1 //===-- Unittests for ceil ------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "src/math/ceil.h" 10 #include "utils/FPUtil/FPBits.h" 11 #include "utils/FPUtil/TestHelpers.h" 12 #include "utils/MPFRWrapper/MPFRUtils.h" 13 #include "utils/UnitTest/Test.h" 14 #include <math.h> 15 16 using FPBits = __llvm_libc::fputil::FPBits<double>; 17 18 namespace mpfr = __llvm_libc::testing::mpfr; 19 20 DECLARE_SPECIAL_CONSTANTS(double) 21 22 TEST(LlvmLibcCeilTest, SpecialNumbers) { 23 EXPECT_FP_EQ(zero, __llvm_libc::ceil(zero)); 24 EXPECT_FP_EQ(negZero, __llvm_libc::ceil(negZero)); 25 26 EXPECT_FP_EQ(inf, __llvm_libc::ceil(inf)); 27 EXPECT_FP_EQ(negInf, __llvm_libc::ceil(negInf)); 28 29 EXPECT_FP_EQ(aNaN, __llvm_libc::ceil(aNaN)); 30 } 31 32 TEST(LlvmLibcCeilTest, RoundedNumbers) { 33 EXPECT_FP_EQ(1.0, __llvm_libc::ceil(1.0)); 34 EXPECT_FP_EQ(-1.0, __llvm_libc::ceil(-1.0)); 35 EXPECT_FP_EQ(10.0, __llvm_libc::ceil(10.0)); 36 EXPECT_FP_EQ(-10.0, __llvm_libc::ceil(-10.0)); 37 EXPECT_FP_EQ(1234.0, __llvm_libc::ceil(1234.0)); 38 EXPECT_FP_EQ(-1234.0, __llvm_libc::ceil(-1234.0)); 39 } 40 41 TEST(LlvmLibcCeilTest, Fractions) { 42 EXPECT_FP_EQ(1.0, __llvm_libc::ceil(0.5)); 43 EXPECT_FP_EQ(-0.0, __llvm_libc::ceil(-0.5)); 44 EXPECT_FP_EQ(1.0, __llvm_libc::ceil(0.115)); 45 EXPECT_FP_EQ(-0.0, __llvm_libc::ceil(-0.115)); 46 EXPECT_FP_EQ(1.0, __llvm_libc::ceil(0.715)); 47 EXPECT_FP_EQ(-0.0, __llvm_libc::ceil(-0.715)); 48 EXPECT_FP_EQ(2.0, __llvm_libc::ceil(1.3)); 49 EXPECT_FP_EQ(-1.0, __llvm_libc::ceil(-1.3)); 50 EXPECT_FP_EQ(2.0, __llvm_libc::ceil(1.5)); 51 EXPECT_FP_EQ(-1.0, __llvm_libc::ceil(-1.5)); 52 EXPECT_FP_EQ(2.0, __llvm_libc::ceil(1.75)); 53 EXPECT_FP_EQ(-1.0, __llvm_libc::ceil(-1.75)); 54 EXPECT_FP_EQ(11.0, __llvm_libc::ceil(10.32)); 55 EXPECT_FP_EQ(-10.0, __llvm_libc::ceil(-10.32)); 56 EXPECT_FP_EQ(11.0, __llvm_libc::ceil(10.65)); 57 EXPECT_FP_EQ(-10.0, __llvm_libc::ceil(-10.65)); 58 EXPECT_FP_EQ(1235.0, __llvm_libc::ceil(1234.38)); 59 EXPECT_FP_EQ(-1234.0, __llvm_libc::ceil(-1234.38)); 60 EXPECT_FP_EQ(1235.0, __llvm_libc::ceil(1234.96)); 61 EXPECT_FP_EQ(-1234.0, __llvm_libc::ceil(-1234.96)); 62 } 63 64 TEST(LlvmLibcCeilTest, InDoubleRange) { 65 using UIntType = FPBits::UIntType; 66 constexpr UIntType count = 10000000; 67 constexpr UIntType step = UIntType(-1) / count; 68 for (UIntType i = 0, v = 0; i <= count; ++i, v += step) { 69 double x = FPBits(v); 70 if (isnan(x) || isinf(x)) 71 continue; 72 73 ASSERT_MPFR_MATCH(mpfr::Operation::Ceil, x, __llvm_libc::ceil(x), 0.0); 74 } 75 } 76