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1//===-- Unittests for nanbf16 ---------------------------------------------===//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/signal_macros.h"10#include "src/__support/FPUtil/FPBits.h"11#include "src/__support/FPUtil/bfloat16.h"12#include "src/math/nanbf16.h"13#include "test/UnitTest/FEnvSafeTest.h"14#include "test/UnitTest/FPMatcher.h"15#include "test/UnitTest/Test.h"16 17class LlvmLibcNanf16Test : public LIBC_NAMESPACE::testing::FEnvSafeTest {18public:19  using StorageType = LIBC_NAMESPACE::fputil::FPBits<bfloat16>::StorageType;20 21  void run_test(const char *input_str, StorageType bits) {22    bfloat16 result = LIBC_NAMESPACE::nanbf16(input_str);23    auto actual_fp = LIBC_NAMESPACE::fputil::FPBits<bfloat16>(result);24    auto expected_fp = LIBC_NAMESPACE::fputil::FPBits<bfloat16>(bits);25    EXPECT_EQ(actual_fp.uintval(), expected_fp.uintval());26  }27};28 29TEST_F(LlvmLibcNanf16Test, NCharSeq) {30  run_test("", 0x7fc0);31 32  // 0x7fc0 + 0x1f (31) = 0x7cdf33  run_test("31", 0x7fdf);34 35  // 0x7fc0 + 0x15 = 0x7fd536  run_test("0x15", 0x7fd5);37 38  run_test("1a", 0x7fc0);39  run_test("1234567890qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM_",40           0x7fc0);41  run_test("10000000000000000000000000000", 0x7fc0);42}43 44TEST_F(LlvmLibcNanf16Test, RandomString) {45  run_test(" 1234", 0x7fc0);46  run_test("-1234", 0x7fc0);47  run_test("asd&f", 0x7fc0);48  run_test("123 ", 0x7fc0);49}50 51#if defined(LIBC_ADD_NULL_CHECKS)52TEST_F(LlvmLibcNanf16Test, InvalidInput) {53  EXPECT_DEATH([] { LIBC_NAMESPACE::nanbf16(nullptr); }, WITH_SIGNAL(-1));54}55#endif // LIBC_ADD_NULL_CHECKS56