1 //===- unittests/Support/MathExtrasTest.cpp - math utils 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 "gtest/gtest.h" 11 #include "llvm/Support/MathExtras.h" 12 13 using namespace llvm; 14 15 namespace { 16 17 TEST(MathExtras, countTrailingZeros) { 18 uint8_t Z8 = 0; 19 uint16_t Z16 = 0; 20 uint32_t Z32 = 0; 21 uint64_t Z64 = 0; 22 EXPECT_EQ(8u, countTrailingZeros(Z8)); 23 EXPECT_EQ(16u, countTrailingZeros(Z16)); 24 EXPECT_EQ(32u, countTrailingZeros(Z32)); 25 EXPECT_EQ(64u, countTrailingZeros(Z64)); 26 27 uint8_t NZ8 = 42; 28 uint16_t NZ16 = 42; 29 uint32_t NZ32 = 42; 30 uint64_t NZ64 = 42; 31 EXPECT_EQ(1u, countTrailingZeros(NZ8)); 32 EXPECT_EQ(1u, countTrailingZeros(NZ16)); 33 EXPECT_EQ(1u, countTrailingZeros(NZ32)); 34 EXPECT_EQ(1u, countTrailingZeros(NZ64)); 35 } 36 37 TEST(MathExtras, countLeadingZeros) { 38 uint8_t Z8 = 0; 39 uint16_t Z16 = 0; 40 uint32_t Z32 = 0; 41 uint64_t Z64 = 0; 42 EXPECT_EQ(8u, countLeadingZeros(Z8)); 43 EXPECT_EQ(16u, countLeadingZeros(Z16)); 44 EXPECT_EQ(32u, countLeadingZeros(Z32)); 45 EXPECT_EQ(64u, countLeadingZeros(Z64)); 46 47 uint8_t NZ8 = 42; 48 uint16_t NZ16 = 42; 49 uint32_t NZ32 = 42; 50 uint64_t NZ64 = 42; 51 EXPECT_EQ(2u, countLeadingZeros(NZ8)); 52 EXPECT_EQ(10u, countLeadingZeros(NZ16)); 53 EXPECT_EQ(26u, countLeadingZeros(NZ32)); 54 EXPECT_EQ(58u, countLeadingZeros(NZ64)); 55 56 EXPECT_EQ(8u, countLeadingZeros(0x00F000FFu)); 57 EXPECT_EQ(8u, countLeadingZeros(0x00F12345u)); 58 for (unsigned i = 0; i <= 30; ++i) { 59 EXPECT_EQ(31 - i, countLeadingZeros(1u << i)); 60 } 61 62 EXPECT_EQ(8u, countLeadingZeros(0x00F1234500F12345ULL)); 63 EXPECT_EQ(1u, countLeadingZeros(1ULL << 62)); 64 for (unsigned i = 0; i <= 62; ++i) { 65 EXPECT_EQ(63 - i, countLeadingZeros(1ULL << i)); 66 } 67 } 68 69 TEST(MathExtras, onesMask) { 70 EXPECT_EQ(0U, maskLeadingOnes<uint8_t>(0)); 71 EXPECT_EQ(0U, maskTrailingOnes<uint8_t>(0)); 72 EXPECT_EQ(0U, maskLeadingOnes<uint16_t>(0)); 73 EXPECT_EQ(0U, maskTrailingOnes<uint16_t>(0)); 74 EXPECT_EQ(0U, maskLeadingOnes<uint32_t>(0)); 75 EXPECT_EQ(0U, maskTrailingOnes<uint32_t>(0)); 76 EXPECT_EQ(0U, maskLeadingOnes<uint64_t>(0)); 77 EXPECT_EQ(0U, maskTrailingOnes<uint64_t>(0)); 78 79 EXPECT_EQ(0x00000003U, maskTrailingOnes<uint32_t>(2U)); 80 EXPECT_EQ(0xC0000000U, maskLeadingOnes<uint32_t>(2U)); 81 82 EXPECT_EQ(0x000007FFU, maskTrailingOnes<uint32_t>(11U)); 83 EXPECT_EQ(0xFFE00000U, maskLeadingOnes<uint32_t>(11U)); 84 85 EXPECT_EQ(0xFFFFFFFFU, maskTrailingOnes<uint32_t>(32U)); 86 EXPECT_EQ(0xFFFFFFFFU, maskLeadingOnes<uint32_t>(32U)); 87 } 88 89 TEST(MathExtras, findFirstSet) { 90 uint8_t Z8 = 0; 91 uint16_t Z16 = 0; 92 uint32_t Z32 = 0; 93 uint64_t Z64 = 0; 94 EXPECT_EQ(0xFFULL, findFirstSet(Z8)); 95 EXPECT_EQ(0xFFFFULL, findFirstSet(Z16)); 96 EXPECT_EQ(0xFFFFFFFFULL, findFirstSet(Z32)); 97 EXPECT_EQ(0xFFFFFFFFFFFFFFFFULL, findFirstSet(Z64)); 98 99 uint8_t NZ8 = 42; 100 uint16_t NZ16 = 42; 101 uint32_t NZ32 = 42; 102 uint64_t NZ64 = 42; 103 EXPECT_EQ(1u, findFirstSet(NZ8)); 104 EXPECT_EQ(1u, findFirstSet(NZ16)); 105 EXPECT_EQ(1u, findFirstSet(NZ32)); 106 EXPECT_EQ(1u, findFirstSet(NZ64)); 107 } 108 109 TEST(MathExtras, findLastSet) { 110 uint8_t Z8 = 0; 111 uint16_t Z16 = 0; 112 uint32_t Z32 = 0; 113 uint64_t Z64 = 0; 114 EXPECT_EQ(0xFFULL, findLastSet(Z8)); 115 EXPECT_EQ(0xFFFFULL, findLastSet(Z16)); 116 EXPECT_EQ(0xFFFFFFFFULL, findLastSet(Z32)); 117 EXPECT_EQ(0xFFFFFFFFFFFFFFFFULL, findLastSet(Z64)); 118 119 uint8_t NZ8 = 42; 120 uint16_t NZ16 = 42; 121 uint32_t NZ32 = 42; 122 uint64_t NZ64 = 42; 123 EXPECT_EQ(5u, findLastSet(NZ8)); 124 EXPECT_EQ(5u, findLastSet(NZ16)); 125 EXPECT_EQ(5u, findLastSet(NZ32)); 126 EXPECT_EQ(5u, findLastSet(NZ64)); 127 } 128 129 TEST(MathExtras, isIntN) { 130 EXPECT_TRUE(isIntN(16, 32767)); 131 EXPECT_FALSE(isIntN(16, 32768)); 132 } 133 134 TEST(MathExtras, isUIntN) { 135 EXPECT_TRUE(isUIntN(16, 65535)); 136 EXPECT_FALSE(isUIntN(16, 65536)); 137 EXPECT_TRUE(isUIntN(1, 0)); 138 EXPECT_TRUE(isUIntN(6, 63)); 139 } 140 141 TEST(MathExtras, maxIntN) { 142 EXPECT_EQ(32767, maxIntN(16)); 143 EXPECT_EQ(2147483647, maxIntN(32)); 144 EXPECT_EQ(std::numeric_limits<int32_t>::max(), maxIntN(32)); 145 EXPECT_EQ(std::numeric_limits<int64_t>::max(), maxIntN(64)); 146 } 147 148 TEST(MathExtras, minIntN) { 149 EXPECT_EQ(-32768LL, minIntN(16)); 150 EXPECT_EQ(-64LL, minIntN(7)); 151 EXPECT_EQ(std::numeric_limits<int32_t>::min(), minIntN(32)); 152 EXPECT_EQ(std::numeric_limits<int64_t>::min(), minIntN(64)); 153 } 154 155 TEST(MathExtras, maxUIntN) { 156 EXPECT_EQ(0xffffULL, maxUIntN(16)); 157 EXPECT_EQ(0xffffffffULL, maxUIntN(32)); 158 EXPECT_EQ(0xffffffffffffffffULL, maxUIntN(64)); 159 EXPECT_EQ(1ULL, maxUIntN(1)); 160 EXPECT_EQ(0x0fULL, maxUIntN(4)); 161 } 162 163 TEST(MathExtras, reverseBits) { 164 uint8_t NZ8 = 42; 165 uint16_t NZ16 = 42; 166 uint32_t NZ32 = 42; 167 uint64_t NZ64 = 42; 168 EXPECT_EQ(0x54ULL, reverseBits(NZ8)); 169 EXPECT_EQ(0x5400ULL, reverseBits(NZ16)); 170 EXPECT_EQ(0x54000000ULL, reverseBits(NZ32)); 171 EXPECT_EQ(0x5400000000000000ULL, reverseBits(NZ64)); 172 } 173 174 TEST(MathExtras, isPowerOf2_32) { 175 EXPECT_TRUE(isPowerOf2_32(1 << 6)); 176 EXPECT_TRUE(isPowerOf2_32(1 << 12)); 177 EXPECT_FALSE(isPowerOf2_32((1 << 19) + 3)); 178 EXPECT_FALSE(isPowerOf2_32(0xABCDEF0)); 179 } 180 181 TEST(MathExtras, isPowerOf2_64) { 182 EXPECT_TRUE(isPowerOf2_64(1LL << 46)); 183 EXPECT_TRUE(isPowerOf2_64(1LL << 12)); 184 EXPECT_FALSE(isPowerOf2_64((1LL << 53) + 3)); 185 EXPECT_FALSE(isPowerOf2_64(0xABCDEF0ABCDEF0LL)); 186 } 187 188 TEST(MathExtras, PowerOf2Ceil) { 189 EXPECT_EQ(0U, PowerOf2Ceil(0U)); 190 EXPECT_EQ(8U, PowerOf2Ceil(8U)); 191 EXPECT_EQ(8U, PowerOf2Ceil(7U)); 192 } 193 194 TEST(MathExtras, PowerOf2Floor) { 195 EXPECT_EQ(0U, PowerOf2Floor(0U)); 196 EXPECT_EQ(8U, PowerOf2Floor(8U)); 197 EXPECT_EQ(4U, PowerOf2Floor(7U)); 198 } 199 200 TEST(MathExtras, ByteSwap_32) { 201 EXPECT_EQ(0x44332211u, ByteSwap_32(0x11223344)); 202 EXPECT_EQ(0xDDCCBBAAu, ByteSwap_32(0xAABBCCDD)); 203 } 204 205 TEST(MathExtras, ByteSwap_64) { 206 EXPECT_EQ(0x8877665544332211ULL, ByteSwap_64(0x1122334455667788LL)); 207 EXPECT_EQ(0x1100FFEEDDCCBBAAULL, ByteSwap_64(0xAABBCCDDEEFF0011LL)); 208 } 209 210 TEST(MathExtras, countLeadingOnes) { 211 for (int i = 30; i >= 0; --i) { 212 // Start with all ones and unset some bit. 213 EXPECT_EQ(31u - i, countLeadingOnes(0xFFFFFFFF ^ (1 << i))); 214 } 215 for (int i = 62; i >= 0; --i) { 216 // Start with all ones and unset some bit. 217 EXPECT_EQ(63u - i, countLeadingOnes(0xFFFFFFFFFFFFFFFFULL ^ (1LL << i))); 218 } 219 for (int i = 30; i >= 0; --i) { 220 // Start with all ones and unset some bit. 221 EXPECT_EQ(31u - i, countLeadingOnes(0xFFFFFFFF ^ (1 << i))); 222 } 223 } 224 225 TEST(MathExtras, FloatBits) { 226 static const float kValue = 5632.34f; 227 EXPECT_FLOAT_EQ(kValue, BitsToFloat(FloatToBits(kValue))); 228 } 229 230 TEST(MathExtras, DoubleBits) { 231 static const double kValue = 87987234.983498; 232 EXPECT_DOUBLE_EQ(kValue, BitsToDouble(DoubleToBits(kValue))); 233 } 234 235 TEST(MathExtras, MinAlign) { 236 EXPECT_EQ(1u, MinAlign(2, 3)); 237 EXPECT_EQ(2u, MinAlign(2, 4)); 238 EXPECT_EQ(1u, MinAlign(17, 64)); 239 EXPECT_EQ(256u, MinAlign(256, 512)); 240 } 241 242 TEST(MathExtras, NextPowerOf2) { 243 EXPECT_EQ(4u, NextPowerOf2(3)); 244 EXPECT_EQ(16u, NextPowerOf2(15)); 245 EXPECT_EQ(256u, NextPowerOf2(128)); 246 } 247 248 TEST(MathExtras, alignTo) { 249 EXPECT_EQ(8u, alignTo(5, 8)); 250 EXPECT_EQ(24u, alignTo(17, 8)); 251 EXPECT_EQ(0u, alignTo(~0LL, 8)); 252 253 EXPECT_EQ(7u, alignTo(5, 8, 7)); 254 EXPECT_EQ(17u, alignTo(17, 8, 1)); 255 EXPECT_EQ(3u, alignTo(~0LL, 8, 3)); 256 EXPECT_EQ(552u, alignTo(321, 255, 42)); 257 } 258 259 template<typename T> 260 void SaturatingAddTestHelper() 261 { 262 const T Max = std::numeric_limits<T>::max(); 263 bool ResultOverflowed; 264 265 EXPECT_EQ(T(3), SaturatingAdd(T(1), T(2))); 266 EXPECT_EQ(T(3), SaturatingAdd(T(1), T(2), &ResultOverflowed)); 267 EXPECT_FALSE(ResultOverflowed); 268 269 EXPECT_EQ(Max, SaturatingAdd(Max, T(1))); 270 EXPECT_EQ(Max, SaturatingAdd(Max, T(1), &ResultOverflowed)); 271 EXPECT_TRUE(ResultOverflowed); 272 273 EXPECT_EQ(Max, SaturatingAdd(T(1), T(Max - 1))); 274 EXPECT_EQ(Max, SaturatingAdd(T(1), T(Max - 1), &ResultOverflowed)); 275 EXPECT_FALSE(ResultOverflowed); 276 277 EXPECT_EQ(Max, SaturatingAdd(T(1), Max)); 278 EXPECT_EQ(Max, SaturatingAdd(T(1), Max, &ResultOverflowed)); 279 EXPECT_TRUE(ResultOverflowed); 280 281 EXPECT_EQ(Max, SaturatingAdd(Max, Max)); 282 EXPECT_EQ(Max, SaturatingAdd(Max, Max, &ResultOverflowed)); 283 EXPECT_TRUE(ResultOverflowed); 284 } 285 286 TEST(MathExtras, SaturatingAdd) { 287 SaturatingAddTestHelper<uint8_t>(); 288 SaturatingAddTestHelper<uint16_t>(); 289 SaturatingAddTestHelper<uint32_t>(); 290 SaturatingAddTestHelper<uint64_t>(); 291 } 292 293 template<typename T> 294 void SaturatingMultiplyTestHelper() 295 { 296 const T Max = std::numeric_limits<T>::max(); 297 bool ResultOverflowed; 298 299 // Test basic multiplication. 300 EXPECT_EQ(T(6), SaturatingMultiply(T(2), T(3))); 301 EXPECT_EQ(T(6), SaturatingMultiply(T(2), T(3), &ResultOverflowed)); 302 EXPECT_FALSE(ResultOverflowed); 303 304 EXPECT_EQ(T(6), SaturatingMultiply(T(3), T(2))); 305 EXPECT_EQ(T(6), SaturatingMultiply(T(3), T(2), &ResultOverflowed)); 306 EXPECT_FALSE(ResultOverflowed); 307 308 // Test multiplication by zero. 309 EXPECT_EQ(T(0), SaturatingMultiply(T(0), T(0))); 310 EXPECT_EQ(T(0), SaturatingMultiply(T(0), T(0), &ResultOverflowed)); 311 EXPECT_FALSE(ResultOverflowed); 312 313 EXPECT_EQ(T(0), SaturatingMultiply(T(1), T(0))); 314 EXPECT_EQ(T(0), SaturatingMultiply(T(1), T(0), &ResultOverflowed)); 315 EXPECT_FALSE(ResultOverflowed); 316 317 EXPECT_EQ(T(0), SaturatingMultiply(T(0), T(1))); 318 EXPECT_EQ(T(0), SaturatingMultiply(T(0), T(1), &ResultOverflowed)); 319 EXPECT_FALSE(ResultOverflowed); 320 321 EXPECT_EQ(T(0), SaturatingMultiply(Max, T(0))); 322 EXPECT_EQ(T(0), SaturatingMultiply(Max, T(0), &ResultOverflowed)); 323 EXPECT_FALSE(ResultOverflowed); 324 325 EXPECT_EQ(T(0), SaturatingMultiply(T(0), Max)); 326 EXPECT_EQ(T(0), SaturatingMultiply(T(0), Max, &ResultOverflowed)); 327 EXPECT_FALSE(ResultOverflowed); 328 329 // Test multiplication by maximum value. 330 EXPECT_EQ(Max, SaturatingMultiply(Max, T(2))); 331 EXPECT_EQ(Max, SaturatingMultiply(Max, T(2), &ResultOverflowed)); 332 EXPECT_TRUE(ResultOverflowed); 333 334 EXPECT_EQ(Max, SaturatingMultiply(T(2), Max)); 335 EXPECT_EQ(Max, SaturatingMultiply(T(2), Max, &ResultOverflowed)); 336 EXPECT_TRUE(ResultOverflowed); 337 338 EXPECT_EQ(Max, SaturatingMultiply(Max, Max)); 339 EXPECT_EQ(Max, SaturatingMultiply(Max, Max, &ResultOverflowed)); 340 EXPECT_TRUE(ResultOverflowed); 341 342 // Test interesting boundary conditions for algorithm - 343 // ((1 << A) - 1) * ((1 << B) + K) for K in [-1, 0, 1] 344 // and A + B == std::numeric_limits<T>::digits. 345 // We expect overflow iff A > B and K = 1. 346 const int Digits = std::numeric_limits<T>::digits; 347 for (int A = 1, B = Digits - 1; B >= 1; ++A, --B) { 348 for (int K = -1; K <= 1; ++K) { 349 T X = (T(1) << A) - T(1); 350 T Y = (T(1) << B) + K; 351 bool OverflowExpected = A > B && K == 1; 352 353 if(OverflowExpected) { 354 EXPECT_EQ(Max, SaturatingMultiply(X, Y)); 355 EXPECT_EQ(Max, SaturatingMultiply(X, Y, &ResultOverflowed)); 356 EXPECT_TRUE(ResultOverflowed); 357 } else { 358 EXPECT_EQ(X * Y, SaturatingMultiply(X, Y)); 359 EXPECT_EQ(X * Y, SaturatingMultiply(X, Y, &ResultOverflowed)); 360 EXPECT_FALSE(ResultOverflowed); 361 } 362 } 363 } 364 } 365 366 TEST(MathExtras, SaturatingMultiply) { 367 SaturatingMultiplyTestHelper<uint8_t>(); 368 SaturatingMultiplyTestHelper<uint16_t>(); 369 SaturatingMultiplyTestHelper<uint32_t>(); 370 SaturatingMultiplyTestHelper<uint64_t>(); 371 } 372 373 template<typename T> 374 void SaturatingMultiplyAddTestHelper() 375 { 376 const T Max = std::numeric_limits<T>::max(); 377 bool ResultOverflowed; 378 379 // Test basic multiply-add. 380 EXPECT_EQ(T(16), SaturatingMultiplyAdd(T(2), T(3), T(10))); 381 EXPECT_EQ(T(16), SaturatingMultiplyAdd(T(2), T(3), T(10), &ResultOverflowed)); 382 EXPECT_FALSE(ResultOverflowed); 383 384 // Test multiply overflows, add doesn't overflow 385 EXPECT_EQ(Max, SaturatingMultiplyAdd(Max, Max, T(0), &ResultOverflowed)); 386 EXPECT_TRUE(ResultOverflowed); 387 388 // Test multiply doesn't overflow, add overflows 389 EXPECT_EQ(Max, SaturatingMultiplyAdd(T(1), T(1), Max, &ResultOverflowed)); 390 EXPECT_TRUE(ResultOverflowed); 391 392 // Test multiply-add with Max as operand 393 EXPECT_EQ(Max, SaturatingMultiplyAdd(T(1), T(1), Max, &ResultOverflowed)); 394 EXPECT_TRUE(ResultOverflowed); 395 396 EXPECT_EQ(Max, SaturatingMultiplyAdd(T(1), Max, T(1), &ResultOverflowed)); 397 EXPECT_TRUE(ResultOverflowed); 398 399 EXPECT_EQ(Max, SaturatingMultiplyAdd(Max, Max, T(1), &ResultOverflowed)); 400 EXPECT_TRUE(ResultOverflowed); 401 402 EXPECT_EQ(Max, SaturatingMultiplyAdd(Max, Max, Max, &ResultOverflowed)); 403 EXPECT_TRUE(ResultOverflowed); 404 405 // Test multiply-add with 0 as operand 406 EXPECT_EQ(T(1), SaturatingMultiplyAdd(T(1), T(1), T(0), &ResultOverflowed)); 407 EXPECT_FALSE(ResultOverflowed); 408 409 EXPECT_EQ(T(1), SaturatingMultiplyAdd(T(1), T(0), T(1), &ResultOverflowed)); 410 EXPECT_FALSE(ResultOverflowed); 411 412 EXPECT_EQ(T(1), SaturatingMultiplyAdd(T(0), T(0), T(1), &ResultOverflowed)); 413 EXPECT_FALSE(ResultOverflowed); 414 415 EXPECT_EQ(T(0), SaturatingMultiplyAdd(T(0), T(0), T(0), &ResultOverflowed)); 416 EXPECT_FALSE(ResultOverflowed); 417 418 } 419 420 TEST(MathExtras, SaturatingMultiplyAdd) { 421 SaturatingMultiplyAddTestHelper<uint8_t>(); 422 SaturatingMultiplyAddTestHelper<uint16_t>(); 423 SaturatingMultiplyAddTestHelper<uint32_t>(); 424 SaturatingMultiplyAddTestHelper<uint64_t>(); 425 } 426 427 TEST(MathExtras, IsShiftedUInt) { 428 EXPECT_TRUE((isShiftedUInt<1, 0>(0))); 429 EXPECT_TRUE((isShiftedUInt<1, 0>(1))); 430 EXPECT_FALSE((isShiftedUInt<1, 0>(2))); 431 EXPECT_FALSE((isShiftedUInt<1, 0>(3))); 432 EXPECT_FALSE((isShiftedUInt<1, 0>(0x8000000000000000))); 433 EXPECT_TRUE((isShiftedUInt<1, 63>(0x8000000000000000))); 434 EXPECT_TRUE((isShiftedUInt<2, 62>(0xC000000000000000))); 435 EXPECT_FALSE((isShiftedUInt<2, 62>(0xE000000000000000))); 436 437 // 0x201 is ten bits long and has a 1 in the MSB and LSB. 438 EXPECT_TRUE((isShiftedUInt<10, 5>(uint64_t(0x201) << 5))); 439 EXPECT_FALSE((isShiftedUInt<10, 5>(uint64_t(0x201) << 4))); 440 EXPECT_FALSE((isShiftedUInt<10, 5>(uint64_t(0x201) << 6))); 441 } 442 443 TEST(MathExtras, IsShiftedInt) { 444 EXPECT_TRUE((isShiftedInt<1, 0>(0))); 445 EXPECT_TRUE((isShiftedInt<1, 0>(-1))); 446 EXPECT_FALSE((isShiftedInt<1, 0>(2))); 447 EXPECT_FALSE((isShiftedInt<1, 0>(3))); 448 EXPECT_FALSE((isShiftedInt<1, 0>(0x8000000000000000))); 449 EXPECT_TRUE((isShiftedInt<1, 63>(0x8000000000000000))); 450 EXPECT_TRUE((isShiftedInt<2, 62>(0xC000000000000000))); 451 EXPECT_FALSE((isShiftedInt<2, 62>(0xE000000000000000))); 452 453 // 0x201 is ten bits long and has a 1 in the MSB and LSB. 454 EXPECT_TRUE((isShiftedInt<11, 5>(int64_t(0x201) << 5))); 455 EXPECT_FALSE((isShiftedInt<11, 5>(int64_t(0x201) << 3))); 456 EXPECT_FALSE((isShiftedInt<11, 5>(int64_t(0x201) << 6))); 457 EXPECT_TRUE((isShiftedInt<11, 5>(-(int64_t(0x201) << 5)))); 458 EXPECT_FALSE((isShiftedInt<11, 5>(-(int64_t(0x201) << 3)))); 459 EXPECT_FALSE((isShiftedInt<11, 5>(-(int64_t(0x201) << 6)))); 460 461 EXPECT_TRUE((isShiftedInt<6, 10>(-(int64_t(1) << 15)))); 462 EXPECT_FALSE((isShiftedInt<6, 10>(int64_t(1) << 15))); 463 } 464 465 } // namespace 466