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[flang-rt] Set HAVE_LDBL_MANT_DIG_113. #130836

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Merged
merged 1 commit into from
Mar 11, 2025
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[flang-rt] Set HAVE_LDBL_MANT_DIG_113. #130836

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10 changes: 9 additions & 1 deletion flang-rt/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -223,7 +223,6 @@ check_cxx_source_compiles(
"
HAVE_DECL_STRERROR_S)


# Search for clang_rt.builtins library. Need in addition to msvcrt.
if (WIN32)
find_compiler_rt_library(builtins FLANG_RT_BUILTINS_LIBRARY)
Expand Down Expand Up @@ -294,6 +293,15 @@ elseif (FLANG_RT_GCC_RESOURCE_DIR)
endif ()
endif ()

# Check if 128-bit float computations can be done via long double.
check_cxx_source_compiles(
"#include <cfloat>
#if LDBL_MANT_DIG != 113
#error LDBL_MANT_DIG != 113
#endif
int main() { return 0; }
"
HAVE_LDBL_MANT_DIG_113)


#####################
Expand Down