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 EXPECT_EQ(0xFFFFFFFFFFFFFFFFULL, maskTrailingOnes<uint64_t>(64U)); 88 EXPECT_EQ(0xFFFFFFFFFFFFFFFFULL, maskLeadingOnes<uint64_t>(64U)); 89 90 EXPECT_EQ(0x0000FFFFFFFFFFFFULL, maskTrailingOnes<uint64_t>(48U)); 91 EXPECT_EQ(0xFFFFFFFFFFFF0000ULL, maskLeadingOnes<uint64_t>(48U)); 92 } 93 94 TEST(MathExtras, findFirstSet) { 95 uint8_t Z8 = 0; 96 uint16_t Z16 = 0; 97 uint32_t Z32 = 0; 98 uint64_t Z64 = 0; 99 EXPECT_EQ(0xFFULL, findFirstSet(Z8)); 100 EXPECT_EQ(0xFFFFULL, findFirstSet(Z16)); 101 EXPECT_EQ(0xFFFFFFFFULL, findFirstSet(Z32)); 102 EXPECT_EQ(0xFFFFFFFFFFFFFFFFULL, findFirstSet(Z64)); 103 104 uint8_t NZ8 = 42; 105 uint16_t NZ16 = 42; 106 uint32_t NZ32 = 42; 107 uint64_t NZ64 = 42; 108 EXPECT_EQ(1u, findFirstSet(NZ8)); 109 EXPECT_EQ(1u, findFirstSet(NZ16)); 110 EXPECT_EQ(1u, findFirstSet(NZ32)); 111 EXPECT_EQ(1u, findFirstSet(NZ64)); 112 } 113 114 TEST(MathExtras, findLastSet) { 115 uint8_t Z8 = 0; 116 uint16_t Z16 = 0; 117 uint32_t Z32 = 0; 118 uint64_t Z64 = 0; 119 EXPECT_EQ(0xFFULL, findLastSet(Z8)); 120 EXPECT_EQ(0xFFFFULL, findLastSet(Z16)); 121 EXPECT_EQ(0xFFFFFFFFULL, findLastSet(Z32)); 122 EXPECT_EQ(0xFFFFFFFFFFFFFFFFULL, findLastSet(Z64)); 123 124 uint8_t NZ8 = 42; 125 uint16_t NZ16 = 42; 126 uint32_t NZ32 = 42; 127 uint64_t NZ64 = 42; 128 EXPECT_EQ(5u, findLastSet(NZ8)); 129 EXPECT_EQ(5u, findLastSet(NZ16)); 130 EXPECT_EQ(5u, findLastSet(NZ32)); 131 EXPECT_EQ(5u, findLastSet(NZ64)); 132 } 133 134 TEST(MathExtras, isIntN) { 135 EXPECT_TRUE(isIntN(16, 32767)); 136 EXPECT_FALSE(isIntN(16, 32768)); 137 } 138 139 TEST(MathExtras, isUIntN) { 140 EXPECT_TRUE(isUIntN(16, 65535)); 141 EXPECT_FALSE(isUIntN(16, 65536)); 142 EXPECT_TRUE(isUIntN(1, 0)); 143 EXPECT_TRUE(isUIntN(6, 63)); 144 } 145 146 TEST(MathExtras, maxIntN) { 147 EXPECT_EQ(32767, maxIntN(16)); 148 EXPECT_EQ(2147483647, maxIntN(32)); 149 EXPECT_EQ(std::numeric_limits<int32_t>::max(), maxIntN(32)); 150 EXPECT_EQ(std::numeric_limits<int64_t>::max(), maxIntN(64)); 151 } 152 153 TEST(MathExtras, minIntN) { 154 EXPECT_EQ(-32768LL, minIntN(16)); 155 EXPECT_EQ(-64LL, minIntN(7)); 156 EXPECT_EQ(std::numeric_limits<int32_t>::min(), minIntN(32)); 157 EXPECT_EQ(std::numeric_limits<int64_t>::min(), minIntN(64)); 158 } 159 160 TEST(MathExtras, maxUIntN) { 161 EXPECT_EQ(0xffffULL, maxUIntN(16)); 162 EXPECT_EQ(0xffffffffULL, maxUIntN(32)); 163 EXPECT_EQ(0xffffffffffffffffULL, maxUIntN(64)); 164 EXPECT_EQ(1ULL, maxUIntN(1)); 165 EXPECT_EQ(0x0fULL, maxUIntN(4)); 166 } 167 168 TEST(MathExtras, reverseBits) { 169 uint8_t NZ8 = 42; 170 uint16_t NZ16 = 42; 171 uint32_t NZ32 = 42; 172 uint64_t NZ64 = 42; 173 EXPECT_EQ(0x54ULL, reverseBits(NZ8)); 174 EXPECT_EQ(0x5400ULL, reverseBits(NZ16)); 175 EXPECT_EQ(0x54000000ULL, reverseBits(NZ32)); 176 EXPECT_EQ(0x5400000000000000ULL, reverseBits(NZ64)); 177 } 178 179 TEST(MathExtras, isPowerOf2_32) { 180 EXPECT_TRUE(isPowerOf2_32(1 << 6)); 181 EXPECT_TRUE(isPowerOf2_32(1 << 12)); 182 EXPECT_FALSE(isPowerOf2_32((1 << 19) + 3)); 183 EXPECT_FALSE(isPowerOf2_32(0xABCDEF0)); 184 } 185 186 TEST(MathExtras, isPowerOf2_64) { 187 EXPECT_TRUE(isPowerOf2_64(1LL << 46)); 188 EXPECT_TRUE(isPowerOf2_64(1LL << 12)); 189 EXPECT_FALSE(isPowerOf2_64((1LL << 53) + 3)); 190 EXPECT_FALSE(isPowerOf2_64(0xABCDEF0ABCDEF0LL)); 191 } 192 193 TEST(MathExtras, PowerOf2Ceil) { 194 EXPECT_EQ(0U, PowerOf2Ceil(0U)); 195 EXPECT_EQ(8U, PowerOf2Ceil(8U)); 196 EXPECT_EQ(8U, PowerOf2Ceil(7U)); 197 } 198 199 TEST(MathExtras, PowerOf2Floor) { 200 EXPECT_EQ(0U, PowerOf2Floor(0U)); 201 EXPECT_EQ(8U, PowerOf2Floor(8U)); 202 EXPECT_EQ(4U, PowerOf2Floor(7U)); 203 } 204 205 TEST(MathExtras, ByteSwap_32) { 206 EXPECT_EQ(0x44332211u, ByteSwap_32(0x11223344)); 207 EXPECT_EQ(0xDDCCBBAAu, ByteSwap_32(0xAABBCCDD)); 208 } 209 210 TEST(MathExtras, ByteSwap_64) { 211 EXPECT_EQ(0x8877665544332211ULL, ByteSwap_64(0x1122334455667788LL)); 212 EXPECT_EQ(0x1100FFEEDDCCBBAAULL, ByteSwap_64(0xAABBCCDDEEFF0011LL)); 213 } 214 215 TEST(MathExtras, countLeadingOnes) { 216 for (int i = 30; i >= 0; --i) { 217 // Start with all ones and unset some bit. 218 EXPECT_EQ(31u - i, countLeadingOnes(0xFFFFFFFF ^ (1 << i))); 219 } 220 for (int i = 62; i >= 0; --i) { 221 // Start with all ones and unset some bit. 222 EXPECT_EQ(63u - i, countLeadingOnes(0xFFFFFFFFFFFFFFFFULL ^ (1LL << i))); 223 } 224 for (int i = 30; i >= 0; --i) { 225 // Start with all ones and unset some bit. 226 EXPECT_EQ(31u - i, countLeadingOnes(0xFFFFFFFF ^ (1 << i))); 227 } 228 } 229 230 TEST(MathExtras, FloatBits) { 231 static const float kValue = 5632.34f; 232 EXPECT_FLOAT_EQ(kValue, BitsToFloat(FloatToBits(kValue))); 233 } 234 235 TEST(MathExtras, DoubleBits) { 236 static const double kValue = 87987234.983498; 237 EXPECT_DOUBLE_EQ(kValue, BitsToDouble(DoubleToBits(kValue))); 238 } 239 240 TEST(MathExtras, MinAlign) { 241 EXPECT_EQ(1u, MinAlign(2, 3)); 242 EXPECT_EQ(2u, MinAlign(2, 4)); 243 EXPECT_EQ(1u, MinAlign(17, 64)); 244 EXPECT_EQ(256u, MinAlign(256, 512)); 245 } 246 247 TEST(MathExtras, NextPowerOf2) { 248 EXPECT_EQ(4u, NextPowerOf2(3)); 249 EXPECT_EQ(16u, NextPowerOf2(15)); 250 EXPECT_EQ(256u, NextPowerOf2(128)); 251 } 252 253 TEST(MathExtras, alignTo) { 254 EXPECT_EQ(8u, alignTo(5, 8)); 255 EXPECT_EQ(24u, alignTo(17, 8)); 256 EXPECT_EQ(0u, alignTo(~0LL, 8)); 257 258 EXPECT_EQ(7u, alignTo(5, 8, 7)); 259 EXPECT_EQ(17u, alignTo(17, 8, 1)); 260 EXPECT_EQ(3u, alignTo(~0LL, 8, 3)); 261 EXPECT_EQ(552u, alignTo(321, 255, 42)); 262 } 263 264 template<typename T> 265 void SaturatingAddTestHelper() 266 { 267 const T Max = std::numeric_limits<T>::max(); 268 bool ResultOverflowed; 269 270 EXPECT_EQ(T(3), SaturatingAdd(T(1), T(2))); 271 EXPECT_EQ(T(3), SaturatingAdd(T(1), T(2), &ResultOverflowed)); 272 EXPECT_FALSE(ResultOverflowed); 273 274 EXPECT_EQ(Max, SaturatingAdd(Max, T(1))); 275 EXPECT_EQ(Max, SaturatingAdd(Max, T(1), &ResultOverflowed)); 276 EXPECT_TRUE(ResultOverflowed); 277 278 EXPECT_EQ(Max, SaturatingAdd(T(1), T(Max - 1))); 279 EXPECT_EQ(Max, SaturatingAdd(T(1), T(Max - 1), &ResultOverflowed)); 280 EXPECT_FALSE(ResultOverflowed); 281 282 EXPECT_EQ(Max, SaturatingAdd(T(1), Max)); 283 EXPECT_EQ(Max, SaturatingAdd(T(1), Max, &ResultOverflowed)); 284 EXPECT_TRUE(ResultOverflowed); 285 286 EXPECT_EQ(Max, SaturatingAdd(Max, Max)); 287 EXPECT_EQ(Max, SaturatingAdd(Max, Max, &ResultOverflowed)); 288 EXPECT_TRUE(ResultOverflowed); 289 } 290 291 TEST(MathExtras, SaturatingAdd) { 292 SaturatingAddTestHelper<uint8_t>(); 293 SaturatingAddTestHelper<uint16_t>(); 294 SaturatingAddTestHelper<uint32_t>(); 295 SaturatingAddTestHelper<uint64_t>(); 296 } 297 298 template<typename T> 299 void SaturatingMultiplyTestHelper() 300 { 301 const T Max = std::numeric_limits<T>::max(); 302 bool ResultOverflowed; 303 304 // Test basic multiplication. 305 EXPECT_EQ(T(6), SaturatingMultiply(T(2), T(3))); 306 EXPECT_EQ(T(6), SaturatingMultiply(T(2), T(3), &ResultOverflowed)); 307 EXPECT_FALSE(ResultOverflowed); 308 309 EXPECT_EQ(T(6), SaturatingMultiply(T(3), T(2))); 310 EXPECT_EQ(T(6), SaturatingMultiply(T(3), T(2), &ResultOverflowed)); 311 EXPECT_FALSE(ResultOverflowed); 312 313 // Test multiplication by zero. 314 EXPECT_EQ(T(0), SaturatingMultiply(T(0), T(0))); 315 EXPECT_EQ(T(0), SaturatingMultiply(T(0), T(0), &ResultOverflowed)); 316 EXPECT_FALSE(ResultOverflowed); 317 318 EXPECT_EQ(T(0), SaturatingMultiply(T(1), T(0))); 319 EXPECT_EQ(T(0), SaturatingMultiply(T(1), T(0), &ResultOverflowed)); 320 EXPECT_FALSE(ResultOverflowed); 321 322 EXPECT_EQ(T(0), SaturatingMultiply(T(0), T(1))); 323 EXPECT_EQ(T(0), SaturatingMultiply(T(0), T(1), &ResultOverflowed)); 324 EXPECT_FALSE(ResultOverflowed); 325 326 EXPECT_EQ(T(0), SaturatingMultiply(Max, T(0))); 327 EXPECT_EQ(T(0), SaturatingMultiply(Max, T(0), &ResultOverflowed)); 328 EXPECT_FALSE(ResultOverflowed); 329 330 EXPECT_EQ(T(0), SaturatingMultiply(T(0), Max)); 331 EXPECT_EQ(T(0), SaturatingMultiply(T(0), Max, &ResultOverflowed)); 332 EXPECT_FALSE(ResultOverflowed); 333 334 // Test multiplication by maximum value. 335 EXPECT_EQ(Max, SaturatingMultiply(Max, T(2))); 336 EXPECT_EQ(Max, SaturatingMultiply(Max, T(2), &ResultOverflowed)); 337 EXPECT_TRUE(ResultOverflowed); 338 339 EXPECT_EQ(Max, SaturatingMultiply(T(2), Max)); 340 EXPECT_EQ(Max, SaturatingMultiply(T(2), Max, &ResultOverflowed)); 341 EXPECT_TRUE(ResultOverflowed); 342 343 EXPECT_EQ(Max, SaturatingMultiply(Max, Max)); 344 EXPECT_EQ(Max, SaturatingMultiply(Max, Max, &ResultOverflowed)); 345 EXPECT_TRUE(ResultOverflowed); 346 347 // Test interesting boundary conditions for algorithm - 348 // ((1 << A) - 1) * ((1 << B) + K) for K in [-1, 0, 1] 349 // and A + B == std::numeric_limits<T>::digits. 350 // We expect overflow iff A > B and K = 1. 351 const int Digits = std::numeric_limits<T>::digits; 352 for (int A = 1, B = Digits - 1; B >= 1; ++A, --B) { 353 for (int K = -1; K <= 1; ++K) { 354 T X = (T(1) << A) - T(1); 355 T Y = (T(1) << B) + K; 356 bool OverflowExpected = A > B && K == 1; 357 358 if(OverflowExpected) { 359 EXPECT_EQ(Max, SaturatingMultiply(X, Y)); 360 EXPECT_EQ(Max, SaturatingMultiply(X, Y, &ResultOverflowed)); 361 EXPECT_TRUE(ResultOverflowed); 362 } else { 363 EXPECT_EQ(X * Y, SaturatingMultiply(X, Y)); 364 EXPECT_EQ(X * Y, SaturatingMultiply(X, Y, &ResultOverflowed)); 365 EXPECT_FALSE(ResultOverflowed); 366 } 367 } 368 } 369 } 370 371 TEST(MathExtras, SaturatingMultiply) { 372 SaturatingMultiplyTestHelper<uint8_t>(); 373 SaturatingMultiplyTestHelper<uint16_t>(); 374 SaturatingMultiplyTestHelper<uint32_t>(); 375 SaturatingMultiplyTestHelper<uint64_t>(); 376 } 377 378 template<typename T> 379 void SaturatingMultiplyAddTestHelper() 380 { 381 const T Max = std::numeric_limits<T>::max(); 382 bool ResultOverflowed; 383 384 // Test basic multiply-add. 385 EXPECT_EQ(T(16), SaturatingMultiplyAdd(T(2), T(3), T(10))); 386 EXPECT_EQ(T(16), SaturatingMultiplyAdd(T(2), T(3), T(10), &ResultOverflowed)); 387 EXPECT_FALSE(ResultOverflowed); 388 389 // Test multiply overflows, add doesn't overflow 390 EXPECT_EQ(Max, SaturatingMultiplyAdd(Max, Max, T(0), &ResultOverflowed)); 391 EXPECT_TRUE(ResultOverflowed); 392 393 // Test multiply doesn't overflow, add overflows 394 EXPECT_EQ(Max, SaturatingMultiplyAdd(T(1), T(1), Max, &ResultOverflowed)); 395 EXPECT_TRUE(ResultOverflowed); 396 397 // Test multiply-add with Max as operand 398 EXPECT_EQ(Max, SaturatingMultiplyAdd(T(1), T(1), Max, &ResultOverflowed)); 399 EXPECT_TRUE(ResultOverflowed); 400 401 EXPECT_EQ(Max, SaturatingMultiplyAdd(T(1), Max, T(1), &ResultOverflowed)); 402 EXPECT_TRUE(ResultOverflowed); 403 404 EXPECT_EQ(Max, SaturatingMultiplyAdd(Max, Max, T(1), &ResultOverflowed)); 405 EXPECT_TRUE(ResultOverflowed); 406 407 EXPECT_EQ(Max, SaturatingMultiplyAdd(Max, Max, Max, &ResultOverflowed)); 408 EXPECT_TRUE(ResultOverflowed); 409 410 // Test multiply-add with 0 as operand 411 EXPECT_EQ(T(1), SaturatingMultiplyAdd(T(1), T(1), T(0), &ResultOverflowed)); 412 EXPECT_FALSE(ResultOverflowed); 413 414 EXPECT_EQ(T(1), SaturatingMultiplyAdd(T(1), T(0), T(1), &ResultOverflowed)); 415 EXPECT_FALSE(ResultOverflowed); 416 417 EXPECT_EQ(T(1), SaturatingMultiplyAdd(T(0), T(0), T(1), &ResultOverflowed)); 418 EXPECT_FALSE(ResultOverflowed); 419 420 EXPECT_EQ(T(0), SaturatingMultiplyAdd(T(0), T(0), T(0), &ResultOverflowed)); 421 EXPECT_FALSE(ResultOverflowed); 422 423 } 424 425 TEST(MathExtras, SaturatingMultiplyAdd) { 426 SaturatingMultiplyAddTestHelper<uint8_t>(); 427 SaturatingMultiplyAddTestHelper<uint16_t>(); 428 SaturatingMultiplyAddTestHelper<uint32_t>(); 429 SaturatingMultiplyAddTestHelper<uint64_t>(); 430 } 431 432 TEST(MathExtras, IsShiftedUInt) { 433 EXPECT_TRUE((isShiftedUInt<1, 0>(0))); 434 EXPECT_TRUE((isShiftedUInt<1, 0>(1))); 435 EXPECT_FALSE((isShiftedUInt<1, 0>(2))); 436 EXPECT_FALSE((isShiftedUInt<1, 0>(3))); 437 EXPECT_FALSE((isShiftedUInt<1, 0>(0x8000000000000000))); 438 EXPECT_TRUE((isShiftedUInt<1, 63>(0x8000000000000000))); 439 EXPECT_TRUE((isShiftedUInt<2, 62>(0xC000000000000000))); 440 EXPECT_FALSE((isShiftedUInt<2, 62>(0xE000000000000000))); 441 442 // 0x201 is ten bits long and has a 1 in the MSB and LSB. 443 EXPECT_TRUE((isShiftedUInt<10, 5>(uint64_t(0x201) << 5))); 444 EXPECT_FALSE((isShiftedUInt<10, 5>(uint64_t(0x201) << 4))); 445 EXPECT_FALSE((isShiftedUInt<10, 5>(uint64_t(0x201) << 6))); 446 } 447 448 TEST(MathExtras, IsShiftedInt) { 449 EXPECT_TRUE((isShiftedInt<1, 0>(0))); 450 EXPECT_TRUE((isShiftedInt<1, 0>(-1))); 451 EXPECT_FALSE((isShiftedInt<1, 0>(2))); 452 EXPECT_FALSE((isShiftedInt<1, 0>(3))); 453 EXPECT_FALSE((isShiftedInt<1, 0>(0x8000000000000000))); 454 EXPECT_TRUE((isShiftedInt<1, 63>(0x8000000000000000))); 455 EXPECT_TRUE((isShiftedInt<2, 62>(0xC000000000000000))); 456 EXPECT_FALSE((isShiftedInt<2, 62>(0xE000000000000000))); 457 458 // 0x201 is ten bits long and has a 1 in the MSB and LSB. 459 EXPECT_TRUE((isShiftedInt<11, 5>(int64_t(0x201) << 5))); 460 EXPECT_FALSE((isShiftedInt<11, 5>(int64_t(0x201) << 3))); 461 EXPECT_FALSE((isShiftedInt<11, 5>(int64_t(0x201) << 6))); 462 EXPECT_TRUE((isShiftedInt<11, 5>(-(int64_t(0x201) << 5)))); 463 EXPECT_FALSE((isShiftedInt<11, 5>(-(int64_t(0x201) << 3)))); 464 EXPECT_FALSE((isShiftedInt<11, 5>(-(int64_t(0x201) << 6)))); 465 466 EXPECT_TRUE((isShiftedInt<6, 10>(-(int64_t(1) << 15)))); 467 EXPECT_FALSE((isShiftedInt<6, 10>(int64_t(1) << 15))); 468 } 469 470 } // namespace 471