id summary reporter owner description type status milestone component version severity resolution keywords cc 13251 Sine / cosine is not thread safe lessig@… John Maddock "For boost::multiprecision::cpp_dec_float_* the sine / cosine functions are not thread safe. System is: Apple LLVM version 9.0.0 (clang-900.0.37) Target: x86_64-apple-darwin16.7.0 Thread model: posix " Bugs closed To Be Determined multiprecision Boost 1.63.0 Showstopper duplicate