Cold-Air-Networks/mirror-llvm-project
2
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions 7

[libc] Add conversion tests between emulated and native f128 (#213422)

Browse source 
Adds conversion tests between emulated and native float128 type, which
would be later used in f128 functions .
This commit is contained in:
Zorojuro 2026-08-01 19:36:57 +05:30 committed by GitHub
parent 610a3105af
commit 36b6f48f88
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
2 changed files with 24 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
libc/test/src/__support/FPUtil/CMakeLists.txt
View file

@ -49,6 +49,7 @@ add_fp_unittest(
libc.hdr.limits_macros
libc.src.__support.FPUtil.fenv_impl
libc.src.__support.FPUtil.float128
libc.src.__support.macros.properties.types
)
# TODO: Temporally disable bfloat16 test until MPCommon target is updated

23
libc/test/src/__support/FPUtil/float128_test.cpp
View file

@ -9,6 +9,7 @@
#include "hdr/limits_macros.h"
#include "src/__support/FPUtil/FEnvImpl.h"
#include "src/__support/FPUtil/float128.h"
#include "src/__support/macros/properties/types.h"
#include "test/UnitTest/FPMatcher.h"
#include "test/UnitTest/Test.h"
@ -142,3 +143,25 @@ TEST(LlvmLibcFloat128Test, FromIntegralTypes) {
ASSERT_EQ(static_cast<unsigned>(Float128(2147483648.0)), 2147483648U);
EXPECT_EQ(LIBC_NAMESPACE::fputil::test_except(FE_INVALID), 0);
}
#ifdef LIBC_TYPES_HAS_FLOAT128
TEST(LlvmLibcFloat128Test, NativeFloat128Conversion) {
// native to emulated float128
ASSERT_TRUE(Float128(static_cast<float128>(0.0)) == Float128(0.0));
ASSERT_TRUE(Float128(static_cast<float128>(1.5)) == Float128(1.5));
ASSERT_TRUE(Float128(static_cast<float128>(-1.5)) == Float128(-1.5));
ASSERT_TRUE(Float128(static_cast<float128>(1e300)) == Float128(1e300));
// emulated to native float128
ASSERT_TRUE(static_cast<float128>(Float128(0.0)) ==
static_cast<float128>(0.0));
ASSERT_TRUE(static_cast<float128>(Float128(3.14)) ==
static_cast<float128>(3.14));
ASSERT_TRUE(static_cast<float128>(Float128(-3.14)) ==
static_cast<float128>(-3.14));
ASSERT_TRUE(static_cast<float128>(FPBits::inf(Sign::POS).get_val()) ==
static_cast<float128>(FPBits::inf(Sign::POS).get_val()));
ASSERT_TRUE(static_cast<float128>(Float128(1e-300)) ==
static_cast<float128>(1e-300));
}
#endif // LIBC_TYPES_HAS_FLOAT128