Library files provide an easy way for programs to share commonly used subroutines. Fortran libraries that have both static (.a) and dynamic (.so) versions are:
libfsu, libfui, libfai, libfai2, libfsumai, libfprodai, libfminlai, libfmaxlai, libminvai, libmaxvai, libifai, libf77compat
This book describes the intrinsic functions and routines in the Sun Studio Fortran libraries. It is intended for scientists, engineers, and programmers who have a working knowledge of the Fortran language. Discussion of Fortran programming issues on Solaris operating environments, including input/output, application development, library creation and use, program analysis, porting, optimization, and parallelization can be found in the companion
Fortran Programming Guide
Support for intrinsic INTERVAL data types is a feature in the Sun Studio Fortran 95 compiler. Two compiler flags, -xia and -xinterval, tell the compiler to recognize interval-specific language extensions and to generate executable interval code.