1 //===-- Unittests for ceill -----------------------------------------------===// 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 "include/math.h" 10 #include "src/math/ceill.h" 11 #include "utils/FPUtil/FPBits.h" 12 #include "utils/MPFRWrapper/MPFRUtils.h" 13 #include "utils/UnitTest/Test.h" 14 15 using FPBits = __llvm_libc::fputil::FPBits<long double>; 16 17 namespace mpfr = __llvm_libc::testing::mpfr; 18 19 // Zero tolerance; As in, exact match with MPFR result. 20 static constexpr mpfr::Tolerance tolerance{mpfr::Tolerance::doublePrecision, 0, 21 0}; 22 TEST(CeillTest, SpecialNumbers) { 23 ASSERT_TRUE(FPBits::zero() == __llvm_libc::ceill(FPBits::zero())); 24 ASSERT_TRUE(FPBits::negZero() == __llvm_libc::ceill(FPBits::negZero())); 25 26 ASSERT_TRUE(FPBits::inf() == __llvm_libc::ceill(FPBits::inf())); 27 ASSERT_TRUE(FPBits::negInf() == __llvm_libc::ceill(FPBits::negInf())); 28 29 long double nan = FPBits::buildNaN(1); 30 ASSERT_NE(isnan(nan), 0); 31 ASSERT_NE(isnan(__llvm_libc::ceill(nan)), 0); 32 } 33 34 TEST(CeillTest, RoundedNumbers) { 35 ASSERT_TRUE(FPBits(1.0l) == __llvm_libc::ceill(1.0l)); 36 ASSERT_TRUE(FPBits(-1.0l) == __llvm_libc::ceill(-1.0l)); 37 ASSERT_TRUE(FPBits(10.0l) == __llvm_libc::ceill(10.0l)); 38 ASSERT_TRUE(FPBits(-10.0l) == __llvm_libc::ceill(-10.0l)); 39 ASSERT_TRUE(FPBits(1234.0l) == __llvm_libc::ceill(1234.0l)); 40 ASSERT_TRUE(FPBits(-1234.0l) == __llvm_libc::ceill(-1234.0l)); 41 } 42 43 TEST(CeillTest, Fractions) { 44 ASSERT_TRUE(FPBits(2.0l) == __llvm_libc::ceill(1.3l)); 45 ASSERT_TRUE(FPBits(-1.0l) == __llvm_libc::ceill(-1.3l)); 46 ASSERT_TRUE(FPBits(2.0l) == __llvm_libc::ceill(1.5l)); 47 ASSERT_TRUE(FPBits(-1.0l) == __llvm_libc::ceill(-1.5l)); 48 ASSERT_TRUE(FPBits(2.0l) == __llvm_libc::ceill(1.75l)); 49 ASSERT_TRUE(FPBits(-1.0l) == __llvm_libc::ceill(-1.75l)); 50 ASSERT_TRUE(FPBits(11.0l) == __llvm_libc::ceill(10.32l)); 51 ASSERT_TRUE(FPBits(-10.0l) == __llvm_libc::ceill(-10.32l)); 52 ASSERT_TRUE(FPBits(11.0l) == __llvm_libc::ceill(10.65l)); 53 ASSERT_TRUE(FPBits(-10.0l) == __llvm_libc::ceill(-10.65l)); 54 ASSERT_TRUE(FPBits(1235.0l) == __llvm_libc::ceill(1234.18l)); 55 ASSERT_TRUE(FPBits(-1234.0l) == __llvm_libc::ceill(-1234.18l)); 56 ASSERT_TRUE(FPBits(1235.0l) == __llvm_libc::ceill(1234.96l)); 57 ASSERT_TRUE(FPBits(-1234.0l) == __llvm_libc::ceill(-1234.96l)); 58 } 59 60 TEST(CeillTest, InLongDoubleRange) { 61 using UIntType = FPBits::UIntType; 62 constexpr UIntType count = 10000000; 63 constexpr UIntType step = UIntType(-1) / count; 64 for (UIntType i = 0, v = 0; i <= count; ++i, v += step) { 65 long double x = FPBits(v); 66 if (isnan(x) || isinf(x)) 67 continue; 68 69 ASSERT_MPFR_MATCH(mpfr::Operation::Ceil, x, __llvm_libc::ceill(x), 70 tolerance); 71 } 72 } 73