Does FENV_ACCESS pragma exist in C++11 and higher?

Reading a bug report for clang not supporting FENV_ACCESS pragma I've come across a comment:

Setting the rounding mode without using #pragma STDC FENV_ACCESS ON invokes undefined behavior. See C11 7.6.1/2. (This pragma does not exist in C++, so <cfenv> is unusable, but that's not our fault...)

Does this pragma really not exist in C++, rendering <cfenv> unusable? I've tried to search for it in the C++11 standard, but it really isn't mentioned at all. Are pragmas inherited from C along with function prototypes? Or are they actually not needed to avoid UB, since the C++ standard doesn't say anything about behavior being undefined when the pragma is not used (due to not mentioning the pragma at all)?