The C++ interval arithmetic library is compatible with interval arithmetic as implemented in the Fortran compiler.
On x86 platforms, requires support of SSE2 instruction set.
The -xia option is a macro that expands to -fsimple=0 -ftrap=%none -fns=no -library=interval. If you use intervals and override what is set by -xia by specifying a different flag for -fsimple, -ftrap, -fns or -library, you may cause the compiler to exhibit incorrect behavior.
To use the interval arithmetic libraries, include <suninterval.h>.
When you use the interval arithmetic libraries, you must include one of the following libraries: libC, Cstd, or iostreams. See -library for information on including these libraries.
If you use intervals and you specify different values for -fsimple, -ftrap, or -fns, then your program may have incorrect behavior.
C++ interval arithmetic is experimental and evolving. The specifics may change from release to release.