1").convertToDouble());
 113 }
 114
 115 TEST(APFloatTest, fromZeroDecimalLargeExponentString) {
 116   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble,  "0e1234").convertToDouble());
 117   EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0e1234").convertToDouble());
 118   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0e1234").convertToDouble());
 119
 120   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble,  "0e+1234").convertToDouble());
 121   EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0e+1234").convertToDouble());
 122   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0e+1234").convertToDouble());
 123
 124   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble,  "0e-1234").convertToDouble());
 125   EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0e-1234").convertToDouble());
 126   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0e-1234").convertToDouble());
 127
 128   EXPECT_EQ(0.0,  APFloat(APFloat::IEEEdouble, "000.0000e1234").convertToDouble());
 129   EXPECT_EQ(0.0,  APFloat(APFloat::IEEEdouble, "000.0000e-1234").convertToDouble());
 130
 131   EXPECT_EQ(0.0,  APFloat(APFloat::IEEEdouble, StringRef("0e1234\02", 6)).convertToDouble());
 132 }
 133
 134 TEST(APFloatTest, fromZeroHexadecimalString) {
 135   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble,  "0x0p1").convertToDouble());
 136   EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0x0p1").convertToDouble());
 137   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0x0p1").convertToDouble());
 138
 139   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble,  "0x0p+1").convertToDouble());
 140   EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0x0p+1").convertToDouble());
 141   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0x0p+1").convertToDouble());
 142
 143   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble,  "0x0p-1").convertToDouble());
 144   EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0x0p-1").convertToDouble());
 145   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0x0p-1").convertToDouble());
 146
 147
 148   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble,  "0x0.p1").convertToDouble());
 149   EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0x0.p1").convertToDouble());
 150   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0x0.p1").convertToDouble());
 151
 152   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble,  "0x0.p+1").convertToDouble());
 153   EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0x0.p+1").convertToDouble());
 154   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0x0.p+1").convertToDouble());
 155
 156   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble,  "0x0.p-1").convertToDouble());
 157   EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0x0.p-1").convertToDouble());
 158   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0x0.p-1").convertToDouble());
 159
 160
 161   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble,  "0x.0p1").convertToDouble());
 162   EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0x.0p1").convertToDouble());
 163   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0x.0p1").convertToDouble());
 164
 165   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble,  "0x.0p+1").convertToDouble());
 166   EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0x.0p+1").convertToDouble());
 167   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0x.0p+1").convertToDouble());
 168
 169   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble,  "0x.0p-1").convertToDouble());
 170   EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0x.0p-1").convertToDouble());
 171   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0x.0p-1").convertToDouble());
 172
 173
 174   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble,  "0x0.0p1").convertToDouble());
 175   EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0x0.0p1").convertToDouble());
 176   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0x0.0p1").convertToDouble());
 177
 178   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble,  "0x0.0p+1").convertToDouble());
 179   EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0x0.0p+1").convertToDouble());
 180   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0x0.0p+1").convertToDouble());
 181
 182   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble,  "0x0.0p-1").convertToDouble());
 183   EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0x0.0p-1").convertToDouble());
 184   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0x0.0p-1").convertToDouble());
 185
 186
 187   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0x00000.p1").convertToDouble());
 188   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0x0000.00000p1").convertToDouble());
 189   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0x.00000p1").convertToDouble());
 190   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0x0.p1").convertToDouble());
 191   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0x0p1234").convertToDouble());
 192   EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0x0p1234").convertToDouble());
 193   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0x00000.p1234").convertToDouble());
 194   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0x0000.00000p1234").convertToDouble());
 195   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0x.00000p1234").convertToDouble());
 196   EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0x0.p1234").convertToDouble());
 197 }
 198
 199 TEST(APFloatTest, fromDecimalString) {
 200   EXPECT_EQ(1.0,      APFloat(APFloat::IEEEdouble, "1").convertToDouble());
 201   EXPECT_EQ(2.0,      APFloat(APFloat::IEEEdouble, "2.").convertToDouble());
 202   EXPECT_EQ(0.5,      APFloat(APFloat::IEEEdouble, ".5").convertToDouble());
 203   EXPECT_EQ(1.0,      APFloat(APFloat::IEEEdouble, "1.0").convertToDouble());
 204   EXPECT_EQ(-2.0,     APFloat(APFloat::IEEEdouble, "-2").convertToDouble());
 205   EXPECT_EQ(-4.0,     APFloat(APFloat::IEEEdouble, "-4.").convertToDouble());
 206   EXPECT_EQ(-0.5,     APFloat(APFloat::IEEEdouble, "-.5").convertToDouble());
 207   EXPECT_EQ(-1.5,     APFloat(APFloat::IEEEdouble, "-1.5").convertToDouble());
 208   EXPECT_EQ(1.25e12,  APFloat(APFloat::IEEEdouble, "1.25e12").convertToDouble());
 209   EXPECT_EQ(1.25e+12, APFloat(APFloat::IEEEdouble, "1.25e+12").convertToDouble());
 210   EXPECT_EQ(1.25e-12, APFloat(APFloat::IEEEdouble, "1.25e-12").convertToDouble());
 211   EXPECT_EQ(1024.0,   APFloat(APFloat::IEEEdouble, "1024.").convertToDouble());
 212   EXPECT_EQ(1024.05,  APFloat(APFloat::IEEEdouble, "1024.05000").convertToDouble());
 213   EXPECT_EQ(0.05,     APFloat(APFloat::IEEEdouble, ".05000").convertToDouble());
 214   EXPECT_EQ(2.0,      APFloat(APFloat::IEEEdouble, "2.").convertToDouble());
 215   EXPECT_EQ(2.0e2,    APFloat(APFloat::IEEEdouble, "2.e2").convertToDouble());
 216   EXPECT_EQ(2.0e+2,   APFloat(APFloat::IEEEdouble, "2.e+2").convertToDouble());
 217   EXPECT_EQ(2.0e-2,   APFloat(APFloat::IEEEdouble, "2.e-2").convertToDouble());
 218   EXPECT_EQ(2.05e2,    APFloat(APFloat::IEEEdouble, "002.05000e2").convertToDouble());
 219   EXPECT_EQ(2.05e+2,   APFloat(APFloat::IEEEdouble, "002.05000e+2").convertToDouble());
 220   EXPECT_EQ(2.05e-2,   APFloat(APFloat::IEEEdouble, "002.05000e-2").convertToDouble());
 221   EXPECT_EQ(2.05e12,   APFloat(APFloat::IEEEdouble, "002.05000e12").convertToDouble());
 222   EXPECT_EQ(2.05e+12,  APFloat(APFloat::IEEEdouble, "002.05000e+12").convertToDouble());
 223   EXPECT_EQ(2.05e-12,  APFloat(APFloat::IEEEdouble, "002.05000e-12").convertToDouble());
 224 }
 225
 226 TEST(APFloatTest, fromHexadecimalString) {
 227   EXPECT_EQ( 1.0, APFloat(APFloat::IEEEdouble,  "0x1p0").convertToDouble());
 228   EXPECT_EQ(+1.0, APFloat(APFloat::IEEEdouble, "+0x1p0").convertToDouble());
 229   EXPECT_EQ(-1.0, APFloat(APFloat::IEEEdouble, "-0x1p0").convertToDouble());
 230
 231   EXPECT_EQ( 1.0, APFloat(APFloat::IEEEdouble,  "0x1p+0").convertToDouble());
 232   EXPECT_EQ(+1.0, APFloat(APFloat::IEEEdouble, "+0x1p+0").convertToDouble());
 233   EXPECT_EQ(-1.0, APFloat(APFloat::IEEEdouble, "-0x1p+0").convertToDouble());
 234
 235   EXPECT_EQ( 1.0, APFloat(APFloat::IEEEdouble,  "0x1p-0").convertToDouble());
 236   EXPECT_EQ(+1.0, APFloat(APFloat::IEEEdouble, "+0x1p-0").convertToDouble());
 237   EXPECT_EQ(-1.0, APFloat(APFloat::IEEEdouble, "-0x1p-0").convertToDouble());
 238
 239
 240   EXPECT_EQ( 2.0, APFloat(APFloat::IEEEdouble,  "0x1p1").convertToDouble());
 241   EXPECT_EQ(+2.0, APFloat(APFloat::IEEEdouble, "+0x1p1").convertToDouble());
 242   EXPECT_EQ(-2.0, APFloat(APFloat::IEEEdouble, "-0x1p1").convertToDouble());
 243
 244   EXPECT_EQ( 2.0, APFloat(APFloat::IEEEdouble,  "0x1p+1").convertToDouble());
 245   EXPECT_EQ(+2.0, APFloat(APFloat::IEEEdouble, "+0x1p+1").convertToDouble());
 246   EXPECT_EQ(-2.0, APFloat(APFloat::IEEEdouble, "-0x1p+1").convertToDouble());
 247
 248   EXPECT_EQ( 0.5, APFloat(APFloat::IEEEdouble,  "0x1p-1").convertToDouble());
 249   EXPECT_EQ(+0.5, APFloat(APFloat::IEEEdouble, "+0x1p-1").convertToDouble());
 250   EXPECT_EQ(-0.5, APFloat(APFloat::IEEEdouble, "-0x1p-1").convertToDouble());
 251
 252
 253   EXPECT_EQ( 3.0, APFloat(APFloat::IEEEdouble,  "0x1.8p1").convertToDouble());
 254   EXPECT_EQ(+3.0, APFloat(APFloat::IEEEdouble, "+0x1.8p1").convertToDouble());
 255   EXPECT_EQ(-3.0, APFloat(APFloat::IEEEdouble, "-0x1.8p1").convertToDouble());
 256
 257   EXPECT_EQ( 3.0, APFloat(APFloat::IEEEdouble,  "0x1.8p+1").convertToDouble());
 258   EXPECT_EQ(+3.0, APFloat(APFloat::IEEEdouble, "+0x1.8p+1").convertToDouble());
 259   EXPECT_EQ(-3.0, APFloat(APFloat::IEEEdouble, "-0x1.8p+1").convertToDouble());
 260
 261   EXPECT_EQ( 0.75, APFloat(APFloat::IEEEdouble,  "0x1.8p-1").convertToDouble());
 262   EXPECT_EQ(+0.75, APFloat(APFloat::IEEEdouble, "+0x1.8p-1").convertToDouble());
 263   EXPECT_EQ(-0.75, APFloat(APFloat::IEEEdouble, "-0x1.8p-1").convertToDouble());
 264
 265
 266   EXPECT_EQ( 8192.0, APFloat(APFloat::IEEEdouble,  "0x1000.000p1").convertToDouble());
 267   EXPECT_EQ(+8192.0, APFloat(APFloat::IEEEdouble, "+0x1000.000p1").convertToDouble());
 268   EXPECT_EQ(-8192.0, APFloat(APFloat::IEEEdouble, "-0x1000.000p1").convertToDouble());
 269
 270   EXPECT_EQ( 8192.0, APFloat(APFloat::IEEEdouble,  "0x1000.000p+1").convertToDouble());
 271   EXPECT_EQ(+8192.0, APFloat(APFloat::IEEEdouble, "+0x1000.000p+1").convertToDouble());
 272   EXPECT_EQ(-8192.0, APFloat(APFloat::IEEEdouble, "-0x1000.000p+1").convertToDouble());
 273
 274   EXPECT_EQ( 2048.0, APFloat(APFloat::IEEEdouble,  "0x1000.000p-1").convertToDouble());
 275   EXPECT_EQ(+2048.0, APFloat(APFloat::IEEEdouble, "+0x1000.000p-1").convertToDouble());
 276   EXPECT_EQ(-2048.0, APFloat(APFloat::IEEEdouble, "-0x1000.000p-1").convertToDouble());
 277
 278
 279   EXPECT_EQ( 8192.0, APFloat(APFloat::IEEEdouble,  "0x1000p1").convertToDouble());
 280   EXPECT_EQ(+8192.0, APFloat(APFloat::IEEEdouble, "+0x1000p1").convertToDouble());
 281   EXPECT_EQ(-8192.0, APFloat(APFloat::IEEEdouble, "-0x1000p1").convertToDouble());
 282
 283   EXPECT_EQ( 8192.0, APFloat(APFloat::IEEEdouble,  "0x1000p+1").convertToDouble());
 284   EXPECT_EQ(+8192.0, APFloat(APFloat::IEEEdouble, "+0x1000p+1").convertToDouble());
 285   EXPECT_EQ(-8192.0, APFloat(APFloat::IEEEdouble, "-0x1000p+1").convertToDouble());
 286
 287   EXPECT_EQ( 2048.0, APFloat(APFloat::IEEEdouble,  "0x1000p-1").convertToDouble());
 288   EXPECT_EQ(+2048.0, APFloat(APFloat::IEEEdouble, "+0x1000p-1").convertToDouble());
 289   EXPECT_EQ(-2048.0, APFloat(APFloat::IEEEdouble, "-0x1000p-1").convertToDouble());
 290
 291
 292   EXPECT_EQ( 16384.0, APFloat(APFloat::IEEEdouble,  "0x10p10").convertToDouble());
 293   EXPECT_EQ(+16384.0, APFloat(APFloat::IEEEdouble, "+0x10p10").convertToDouble());
 294   EXPECT_EQ(-16384.0, APFloat(APFloat::IEEEdouble, "-0x10p10").convertToDouble());
 295
 296   EXPECT_EQ( 16384.0, APFloat(APFloat::IEEEdouble,  "0x10p+10").convertToDouble());
 297   EXPECT_EQ(+16384.0, APFloat(APFloat::IEEEdouble, "+0x10p+10").convertToDouble());
 298   EXPECT_EQ(-16384.0, APFloat(APFloat::IEEEdouble, "-0x10p+10").convertToDouble());
 299
 300   EXPECT_EQ( 0.015625, APFloat(APFloat::IEEEdouble,  "0x10p-10").convertToDouble());
 301   EXPECT_EQ(+0.015625, APFloat(APFloat::IEEEdouble, "+0x10p-10").convertToDouble());
 302   EXPECT_EQ(-0.015625, APFloat(APFloat::IEEEdouble, "-0x10p-10").convertToDouble());
 303
 304   EXPECT_EQ(1.0625, APFloat(APFloat::IEEEdouble, "0x1.1p0").convertToDouble());
 305   EXPECT_EQ(1.0, APFloat(APFloat::IEEEdouble, "0x1p0").convertToDouble());
 306 }
 307
 308 #ifdef GTEST_HAS_DEATH_TEST
 309 TEST(APFloatTest, SemanticsDeath) {
 310   EXPECT_DEATH(APFloat(APFloat::IEEEsingle, 0.0f).convertToDouble(), "Float semantics are not IEEEdouble");
 311   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, 0.0 ).convertToFloat(),  "Float semantics are not IEEEsingle");
 312 }
 313
 314 TEST(APFloatTest, StringDecimalDeath) {
 315   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  ""), "Invalid string length");
 316   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+"), "String has no digits");
 317   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-"), "String has no digits");
 318
 319   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, StringRef("\0", 1)), "Invalid character in significand");
 320   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, StringRef("1\0", 2)), "Invalid character in significand");
 321   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, StringRef("1\02", 3)), "Invalid character in significand");
 322   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, StringRef("1\02e1", 5)), "Invalid character in significand");
 323   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, StringRef("1e\0", 3)), "Invalid character in exponent");
 324   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, StringRef("1e1\0", 4)), "Invalid character in exponent");
 325   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, StringRef("1e1\02", 5)), "Invalid character in exponent");
 326
 327   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "1.0f"), "Invalid character in significand");
 328
 329   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, ".."), "String contains multiple dots");
 330   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "..0"), "String contains multiple dots");
 331   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "1.0.0"), "String contains multiple dots");
 332 }
 333
 334 TEST(APFloatTest, StringDecimalSignificandDeath) {
 335   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  "."), "Significand has no digits");
 336   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+."), "Significand has no digits");
 337   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-."), "Significand has no digits");
 338
 339
 340   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  "e"), "Significand has no digits");
 341   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+e"), "Significand has no digits");
 342   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-e"), "Significand has no digits");
 343
 344   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  "e1"), "Significand has no digits");
 345   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+e1"), "Significand has no digits");
 346   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-e1"), "Significand has no digits");
 347
 348   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  ".e1"), "Significand has no digits");
 349   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+.e1"), "Significand has no digits");
 350   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-.e1"), "Significand has no digits");
 351
 352
 353   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  ".e"), "Significand has no digits");
 354   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+.e"), "Significand has no digits");
 355   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-.e"), "Significand has no digits");
 356 }
 357
 358 TEST(APFloatTest, StringDecimalExponentDeath) {
 359   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,   "1e"), "Exponent has no digits");
 360   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  "+1e"), "Exponent has no digits");
 361   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  "-1e"), "Exponent has no digits");
 362
 363   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,   "1.e"), "Exponent has no digits");
 364   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  "+1.e"), "Exponent has no digits");
 365   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  "-1.e"), "Exponent has no digits");
 366
 367   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,   ".1e"), "Exponent has no digits");
 368   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  "+.1e"), "Exponent has no digits");
 369   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  "-.1e"), "Exponent has no digits");
 370
 371   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,   "1.1e"), "Exponent has no digits");
 372   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  "+1.1e"), "Exponent has no digits");
 373   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  "-1.1e"), "Exponent has no digits");
 374
 375
 376   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "1e+"), "Exponent has no digits");
 377   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "1e-"), "Exponent has no digits");
 378
 379   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  ".1e"), "Exponent has no digits");
 380   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, ".1e+"), "Exponent has no digits");
 381   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, ".1e-"), "Exponent has no digits");
 382
 383   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  "1.0e"), "Exponent has no digits");
 384   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "1.0e+"), "Exponent has no digits");
 385   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "1.0e-"), "Exponent has no digits");
 386 }
 387
 388 TEST(APFloatTest, StringHexadecimalDeath) {
 389   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  "0x"), "Invalid string");
 390   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x"), "Invalid string");
 391   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x"), "Invalid string");
 392
 393   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  "0x0"), "Hex strings require an exponent");
 394   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x0"), "Hex strings require an exponent");
 395   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x0"), "Hex strings require an exponent");
 396
 397   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  "0x0."), "Hex strings require an exponent");
 398   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x0."), "Hex strings require an exponent");
 399   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x0."), "Hex strings require an exponent");
 400
 401   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  "0x.0"), "Hex strings require an exponent");
 402   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x.0"), "Hex strings require an exponent");
 403   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x.0"), "Hex strings require an exponent");
 404
 405   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  "0x0.0"), "Hex strings require an exponent");
 406   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x0.0"), "Hex strings require an exponent");
 407   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x0.0"), "Hex strings require an exponent");
 408
 409   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, StringRef("0x\0", 3)), "Invalid character in significand");
 410   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, StringRef("0x1\0", 4)), "Invalid character in significand");
 411   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, StringRef("0x1\02", 5)), "Invalid character in significand");
 412   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, StringRef("0x1\02p1", 7)), "Invalid character in significand");
 413   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, StringRef("0x1p\0", 5)), "Invalid character in exponent");
 414   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, StringRef("0x1p1\0", 6)), "Invalid character in exponent");
 415   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, StringRef("0x1p1\02", 7)), "Invalid character in exponent");
 416
 417   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "0x1p0f"), "Invalid character in exponent");
 418
 419   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "0x..p1"), "String contains multiple dots");
 420   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "0x..0p1"), "String contains multiple dots");
 421   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "0x1.0.0p1"), "String contains multiple dots");
 422 }
 423
 424 TEST(APFloatTest, StringHexadecimalSignificandDeath) {
 425   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  "0x."), "Significand has no digits");
 426   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x."), "Significand has no digits");
 427   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x."), "Significand has no digits");
 428
 429   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  "0xp"), "Significand has no digits");
 430   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0xp"), "Significand has no digits");
 431   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0xp"), "Significand has no digits");
 432
 433   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  "0xp+"), "Significand has no digits");
 434   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0xp+"), "Significand has no digits");
 435   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0xp+"), "Significand has no digits");
 436
 437   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  "0xp-"), "Significand has no digits");
 438   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0xp-"), "Significand has no digits");
 439   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0xp-"), "Significand has no digits");
 440
 441
 442   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  "0x.p"), "Significand has no digits");
 443   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x.p"), "Significand has no digits");
 444   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x.p"), "Significand has no digits");
 445
 446   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  "0x.p+"), "Significand has no digits");
 447   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x.p+"), "Significand has no digits");
 448   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x.p+"), "Significand has no digits");
 449
 450   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  "0x.p-"), "Significand has no digits");
 451   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x.p-"), "Significand has no digits");
 452   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x.p-"), "Significand has no digits");
 453 }
 454
 455 TEST(APFloatTest, StringHexadecimalExponentDeath) {
 456   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  "0x1p"), "Exponent has no digits");
 457   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x1p"), "Exponent has no digits");
 458   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x1p"), "Exponent has no digits");
 459
 460   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  "0x1p+"), "Exponent has no digits");
 461   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x1p+"), "Exponent has no digits");
 462   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x1p+"), "Exponent has no digits");
 463
 464   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  "0x1p-"), "Exponent has no digits");
 465   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x1p-"), "Exponent has no digits");
 466   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x1p-"), "Exponent has no digits");
 467
 468
 469   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  "0x1.p"), "Exponent has no digits");
 470   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x1.p"), "Exponent has no digits");
 471   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x1.p"), "Exponent has no digits");
 472
 473   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  "0x1.p+"), "Exponent has no digits");
 474   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x1.p+"), "Exponent has no digits");
 475   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x1.p+"), "Exponent has no digits");
 476
 477   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  "0x1.p-"), "Exponent has no digits");
 478   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x1.p-"), "Exponent has no digits");
 479   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x1.p-"), "Exponent has no digits");
 480
 481
 482   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  "0x.1p"), "Exponent has no digits");
 483   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x.1p"), "Exponent has no digits");
 484   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x.1p"), "Exponent has no digits");
 485
 486   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  "0x.1p+"), "Exponent has no digits");
 487   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x.1p+"), "Exponent has no digits");
 488   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x.1p+"), "Exponent has no digits");
 489
 490   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  "0x.1p-"), "Exponent has no digits");
 491   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x.1p-"), "Exponent has no digits");
 492   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x.1p-"), "Exponent has no digits");
 493
 494
 495   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  "0x1.1p"), "Exponent has no digits");
 496   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x1.1p"), "Exponent has no digits");
 497   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x1.1p"), "Exponent has no digits");
 498
 499   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  "0x1.1p+"), "Exponent has no digits");
 500   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x1.1p+"), "Exponent has no digits");
 501   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x1.1p+"), "Exponent has no digits");
 502
 503   EXPECT_DEATH(APFloat(APFloat::IEEEdouble,  "0x1.1p-"), "Exponent has no digits");
 504   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x1.1p-"), "Exponent has no digits");
 505   EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x1.1p-"), "Exponent has no digits");
 506 }
 507 #endif
 508
 509 }