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chore: add smoke tests for nanbf16 math function

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Signed-off-by: Krishna Pandey <kpandey81930@gmail.com>
This commit is contained in:
Krishna Pandey 2025-08-17 08:42:41 +05:30
parent ea9625e60e
commit ae0e6165f5
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GPG Key ID: 20FD86C0096672D5
2 changed files with 71 additions and 0 deletions
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16
libc/test/src/math/smoke/CMakeLists.txt
View File

@ -3515,6 +3515,22 @@ add_fp_unittest(
UNIT_TEST_ONLY UNIT_TEST_ONLY
) )
add_fp_unittest(
nanbf16_test
SUITE
libc-math-smoke-tests
SRCS
nanbf16_test.cpp
DEPENDS
libc.hdr.signal_macros
libc.src.math.nanbf16
libc.src.__support.FPUtil.bfloat16
libc.src.__support.FPUtil.fp_bits
# FIXME: The nan tests currently have death tests, which aren't supported for
# hermetic tests.
UNIT_TEST_ONLY
)
add_fp_unittest( add_fp_unittest(
nearbyint_test nearbyint_test
SUITE SUITE

55
libc/test/src/math/smoke/nanbf16_test.cpp Normal file
View File

@ -0,0 +1,55 @@
//===-- Unittests for nanbf16 ---------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "hdr/signal_macros.h"
#include "src/__support/FPUtil/FPBits.h"
#include "src/__support/FPUtil/bfloat16.h"
#include "src/math/nanbf16.h"
#include "test/UnitTest/FEnvSafeTest.h"
#include "test/UnitTest/FPMatcher.h"
#include "test/UnitTest/Test.h"
class LlvmLibcNanf16Test : public LIBC_NAMESPACE::testing::FEnvSafeTest {
public:
using StorageType = LIBC_NAMESPACE::fputil::FPBits<bfloat16>::StorageType;
void run_test(const char *input_str, StorageType bits) {
bfloat16 result = LIBC_NAMESPACE::nanbf16(input_str);
auto actual_fp = LIBC_NAMESPACE::fputil::FPBits<bfloat16>(result);
auto expected_fp = LIBC_NAMESPACE::fputil::FPBits<bfloat16>(bits);
EXPECT_EQ(actual_fp.uintval(), expected_fp.uintval());
}
};
TEST_F(LlvmLibcNanf16Test, NCharSeq) {
run_test("", 0x7fc0);
// 0x7fc0 + 0x1f (31) = 0x7cdf
run_test("31", 0x7fdf);
// 0x7fc0 + 0x15 = 0x7fd5
run_test("0x15", 0x7fd5);
run_test("1a", 0x7fc0);
run_test("1234567890qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM_",
0x7fc0);
run_test("10000000000000000000000000000", 0x7fc0);
}
TEST_F(LlvmLibcNanf16Test, RandomString) {
run_test(" 1234", 0x7fc0);
run_test("-1234", 0x7fc0);
run_test("asd&f", 0x7fc0);
run_test("123 ", 0x7fc0);
}
#if defined(LIBC_ADD_NULL_CHECKS)
TEST_F(LlvmLibcNanf16Test, InvalidInput) {
EXPECT_DEATH([] { LIBC_NAMESPACE::nanbf16(nullptr); }, WITH_SIGNAL(-1));
}
#endif // LIBC_ADD_NULL_CHECKS