[libc] Update floating testing infra for MSVC compatibility. (#159810)

Author: lntue

libc/test/UnitTest/FEnvSafeTest.cpp

@@ -51,7 +51,8 @@ void FEnvSafeTest::expect_fenv_eq(const fenv_t &before_fenv,
   EXPECT_EQ(before_state.ControlWord, after_state.ControlWord);
   EXPECT_EQ(before_state.StatusWord, after_state.StatusWord);
 
-#elif defined(LIBC_TARGET_ARCH_IS_X86) && !defined(__APPLE__)
+#elif defined(LIBC_TARGET_ARCH_IS_X86) && !defined(__APPLE__) &&               \
+    !defined(LIBC_COMPILER_IS_MSVC)
   using LIBC_NAMESPACE::fputil::internal::FPState;
   const FPState &before_state = reinterpret_cast<const FPState &>(before_fenv);
   const FPState &after_state = reinterpret_cast<const FPState &>(after_fenv);

libc/test/UnitTest/FPMatcher.h

@@ -125,6 +125,7 @@ template <typename T, TestCond Condition> class CFPMatcher : public Matcher<T> {
 
   bool match(T actualValue) {
     actual = actualValue;
+#ifndef LIBC_COMPILER_IS_MSVC
     if constexpr (cpp::is_complex_type_same<T, _Complex float>())
       return matchComplex<float>();
     else if constexpr (cpp::is_complex_type_same<T, _Complex double>())
@@ -134,14 +135,18 @@ template <typename T, TestCond Condition> class CFPMatcher : public Matcher<T> {
 #ifdef LIBC_TYPES_HAS_CFLOAT16
     else if constexpr (cpp::is_complex_type_same<T, cfloat16>())
       return matchComplex<float16>();
-#endif
+#endif // LIBC_TYPES_HAS_CFLOAT16
 #ifdef LIBC_TYPES_HAS_CFLOAT128
     else if constexpr (cpp::is_complex_type_same<T, cfloat128>())
       return matchComplex<float128>();
-#endif
+#endif // LIBC_TYPES_HAS_CFLOAT128
+#else  // LIBC_COMPILER_IS_MSVC
+    return true;
+#endif // LIBC_COMPILER_IS_MSVC
   }
 
   void explainError() override {
+#ifndef LIBC_COMPILER_IS_MSVC
     if constexpr (cpp::is_complex_type_same<T, _Complex float>())
       return explainErrorComplex<float>();
     else if constexpr (cpp::is_complex_type_same<T, _Complex double>())
@@ -151,11 +156,12 @@ template <typename T, TestCond Condition> class CFPMatcher : public Matcher<T> {
 #ifdef LIBC_TYPES_HAS_CFLOAT16
     else if constexpr (cpp::is_complex_type_same<T, cfloat16>())
       return explainErrorComplex<float16>();
-#endif
+#endif // LIBC_TYPES_HAS_CFLOAT16
 #ifdef LIBC_TYPES_HAS_CFLOAT128
     else if constexpr (cpp::is_complex_type_same<T, cfloat128>())
       return explainErrorComplex<float128>();
-#endif
+#endif // LIBC_TYPES_HAS_CFLOAT128
+#endif // LIBC_COMPILER_IS_MSVC
   }
 };