POSIX Library

There are two versions of POSIX bindings provided with FORTRAN 77:

• libFposix, which is just the bindings (-lFposix)

• libFposix_c, which does some runtime checking to make sure you are passing correct handles (-lFposix_c)

If you pass bad handles:

• libFposix_c returns an error code (ENOHANDLE).

• libFposix core dumps with a segmentation fault.

Of course, the checking is time-consuming, and libFposix_c is several times slower.

Both POSIX libraries come in static and dynamic forms.

The POSIX bindings provided are for IEEE Standard 1003.9-1992.

IEEE 1003.9 is a binding of 1003.1-1990 to FORTRAN (X3.8-1978).

For more information, see these POSIX.1 documents:

• ISO/IEC 9945-1:1990

• IEEE Standard 1003.1-1990

• IEEE Order number SH13680

• IEEE CS Catalog number 1019

To find out precisely what POSIX is, you need both the 1003.9 and the POSIX.1 documents.

The POSIX library for f90 is libposix9.