[llvm-bugs] [Bug 42798] New: FP_ constants not defined when offloading is turned on

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=42798

            Bug ID: 42798
           Summary: FP_ constants not defined when offloading is turned on
           Product: OpenMP
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Clang Compiler Support
          Assignee: unassignedclangbugs at nondot.org
          Reporter: xw111luoye at gmail.com
                CC: llvm-bugs at lists.llvm.org

The following constants are not defined when offload flag is added.
FP_NORMAL, FP_SUBNORMAL, FP_ZERO, FP_INFINITE, FP_NAN
https://zh.cppreference.com/w/cpp/numeric/math/FP_categories

clang++ -fopenmp -fopenmp-targets=nvptx64-nvidia-cuda test.cpp

#include <cmath>

int main()
{
  double a(0);
  return (std::fpclassify(a) != FP_ZERO);
}

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