Features of the Fortran Compilers

Sun Fortran compilers provide the following features or extensions:

• f77: Global program checking across routines for consistency of arguments, commons, parameters, and the like.

• SPARC only: Support for multiprocessor systems, including automatic and explicit loop parallelization, is integrated tightly with optimization.

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  Note -

  Parallelization features of the Fortran compilers are only available with the Sun Performance WorkShop.

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• f77: Many VAX/VMS Fortran 5.0 extensions, including:

  • NAMELIST

  • DO WHILE

  • Structures, records, unions, maps

  • Variable format expressions

  • Recursion

  • Pointers

  • Double-precision complex

  • SPARC: Quadruple-precision real

  • SPARC: Quadruple-precision complex

• Cray-style parallelization directives, including TASK COMMON, with extensions for f90.

• Global, peephole, and potential parallelization optimizations produce high performance applications. Benchmarks show that optimized applications can run significantly faster when compared to unoptimized code.

• Common calling conventions on Solaris systems permit routines written in C or C++ to be combined with Fortran programs.

• Support for 64-bit Solaris 7 environments on UltraSPARC platforms.

• Fortran 95 features in f90 include the attributes PURE and ELEMENTAL, and enhanced forms of MAXVAL and MINVAL.

• Call-by-value, %VAL, implemented in both f77 and f90.

• Interoperability between Fortran 77 and Fortran 90 programs and object binaries.