Multiple C++ compilers provide several types of floating point math dialects. The most famous of these is so-called fast math, which sometimes violates the IEEE754 specification, but at the cost of improved runtime operations.

Targets

Dialects::Math::Precise

This dialect of floating point math operations is the default set of rules.

NOTE

Due to limitations with the command line interface, this target can only be used with Clang and MSVC. GCC does not currently provide an interface for this feature.

Dialects::Math::Strict

This dialect of floating point math operations enables strict rules regarding the IEEE754 specification, and typically raises floating point exceptions as soon as they occur.

NOTE

This target has no effect on targets that use GCC.

Dialects::Math::Fast

This dialect of floating point math turns on fast math optimizations for a given target.

To keep behavior equivalent across all major compilers, the __FAST_MATH__ macro is defined when using this target.

NOTE

It is safe to link against this target even if you are not using C++, as it currently only affects C++ source files.