1 //===-- Exhaustive test for logf ------------------------------------------===//
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 "exhaustive_test.h"
10 #include "src/__support/FPUtil/FPBits.h"
11 #include "src/math/logf.h"
12 #include "utils/MPFRWrapper/MPFRUtils.h"
13 #include "utils/UnitTest/FPMatcher.h"
14 
15 using FPBits = __llvm_libc::fputil::FPBits<float>;
16 
17 namespace mpfr = __llvm_libc::testing::mpfr;
18 
19 struct LlvmLibcLogfExhaustiveTest : public LlvmLibcExhaustiveTest<uint32_t> {
20   bool check(uint32_t start, uint32_t stop,
21              mpfr::RoundingMode rounding) override {
22     mpfr::ForceRoundingMode r(rounding);
23     uint32_t bits = start;
24     bool result = true;
25     do {
26       FPBits xbits(bits);
27       float x = float(xbits);
28       result &= EXPECT_MPFR_MATCH(mpfr::Operation::Log, x, __llvm_libc::logf(x),
29                                   0.5, rounding);
30     } while (bits++ < stop);
31     return result;
32   }
33 };
34 
35 TEST_F(LlvmLibcLogfExhaustiveTest, RoundNearestTieToEven) {
36   test_full_range(/*start=*/0U, /*stop=*/0x7f80'0000U, /*nthreads=*/16,
37                   mpfr::RoundingMode::Nearest);
38 }
39 
40 TEST_F(LlvmLibcLogfExhaustiveTest, RoundUp) {
41   test_full_range(/*start=*/0U, /*stop=*/0x7f80'0000U, /*nthreads=*/16,
42                   mpfr::RoundingMode::Upward);
43 }
44 
45 TEST_F(LlvmLibcLogfExhaustiveTest, RoundDown) {
46   test_full_range(/*start=*/0U, /*stop=*/0x7f80'0000U, /*nthreads=*/16,
47                   mpfr::RoundingMode::Downward);
48 }
49 
50 TEST_F(LlvmLibcLogfExhaustiveTest, RoundTowardZero) {
51   test_full_range(/*start=*/0U, /*stop=*/0x7f80'0000U, /*nthreads=*/16,
52                   mpfr::RoundingMode::TowardZero);
53 }
54