XL Fortran Enterprise Edition for AIX : User's Guide - IBM

What’s New for XL Fortran
XL Fortran Version 9.1 provides the following new and changed features:
New or changed compiler options and suboptions:
v The -qflttrap=nanq suboption detects all NaN values handled or generated by
floating point instructions, including those not created by invalid operations.
v The -qport=nullarg suboption treats an empty argument, which is delimited by
a left parenthesis and a comma, two commas, or a comma and a right
parenthesis, as a null argument.
v The -qmodule=mangle81 option provides compatibility with Version 8.1 module
naming conventions for non-intrinsic modules.
v The -qsaveopt option saves the command-line options used for compiling a
source file in the corresponding object file.
v The -qversion option provides the version and release for the invoking compiler.
The following XL Fortran enhancements adapted from the Fortran 2003 draft
standard:
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The 2003std and 2003pure run-time options provide conformance checking of
code for adherence to the draft standard.
The ISO_C_BINDING intrinsic module, BIND attribute and statement, module
variables, common block, subroutine/function and -qalign=bindc compiler
suboption provide support for interoperability with C.
PUBLIC/PRIVATE attribute on derived type components.
The ASSOCIATE construct associates an entity with either a variable or the
value of an expression.
Command-line argument intrinsics:
– COMMAND_ARGUMENT_COUNT
– GET_COMMAND_ARGUMENT
– GET_ENVIRONMENT_VARIABLE
v The FLUSH statement makes data from an external file available to other
processes.
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The IOMSG= specifier on the data-transfer operation, file-positioning, FLUSH,
and file inquiry statements.
The ISO_FORTRAN_ENV intrinsic module provides public entities relating to
the Fortran environment.
The NEW_LINE intrinsic returns a new line character.
The IMPORT statement makes named entities from the host scoping unit
accessible in the interface body by host association.
The PROCEDURE statement declares a dummy procedure or external
procedure.
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