43 lines · cpp
1//===-- Unittests for cbrtf -----------------------------------------------===//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-exception6//7//===----------------------------------------------------------------------===//8 9#include "hdr/math_macros.h"10#include "src/__support/FPUtil/FPBits.h"11#include "src/math/cbrtf.h"12#include "test/UnitTest/FPMatcher.h"13#include "test/UnitTest/Test.h"14#include "utils/MPFRWrapper/MPFRUtils.h"15 16using LlvmLibcCbrtfTest = LIBC_NAMESPACE::testing::FPTest<float>;17 18namespace mpfr = LIBC_NAMESPACE::testing::mpfr;19 20TEST_F(LlvmLibcCbrtfTest, InFloatRange) {21 constexpr uint32_t COUNT = 100'000;22 const uint32_t STEP = FPBits(inf).uintval() / COUNT;23 for (uint32_t i = 0, v = 0; i <= COUNT; ++i, v += STEP) {24 float x = FPBits(v).get_val();25 EXPECT_MPFR_MATCH_ALL_ROUNDING(mpfr::Operation::Cbrt, x,26 LIBC_NAMESPACE::cbrtf(x), 0.5);27 EXPECT_MPFR_MATCH_ALL_ROUNDING(mpfr::Operation::Cbrt, -x,28 LIBC_NAMESPACE::cbrtf(-x), 0.5);29 }30}31 32TEST_F(LlvmLibcCbrtfTest, SpecialValues) {33 constexpr float INPUTS[] = {34 0x1.60451p2f, 0x1.31304cp1f, 0x1.d17cp2f, 0x1.bp-143f, 0x1.338cp2f,35 };36 for (float v : INPUTS) {37 float x = FPBits(v).get_val();38 mpfr::ForceRoundingMode r(mpfr::RoundingMode::Upward);39 EXPECT_MPFR_MATCH(mpfr::Operation::Cbrt, x, LIBC_NAMESPACE::cbrtf(x), 0.5,40 mpfr::RoundingMode::Upward);41 }42}43