Compaq Visual Fortran
Programmer's Guide
Compaq Computer Corporation
Houston, Texas
Date: August, 2001
Software
Version:
Visual Fortran Version 6.6
Operating
Systems:
Microsoft Windows 98, Windows Me, Windows 95,
Windows 2000, or Windows NT Version 4
Copyright Information
Confidential computer software. Valid license from Compaq required for possession, use
or copying. Consistent with FAR 12.211 and 12.212, Commercial Computer Software,
Computer Software Documentation, and Technical Data for Commercial Items are
licensed to the U.S. Government under vendor's standard commercial license.
Compaq shall not be liable for technical or editorial errors or omissions contained herein.
The information in this document is provided "as is" without warranty of any kind and is
subject to change without notice. The warranties for Compaq products are set forth in the
express limited warranty statements accompanying such products. Nothing herein should
be construed as constituting an additional warranty.
© 2001 Compaq Computer Corporation
Visual Fortran Home Page, Photographic images: Copyright © 1997 PhotoDisc, Inc.
Visual Fortran Home Page, Image: CERN, European Laboratory for Particle Physics:
ALICE detector on CERN's future accelerator, the LHC, Large Hadron Collider.
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New Features for Compaq Visual Fortran Version 6.6 Page 1 of 2
New Features for Compaq Visual Fortran Version 6.6
New features added to Compaq Visual Fortran (Visual Fortran) Version 6.6
(since Visual Fortran Version 6.5 and 6.5A) include the following:
l Support has been added for 8-byte integer and 8-byte logical intrinsic data
types.
l The Windows API interface header files DFWINTY.F90 and DFWIN.F90 (and
its component files) have been extensively revised to work in both a 32-bit
and a 64-bit environment.
l A new version of the Compaq Extended Math Library (CXML) is included
with Visual Fortran Version 6.6. CXML Version 5.0 includes improved
performance for many CXML routines, a new set of routines for solving
sparse matrix problems using direct methods, sample files that show how
to invoke the direct sparse solver routines from Fortran and C, changes to
certain sparse iterative solver functions, changes in how messages can be
printed with the iterative solver functions (including changes to the
argument iounit), and other changes. The skyline solver routines are no
longer supported. The auxiliary LAPACK routine XLAENV is no longer
supplied by CXML; instead, the LAPACK routines DLAMCH and SLAMCH
have been modified to return compile-time constants instead of computing
values on each call.
l The types of Visual Fortran run-time libraries displayed in the visual
development environment Fortran tab (Project menu, Settings dialog box)
more closely match the run-time libraries available in Visual C++ (C/C++
tab). Also, the types of run-time libraries linked against while linking
against debug versionsof DLL libraries have changed, as described in Visual
Fortran/Visual C++ Mixed-Language Programs and Specifying Consistent
Library Types.
l The following new graphics functions let you draw Bezier curves (based on
fitting a cubic curve to four points):
l POLYBEZIER and POLYBEZIER_W
l POLYBEZIERTO and POLYBEZIERTO_W
l The following compiler options have changed or have been added:
l /annotations now provides information about optimizations in a listing
file.
l /architecture and /tune options now support the pn4 keyword for
Pentium 4 systems. In addition, the pn1, pn2, and pn3 keywords have
been added (pn is an abbreviation for Pentium) as the preferred
New Features for Compaq Visual Fortran Version 6.6 Page 2 of 2
keywords in place of p5, p6, and p6p.
l The /ccdefault:default option now allows other options, such as /vms,
to set the default carriage control.
l The keyword /fpscomp:ldio_spacing, for list-directed output, controls
whether a blank is inserted at run-time after a numeric value before a
character value. This option is set by /fpscomp:general.
l /integer_size now supports a value of 64 to allow INTEGER and
LOGICAL declarations to be treated as 8 bytes long (KIND=8).
l Specifying the /stand option (without keywords) now sets /stand:f95
(Fortran 95 standards checking) instead of /stand:f90 (Fortran 90
standards checking).
l If you specify /fast with /stand, /align:dcommons and /align:sequence
(usually set by /fast) are not set.
l A derived-type variable that is data initialized via default initialization of
any of its components will no longer be saved by default. A RECORD
variable that is data initialized via default initialization specified in its
STRUCTURE declaration will no longer be saved by default.
l The Fortran preprocessor fpp supports the macros __DATE__ and
__FILE__. When you request that fpp expand macros using "-fpp:-m",
these expand into character literals that give the name of the source file
being processed and the current date/time respectively.
l For additional new features and details, see the online release notes
(relnotes.txt or relnotes.htm).
l New or significantly revised sections in the Programmer's Guide include
Copying Projects and Viewing Fortran Data Types in the Debugger.
Beginning with Version 6.6, Visual Fortran no longer supports Windows NT Alpha
systems.
Changes to Compaq Array Visualizer are described separately in the Array
Visualizer HTML Help documentation.
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