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 <string> 12 #include "llvm/Support/raw_ostream.h" 13 #include "gtest/gtest.h" 14 #include "llvm/ADT/APFloat.h" 15 #include "llvm/ADT/APSInt.h" 16 #include "llvm/ADT/SmallString.h" 17 #include "llvm/ADT/SmallVector.h" 18 19 using namespace llvm; 20 21 static double convertToDoubleFromString(const char *Str) { 22 llvm::APFloat F(0.0); 23 F.convertFromString(Str, llvm::APFloat::rmNearestTiesToEven); 24 return F.convertToDouble(); 25 } 26 27 static std::string convertToString(double d, unsigned Prec, unsigned Pad) { 28 llvm::SmallVector<char, 100> Buffer; 29 llvm::APFloat F(d); 30 F.toString(Buffer, Prec, Pad); 31 return std::string(Buffer.data(), Buffer.size()); 32 } 33 34 namespace { 35 36 TEST(APFloatTest, Zero) { 37 EXPECT_EQ(0.0f, APFloat(APFloat::IEEEsingle, 0.0f).convertToFloat()); 38 EXPECT_EQ(-0.0f, APFloat(APFloat::IEEEsingle, -0.0f).convertToFloat()); 39 40 EXPECT_EQ(0.0, APFloat(APFloat::IEEEdouble, 0.0).convertToDouble()); 41 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, -0.0).convertToDouble()); 42 } 43 44 TEST(APFloatTest, fromZeroDecimalString) { 45 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0").convertToDouble()); 46 EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0").convertToDouble()); 47 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0").convertToDouble()); 48 49 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0.").convertToDouble()); 50 EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0.").convertToDouble()); 51 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0.").convertToDouble()); 52 53 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, ".0").convertToDouble()); 54 EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+.0").convertToDouble()); 55 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-.0").convertToDouble()); 56 57 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0.0").convertToDouble()); 58 EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0.0").convertToDouble()); 59 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0.0").convertToDouble()); 60 61 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "00000.").convertToDouble()); 62 EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+00000.").convertToDouble()); 63 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-00000.").convertToDouble()); 64 65 EXPECT_EQ(0.0, APFloat(APFloat::IEEEdouble, ".00000").convertToDouble()); 66 EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+.00000").convertToDouble()); 67 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-.00000").convertToDouble()); 68 69 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0000.00000").convertToDouble()); 70 EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0000.00000").convertToDouble()); 71 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0000.00000").convertToDouble()); 72 } 73 74 TEST(APFloatTest, fromZeroDecimalSingleExponentString) { 75 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0e1").convertToDouble()); 76 EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0e1").convertToDouble()); 77 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0e1").convertToDouble()); 78 79 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0e+1").convertToDouble()); 80 EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0e+1").convertToDouble()); 81 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0e+1").convertToDouble()); 82 83 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0e-1").convertToDouble()); 84 EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0e-1").convertToDouble()); 85 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0e-1").convertToDouble()); 86 87 88 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0.e1").convertToDouble()); 89 EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0.e1").convertToDouble()); 90 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0.e1").convertToDouble()); 91 92 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0.e+1").convertToDouble()); 93 EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0.e+1").convertToDouble()); 94 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0.e+1").convertToDouble()); 95 96 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0.e-1").convertToDouble()); 97 EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0.e-1").convertToDouble()); 98 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0.e-1").convertToDouble()); 99 100 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, ".0e1").convertToDouble()); 101 EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+.0e1").convertToDouble()); 102 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-.0e1").convertToDouble()); 103 104 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, ".0e+1").convertToDouble()); 105 EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+.0e+1").convertToDouble()); 106 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-.0e+1").convertToDouble()); 107 108 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, ".0e-1").convertToDouble()); 109 EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+.0e-1").convertToDouble()); 110 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-.0e-1").convertToDouble()); 111 112 113 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0.0e1").convertToDouble()); 114 EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0.0e1").convertToDouble()); 115 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0.0e1").convertToDouble()); 116 117 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0.0e+1").convertToDouble()); 118 EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0.0e+1").convertToDouble()); 119 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0.0e+1").convertToDouble()); 120 121 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0.0e-1").convertToDouble()); 122 EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0.0e-1").convertToDouble()); 123 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0.0e-1").convertToDouble()); 124 125 126 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "000.0000e1").convertToDouble()); 127 EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+000.0000e+1").convertToDouble()); 128 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-000.0000e+1").convertToDouble()); 129 } 130 131 TEST(APFloatTest, fromZeroDecimalLargeExponentString) { 132 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0e1234").convertToDouble()); 133 EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0e1234").convertToDouble()); 134 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0e1234").convertToDouble()); 135 136 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0e+1234").convertToDouble()); 137 EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0e+1234").convertToDouble()); 138 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0e+1234").convertToDouble()); 139 140 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0e-1234").convertToDouble()); 141 EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0e-1234").convertToDouble()); 142 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0e-1234").convertToDouble()); 143 144 EXPECT_EQ(0.0, APFloat(APFloat::IEEEdouble, "000.0000e1234").convertToDouble()); 145 EXPECT_EQ(0.0, APFloat(APFloat::IEEEdouble, "000.0000e-1234").convertToDouble()); 146 147 EXPECT_EQ(0.0, APFloat(APFloat::IEEEdouble, StringRef("0e1234\02", 6)).convertToDouble()); 148 } 149 150 TEST(APFloatTest, fromZeroHexadecimalString) { 151 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0x0p1").convertToDouble()); 152 EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0x0p1").convertToDouble()); 153 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0x0p1").convertToDouble()); 154 155 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0x0p+1").convertToDouble()); 156 EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0x0p+1").convertToDouble()); 157 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0x0p+1").convertToDouble()); 158 159 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0x0p-1").convertToDouble()); 160 EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0x0p-1").convertToDouble()); 161 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0x0p-1").convertToDouble()); 162 163 164 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0x0.p1").convertToDouble()); 165 EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0x0.p1").convertToDouble()); 166 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0x0.p1").convertToDouble()); 167 168 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0x0.p+1").convertToDouble()); 169 EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0x0.p+1").convertToDouble()); 170 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0x0.p+1").convertToDouble()); 171 172 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0x0.p-1").convertToDouble()); 173 EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0x0.p-1").convertToDouble()); 174 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0x0.p-1").convertToDouble()); 175 176 177 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0x.0p1").convertToDouble()); 178 EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0x.0p1").convertToDouble()); 179 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0x.0p1").convertToDouble()); 180 181 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0x.0p+1").convertToDouble()); 182 EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0x.0p+1").convertToDouble()); 183 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0x.0p+1").convertToDouble()); 184 185 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0x.0p-1").convertToDouble()); 186 EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0x.0p-1").convertToDouble()); 187 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0x.0p-1").convertToDouble()); 188 189 190 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0x0.0p1").convertToDouble()); 191 EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0x0.0p1").convertToDouble()); 192 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0x0.0p1").convertToDouble()); 193 194 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0x0.0p+1").convertToDouble()); 195 EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0x0.0p+1").convertToDouble()); 196 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0x0.0p+1").convertToDouble()); 197 198 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0x0.0p-1").convertToDouble()); 199 EXPECT_EQ(+0.0, APFloat(APFloat::IEEEdouble, "+0x0.0p-1").convertToDouble()); 200 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0x0.0p-1").convertToDouble()); 201 202 203 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0x00000.p1").convertToDouble()); 204 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0x0000.00000p1").convertToDouble()); 205 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0x.00000p1").convertToDouble()); 206 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0x0.p1").convertToDouble()); 207 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0x0p1234").convertToDouble()); 208 EXPECT_EQ(-0.0, APFloat(APFloat::IEEEdouble, "-0x0p1234").convertToDouble()); 209 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0x00000.p1234").convertToDouble()); 210 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0x0000.00000p1234").convertToDouble()); 211 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0x.00000p1234").convertToDouble()); 212 EXPECT_EQ( 0.0, APFloat(APFloat::IEEEdouble, "0x0.p1234").convertToDouble()); 213 } 214 215 TEST(APFloatTest, fromDecimalString) { 216 EXPECT_EQ(1.0, APFloat(APFloat::IEEEdouble, "1").convertToDouble()); 217 EXPECT_EQ(2.0, APFloat(APFloat::IEEEdouble, "2.").convertToDouble()); 218 EXPECT_EQ(0.5, APFloat(APFloat::IEEEdouble, ".5").convertToDouble()); 219 EXPECT_EQ(1.0, APFloat(APFloat::IEEEdouble, "1.0").convertToDouble()); 220 EXPECT_EQ(-2.0, APFloat(APFloat::IEEEdouble, "-2").convertToDouble()); 221 EXPECT_EQ(-4.0, APFloat(APFloat::IEEEdouble, "-4.").convertToDouble()); 222 EXPECT_EQ(-0.5, APFloat(APFloat::IEEEdouble, "-.5").convertToDouble()); 223 EXPECT_EQ(-1.5, APFloat(APFloat::IEEEdouble, "-1.5").convertToDouble()); 224 EXPECT_EQ(1.25e12, APFloat(APFloat::IEEEdouble, "1.25e12").convertToDouble()); 225 EXPECT_EQ(1.25e+12, APFloat(APFloat::IEEEdouble, "1.25e+12").convertToDouble()); 226 EXPECT_EQ(1.25e-12, APFloat(APFloat::IEEEdouble, "1.25e-12").convertToDouble()); 227 EXPECT_EQ(1024.0, APFloat(APFloat::IEEEdouble, "1024.").convertToDouble()); 228 EXPECT_EQ(1024.05, APFloat(APFloat::IEEEdouble, "1024.05000").convertToDouble()); 229 EXPECT_EQ(0.05, APFloat(APFloat::IEEEdouble, ".05000").convertToDouble()); 230 EXPECT_EQ(2.0, APFloat(APFloat::IEEEdouble, "2.").convertToDouble()); 231 EXPECT_EQ(2.0e2, APFloat(APFloat::IEEEdouble, "2.e2").convertToDouble()); 232 EXPECT_EQ(2.0e+2, APFloat(APFloat::IEEEdouble, "2.e+2").convertToDouble()); 233 EXPECT_EQ(2.0e-2, APFloat(APFloat::IEEEdouble, "2.e-2").convertToDouble()); 234 EXPECT_EQ(2.05e2, APFloat(APFloat::IEEEdouble, "002.05000e2").convertToDouble()); 235 EXPECT_EQ(2.05e+2, APFloat(APFloat::IEEEdouble, "002.05000e+2").convertToDouble()); 236 EXPECT_EQ(2.05e-2, APFloat(APFloat::IEEEdouble, "002.05000e-2").convertToDouble()); 237 EXPECT_EQ(2.05e12, APFloat(APFloat::IEEEdouble, "002.05000e12").convertToDouble()); 238 EXPECT_EQ(2.05e+12, APFloat(APFloat::IEEEdouble, "002.05000e+12").convertToDouble()); 239 EXPECT_EQ(2.05e-12, APFloat(APFloat::IEEEdouble, "002.05000e-12").convertToDouble()); 240 241 // These are "carefully selected" to overflow the fast log-base 242 // calculations in APFloat.cpp 243 EXPECT_TRUE(APFloat(APFloat::IEEEdouble, "99e99999").isInfinity()); 244 EXPECT_TRUE(APFloat(APFloat::IEEEdouble, "-99e99999").isInfinity()); 245 EXPECT_TRUE(APFloat(APFloat::IEEEdouble, "1e-99999").isPosZero()); 246 EXPECT_TRUE(APFloat(APFloat::IEEEdouble, "-1e-99999").isNegZero()); 247 } 248 249 TEST(APFloatTest, fromHexadecimalString) { 250 EXPECT_EQ( 1.0, APFloat(APFloat::IEEEdouble, "0x1p0").convertToDouble()); 251 EXPECT_EQ(+1.0, APFloat(APFloat::IEEEdouble, "+0x1p0").convertToDouble()); 252 EXPECT_EQ(-1.0, APFloat(APFloat::IEEEdouble, "-0x1p0").convertToDouble()); 253 254 EXPECT_EQ( 1.0, APFloat(APFloat::IEEEdouble, "0x1p+0").convertToDouble()); 255 EXPECT_EQ(+1.0, APFloat(APFloat::IEEEdouble, "+0x1p+0").convertToDouble()); 256 EXPECT_EQ(-1.0, APFloat(APFloat::IEEEdouble, "-0x1p+0").convertToDouble()); 257 258 EXPECT_EQ( 1.0, APFloat(APFloat::IEEEdouble, "0x1p-0").convertToDouble()); 259 EXPECT_EQ(+1.0, APFloat(APFloat::IEEEdouble, "+0x1p-0").convertToDouble()); 260 EXPECT_EQ(-1.0, APFloat(APFloat::IEEEdouble, "-0x1p-0").convertToDouble()); 261 262 263 EXPECT_EQ( 2.0, APFloat(APFloat::IEEEdouble, "0x1p1").convertToDouble()); 264 EXPECT_EQ(+2.0, APFloat(APFloat::IEEEdouble, "+0x1p1").convertToDouble()); 265 EXPECT_EQ(-2.0, APFloat(APFloat::IEEEdouble, "-0x1p1").convertToDouble()); 266 267 EXPECT_EQ( 2.0, APFloat(APFloat::IEEEdouble, "0x1p+1").convertToDouble()); 268 EXPECT_EQ(+2.0, APFloat(APFloat::IEEEdouble, "+0x1p+1").convertToDouble()); 269 EXPECT_EQ(-2.0, APFloat(APFloat::IEEEdouble, "-0x1p+1").convertToDouble()); 270 271 EXPECT_EQ( 0.5, APFloat(APFloat::IEEEdouble, "0x1p-1").convertToDouble()); 272 EXPECT_EQ(+0.5, APFloat(APFloat::IEEEdouble, "+0x1p-1").convertToDouble()); 273 EXPECT_EQ(-0.5, APFloat(APFloat::IEEEdouble, "-0x1p-1").convertToDouble()); 274 275 276 EXPECT_EQ( 3.0, APFloat(APFloat::IEEEdouble, "0x1.8p1").convertToDouble()); 277 EXPECT_EQ(+3.0, APFloat(APFloat::IEEEdouble, "+0x1.8p1").convertToDouble()); 278 EXPECT_EQ(-3.0, APFloat(APFloat::IEEEdouble, "-0x1.8p1").convertToDouble()); 279 280 EXPECT_EQ( 3.0, APFloat(APFloat::IEEEdouble, "0x1.8p+1").convertToDouble()); 281 EXPECT_EQ(+3.0, APFloat(APFloat::IEEEdouble, "+0x1.8p+1").convertToDouble()); 282 EXPECT_EQ(-3.0, APFloat(APFloat::IEEEdouble, "-0x1.8p+1").convertToDouble()); 283 284 EXPECT_EQ( 0.75, APFloat(APFloat::IEEEdouble, "0x1.8p-1").convertToDouble()); 285 EXPECT_EQ(+0.75, APFloat(APFloat::IEEEdouble, "+0x1.8p-1").convertToDouble()); 286 EXPECT_EQ(-0.75, APFloat(APFloat::IEEEdouble, "-0x1.8p-1").convertToDouble()); 287 288 289 EXPECT_EQ( 8192.0, APFloat(APFloat::IEEEdouble, "0x1000.000p1").convertToDouble()); 290 EXPECT_EQ(+8192.0, APFloat(APFloat::IEEEdouble, "+0x1000.000p1").convertToDouble()); 291 EXPECT_EQ(-8192.0, APFloat(APFloat::IEEEdouble, "-0x1000.000p1").convertToDouble()); 292 293 EXPECT_EQ( 8192.0, APFloat(APFloat::IEEEdouble, "0x1000.000p+1").convertToDouble()); 294 EXPECT_EQ(+8192.0, APFloat(APFloat::IEEEdouble, "+0x1000.000p+1").convertToDouble()); 295 EXPECT_EQ(-8192.0, APFloat(APFloat::IEEEdouble, "-0x1000.000p+1").convertToDouble()); 296 297 EXPECT_EQ( 2048.0, APFloat(APFloat::IEEEdouble, "0x1000.000p-1").convertToDouble()); 298 EXPECT_EQ(+2048.0, APFloat(APFloat::IEEEdouble, "+0x1000.000p-1").convertToDouble()); 299 EXPECT_EQ(-2048.0, APFloat(APFloat::IEEEdouble, "-0x1000.000p-1").convertToDouble()); 300 301 302 EXPECT_EQ( 8192.0, APFloat(APFloat::IEEEdouble, "0x1000p1").convertToDouble()); 303 EXPECT_EQ(+8192.0, APFloat(APFloat::IEEEdouble, "+0x1000p1").convertToDouble()); 304 EXPECT_EQ(-8192.0, APFloat(APFloat::IEEEdouble, "-0x1000p1").convertToDouble()); 305 306 EXPECT_EQ( 8192.0, APFloat(APFloat::IEEEdouble, "0x1000p+1").convertToDouble()); 307 EXPECT_EQ(+8192.0, APFloat(APFloat::IEEEdouble, "+0x1000p+1").convertToDouble()); 308 EXPECT_EQ(-8192.0, APFloat(APFloat::IEEEdouble, "-0x1000p+1").convertToDouble()); 309 310 EXPECT_EQ( 2048.0, APFloat(APFloat::IEEEdouble, "0x1000p-1").convertToDouble()); 311 EXPECT_EQ(+2048.0, APFloat(APFloat::IEEEdouble, "+0x1000p-1").convertToDouble()); 312 EXPECT_EQ(-2048.0, APFloat(APFloat::IEEEdouble, "-0x1000p-1").convertToDouble()); 313 314 315 EXPECT_EQ( 16384.0, APFloat(APFloat::IEEEdouble, "0x10p10").convertToDouble()); 316 EXPECT_EQ(+16384.0, APFloat(APFloat::IEEEdouble, "+0x10p10").convertToDouble()); 317 EXPECT_EQ(-16384.0, APFloat(APFloat::IEEEdouble, "-0x10p10").convertToDouble()); 318 319 EXPECT_EQ( 16384.0, APFloat(APFloat::IEEEdouble, "0x10p+10").convertToDouble()); 320 EXPECT_EQ(+16384.0, APFloat(APFloat::IEEEdouble, "+0x10p+10").convertToDouble()); 321 EXPECT_EQ(-16384.0, APFloat(APFloat::IEEEdouble, "-0x10p+10").convertToDouble()); 322 323 EXPECT_EQ( 0.015625, APFloat(APFloat::IEEEdouble, "0x10p-10").convertToDouble()); 324 EXPECT_EQ(+0.015625, APFloat(APFloat::IEEEdouble, "+0x10p-10").convertToDouble()); 325 EXPECT_EQ(-0.015625, APFloat(APFloat::IEEEdouble, "-0x10p-10").convertToDouble()); 326 327 EXPECT_EQ(1.0625, APFloat(APFloat::IEEEdouble, "0x1.1p0").convertToDouble()); 328 EXPECT_EQ(1.0, APFloat(APFloat::IEEEdouble, "0x1p0").convertToDouble()); 329 330 EXPECT_EQ(2.71828, convertToDoubleFromString("2.71828")); 331 } 332 333 TEST(APFloatTest, toString) { 334 ASSERT_EQ("10", convertToString(10.0, 6, 3)); 335 ASSERT_EQ("1.0E+1", convertToString(10.0, 6, 0)); 336 ASSERT_EQ("10100", convertToString(1.01E+4, 5, 2)); 337 ASSERT_EQ("1.01E+4", convertToString(1.01E+4, 4, 2)); 338 ASSERT_EQ("1.01E+4", convertToString(1.01E+4, 5, 1)); 339 ASSERT_EQ("0.0101", convertToString(1.01E-2, 5, 2)); 340 ASSERT_EQ("0.0101", convertToString(1.01E-2, 4, 2)); 341 ASSERT_EQ("1.01E-2", convertToString(1.01E-2, 5, 1)); 342 ASSERT_EQ("0.7853981633974483", convertToString(0.78539816339744830961, 0, 3)); 343 ASSERT_EQ("4.940656458412465E-324", convertToString(4.9406564584124654e-324, 0, 3)); 344 ASSERT_EQ("873.1834", convertToString(873.1834, 0, 1)); 345 ASSERT_EQ("8.731834E+2", convertToString(873.1834, 0, 0)); 346 } 347 348 TEST(APFloatTest, toInteger) { 349 bool isExact = false; 350 APSInt result(5, /*isUnsigned=*/true); 351 352 EXPECT_EQ(APFloat::opOK, 353 APFloat(APFloat::IEEEdouble, "10") 354 .convertToInteger(result, APFloat::rmTowardZero, &isExact)); 355 EXPECT_TRUE(isExact); 356 EXPECT_EQ(APSInt(APInt(5, 10), true), result); 357 358 EXPECT_EQ(APFloat::opInvalidOp, 359 APFloat(APFloat::IEEEdouble, "-10") 360 .convertToInteger(result, APFloat::rmTowardZero, &isExact)); 361 EXPECT_FALSE(isExact); 362 EXPECT_EQ(APSInt::getMinValue(5, true), result); 363 364 EXPECT_EQ(APFloat::opInvalidOp, 365 APFloat(APFloat::IEEEdouble, "32") 366 .convertToInteger(result, APFloat::rmTowardZero, &isExact)); 367 EXPECT_FALSE(isExact); 368 EXPECT_EQ(APSInt::getMaxValue(5, true), result); 369 370 EXPECT_EQ(APFloat::opInexact, 371 APFloat(APFloat::IEEEdouble, "7.9") 372 .convertToInteger(result, APFloat::rmTowardZero, &isExact)); 373 EXPECT_FALSE(isExact); 374 EXPECT_EQ(APSInt(APInt(5, 7), true), result); 375 376 result.setIsUnsigned(false); 377 EXPECT_EQ(APFloat::opOK, 378 APFloat(APFloat::IEEEdouble, "-10") 379 .convertToInteger(result, APFloat::rmTowardZero, &isExact)); 380 EXPECT_TRUE(isExact); 381 EXPECT_EQ(APSInt(APInt(5, -10, true), false), result); 382 383 EXPECT_EQ(APFloat::opInvalidOp, 384 APFloat(APFloat::IEEEdouble, "-17") 385 .convertToInteger(result, APFloat::rmTowardZero, &isExact)); 386 EXPECT_FALSE(isExact); 387 EXPECT_EQ(APSInt::getMinValue(5, false), result); 388 389 EXPECT_EQ(APFloat::opInvalidOp, 390 APFloat(APFloat::IEEEdouble, "16") 391 .convertToInteger(result, APFloat::rmTowardZero, &isExact)); 392 EXPECT_FALSE(isExact); 393 EXPECT_EQ(APSInt::getMaxValue(5, false), result); 394 } 395 396 static APInt nanbits(const fltSemantics &Sem, 397 bool SNaN, bool Negative, uint64_t fill) { 398 APInt apfill(64, fill); 399 if (SNaN) 400 return APFloat::getSNaN(Sem, Negative, &apfill).bitcastToAPInt(); 401 else 402 return APFloat::getQNaN(Sem, Negative, &apfill).bitcastToAPInt(); 403 } 404 405 TEST(APFloatTest, makeNaN) { 406 ASSERT_EQ(0x7fc00000, nanbits(APFloat::IEEEsingle, false, false, 0)); 407 ASSERT_EQ(0xffc00000, nanbits(APFloat::IEEEsingle, false, true, 0)); 408 ASSERT_EQ(0x7fc0ae72, nanbits(APFloat::IEEEsingle, false, false, 0xae72)); 409 ASSERT_EQ(0x7fffae72, nanbits(APFloat::IEEEsingle, false, false, 0xffffae72)); 410 ASSERT_EQ(0x7fa00000, nanbits(APFloat::IEEEsingle, true, false, 0)); 411 ASSERT_EQ(0xffa00000, nanbits(APFloat::IEEEsingle, true, true, 0)); 412 ASSERT_EQ(0x7f80ae72, nanbits(APFloat::IEEEsingle, true, false, 0xae72)); 413 ASSERT_EQ(0x7fbfae72, nanbits(APFloat::IEEEsingle, true, false, 0xffffae72)); 414 415 ASSERT_EQ(0x7ff8000000000000ULL, nanbits(APFloat::IEEEdouble, false, false, 0)); 416 ASSERT_EQ(0xfff8000000000000ULL, nanbits(APFloat::IEEEdouble, false, true, 0)); 417 ASSERT_EQ(0x7ff800000000ae72ULL, nanbits(APFloat::IEEEdouble, false, false, 0xae72)); 418 ASSERT_EQ(0x7fffffffffffae72ULL, nanbits(APFloat::IEEEdouble, false, false, 0xffffffffffffae72ULL)); 419 ASSERT_EQ(0x7ff4000000000000ULL, nanbits(APFloat::IEEEdouble, true, false, 0)); 420 ASSERT_EQ(0xfff4000000000000ULL, nanbits(APFloat::IEEEdouble, true, true, 0)); 421 ASSERT_EQ(0x7ff000000000ae72ULL, nanbits(APFloat::IEEEdouble, true, false, 0xae72)); 422 ASSERT_EQ(0x7ff7ffffffffae72ULL, nanbits(APFloat::IEEEdouble, true, false, 0xffffffffffffae72ULL)); 423 } 424 425 #ifdef GTEST_HAS_DEATH_TEST 426 #ifndef NDEBUG 427 TEST(APFloatTest, SemanticsDeath) { 428 EXPECT_DEATH(APFloat(APFloat::IEEEsingle, 0.0f).convertToDouble(), "Float semantics are not IEEEdouble"); 429 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, 0.0 ).convertToFloat(), "Float semantics are not IEEEsingle"); 430 } 431 432 TEST(APFloatTest, StringDecimalDeath) { 433 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, ""), "Invalid string length"); 434 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+"), "String has no digits"); 435 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-"), "String has no digits"); 436 437 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, StringRef("\0", 1)), "Invalid character in significand"); 438 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, StringRef("1\0", 2)), "Invalid character in significand"); 439 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, StringRef("1\02", 3)), "Invalid character in significand"); 440 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, StringRef("1\02e1", 5)), "Invalid character in significand"); 441 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, StringRef("1e\0", 3)), "Invalid character in exponent"); 442 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, StringRef("1e1\0", 4)), "Invalid character in exponent"); 443 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, StringRef("1e1\02", 5)), "Invalid character in exponent"); 444 445 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "1.0f"), "Invalid character in significand"); 446 447 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, ".."), "String contains multiple dots"); 448 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "..0"), "String contains multiple dots"); 449 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "1.0.0"), "String contains multiple dots"); 450 } 451 452 TEST(APFloatTest, StringDecimalSignificandDeath) { 453 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "."), "Significand has no digits"); 454 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+."), "Significand has no digits"); 455 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-."), "Significand has no digits"); 456 457 458 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "e"), "Significand has no digits"); 459 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+e"), "Significand has no digits"); 460 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-e"), "Significand has no digits"); 461 462 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "e1"), "Significand has no digits"); 463 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+e1"), "Significand has no digits"); 464 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-e1"), "Significand has no digits"); 465 466 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, ".e1"), "Significand has no digits"); 467 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+.e1"), "Significand has no digits"); 468 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-.e1"), "Significand has no digits"); 469 470 471 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, ".e"), "Significand has no digits"); 472 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+.e"), "Significand has no digits"); 473 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-.e"), "Significand has no digits"); 474 } 475 476 TEST(APFloatTest, StringDecimalExponentDeath) { 477 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "1e"), "Exponent has no digits"); 478 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+1e"), "Exponent has no digits"); 479 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-1e"), "Exponent has no digits"); 480 481 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "1.e"), "Exponent has no digits"); 482 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+1.e"), "Exponent has no digits"); 483 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-1.e"), "Exponent has no digits"); 484 485 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, ".1e"), "Exponent has no digits"); 486 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+.1e"), "Exponent has no digits"); 487 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-.1e"), "Exponent has no digits"); 488 489 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "1.1e"), "Exponent has no digits"); 490 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+1.1e"), "Exponent has no digits"); 491 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-1.1e"), "Exponent has no digits"); 492 493 494 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "1e+"), "Exponent has no digits"); 495 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "1e-"), "Exponent has no digits"); 496 497 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, ".1e"), "Exponent has no digits"); 498 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, ".1e+"), "Exponent has no digits"); 499 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, ".1e-"), "Exponent has no digits"); 500 501 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "1.0e"), "Exponent has no digits"); 502 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "1.0e+"), "Exponent has no digits"); 503 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "1.0e-"), "Exponent has no digits"); 504 } 505 506 TEST(APFloatTest, StringHexadecimalDeath) { 507 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "0x"), "Invalid string"); 508 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x"), "Invalid string"); 509 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x"), "Invalid string"); 510 511 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "0x0"), "Hex strings require an exponent"); 512 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x0"), "Hex strings require an exponent"); 513 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x0"), "Hex strings require an exponent"); 514 515 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "0x0."), "Hex strings require an exponent"); 516 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x0."), "Hex strings require an exponent"); 517 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x0."), "Hex strings require an exponent"); 518 519 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "0x.0"), "Hex strings require an exponent"); 520 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x.0"), "Hex strings require an exponent"); 521 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x.0"), "Hex strings require an exponent"); 522 523 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "0x0.0"), "Hex strings require an exponent"); 524 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x0.0"), "Hex strings require an exponent"); 525 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x0.0"), "Hex strings require an exponent"); 526 527 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, StringRef("0x\0", 3)), "Invalid character in significand"); 528 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, StringRef("0x1\0", 4)), "Invalid character in significand"); 529 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, StringRef("0x1\02", 5)), "Invalid character in significand"); 530 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, StringRef("0x1\02p1", 7)), "Invalid character in significand"); 531 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, StringRef("0x1p\0", 5)), "Invalid character in exponent"); 532 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, StringRef("0x1p1\0", 6)), "Invalid character in exponent"); 533 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, StringRef("0x1p1\02", 7)), "Invalid character in exponent"); 534 535 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "0x1p0f"), "Invalid character in exponent"); 536 537 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "0x..p1"), "String contains multiple dots"); 538 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "0x..0p1"), "String contains multiple dots"); 539 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "0x1.0.0p1"), "String contains multiple dots"); 540 } 541 542 TEST(APFloatTest, StringHexadecimalSignificandDeath) { 543 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "0x."), "Significand has no digits"); 544 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x."), "Significand has no digits"); 545 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x."), "Significand has no digits"); 546 547 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "0xp"), "Significand has no digits"); 548 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0xp"), "Significand has no digits"); 549 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0xp"), "Significand has no digits"); 550 551 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "0xp+"), "Significand has no digits"); 552 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0xp+"), "Significand has no digits"); 553 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0xp+"), "Significand has no digits"); 554 555 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "0xp-"), "Significand has no digits"); 556 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0xp-"), "Significand has no digits"); 557 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0xp-"), "Significand has no digits"); 558 559 560 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "0x.p"), "Significand has no digits"); 561 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x.p"), "Significand has no digits"); 562 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x.p"), "Significand has no digits"); 563 564 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "0x.p+"), "Significand has no digits"); 565 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x.p+"), "Significand has no digits"); 566 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x.p+"), "Significand has no digits"); 567 568 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "0x.p-"), "Significand has no digits"); 569 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x.p-"), "Significand has no digits"); 570 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x.p-"), "Significand has no digits"); 571 } 572 573 TEST(APFloatTest, StringHexadecimalExponentDeath) { 574 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "0x1p"), "Exponent has no digits"); 575 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x1p"), "Exponent has no digits"); 576 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x1p"), "Exponent has no digits"); 577 578 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "0x1p+"), "Exponent has no digits"); 579 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x1p+"), "Exponent has no digits"); 580 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x1p+"), "Exponent has no digits"); 581 582 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "0x1p-"), "Exponent has no digits"); 583 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x1p-"), "Exponent has no digits"); 584 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x1p-"), "Exponent has no digits"); 585 586 587 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "0x1.p"), "Exponent has no digits"); 588 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x1.p"), "Exponent has no digits"); 589 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x1.p"), "Exponent has no digits"); 590 591 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "0x1.p+"), "Exponent has no digits"); 592 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x1.p+"), "Exponent has no digits"); 593 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x1.p+"), "Exponent has no digits"); 594 595 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "0x1.p-"), "Exponent has no digits"); 596 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x1.p-"), "Exponent has no digits"); 597 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x1.p-"), "Exponent has no digits"); 598 599 600 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "0x.1p"), "Exponent has no digits"); 601 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x.1p"), "Exponent has no digits"); 602 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x.1p"), "Exponent has no digits"); 603 604 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "0x.1p+"), "Exponent has no digits"); 605 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x.1p+"), "Exponent has no digits"); 606 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x.1p+"), "Exponent has no digits"); 607 608 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "0x.1p-"), "Exponent has no digits"); 609 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x.1p-"), "Exponent has no digits"); 610 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x.1p-"), "Exponent has no digits"); 611 612 613 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "0x1.1p"), "Exponent has no digits"); 614 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x1.1p"), "Exponent has no digits"); 615 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x1.1p"), "Exponent has no digits"); 616 617 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "0x1.1p+"), "Exponent has no digits"); 618 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x1.1p+"), "Exponent has no digits"); 619 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x1.1p+"), "Exponent has no digits"); 620 621 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "0x1.1p-"), "Exponent has no digits"); 622 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "+0x1.1p-"), "Exponent has no digits"); 623 EXPECT_DEATH(APFloat(APFloat::IEEEdouble, "-0x1.1p-"), "Exponent has no digits"); 624 } 625 #endif 626 #endif 627 628 TEST(APFloatTest, exactInverse) { 629 APFloat inv(0.0f); 630 631 // Trivial operation. 632 EXPECT_TRUE(APFloat(2.0).getExactInverse(&inv)); 633 EXPECT_TRUE(inv.bitwiseIsEqual(APFloat(0.5))); 634 EXPECT_TRUE(APFloat(2.0f).getExactInverse(&inv)); 635 EXPECT_TRUE(inv.bitwiseIsEqual(APFloat(0.5f))); 636 637 // FLT_MIN 638 EXPECT_TRUE(APFloat(1.17549435e-38f).getExactInverse(&inv)); 639 EXPECT_TRUE(inv.bitwiseIsEqual(APFloat(8.5070592e+37f))); 640 641 // Large float, inverse is a denormal. 642 EXPECT_FALSE(APFloat(1.7014118e38f).getExactInverse(0)); 643 // Zero 644 EXPECT_FALSE(APFloat(0.0).getExactInverse(0)); 645 // Denormalized float 646 EXPECT_FALSE(APFloat(1.40129846e-45f).getExactInverse(0)); 647 } 648 649 } 650
