CxxUtils, etc: Add trapping_fp.h.
Add a macro to tell the compiler to optimize the current block assuming that FP operations may trap.
Mostly for clang, to prevent it from auto-vectorizing in places where that can cause spurious FPEs.
Add a macro to tell the compiler to optimize the current block assuming that FP operations may trap.
Mostly for clang, to prevent it from auto-vectorizing in places where that can cause spurious FPEs.