The Flang compiler does not conform to IEEE-754 specifications when
-Ofast or -ffast-math options are specified.
The compiler will enable a range of optimizations that provide faster mathematical
operations under -Ofast and -ffast-math mode of
compilation.Note: AOCC Flang extends the GitHub version
(https://github.com/flang-compiler/flang.git) with enhancements and stability.