Lahey Fortran 90

A Better Fortran

You might wonder why you should make the move to Lahey Fortran 90 when your
77 code works just fine. It's simple: Lahey Fortran 90 is a better and
faster Fortran.

Fortran 90 is essentially a superset of FORTRAN 77. This means you can
process 77 code with a 90 language system. In addition, the Fortran 90
Standard contains a rich, new set of language features enabling you to
write tighter, faster, and more portable code in less time. Array
expressions, new program control features (DO/END DO, DO WHILE, CASE),
better array handling, more intrinsic functions, structures, pointers, and
modules are just a few reasons why Fortran will continue to be the
language of choice for engineering and scientific applications.

Not only is Lahey Fortran 90 a better Fortran, it's faster. It's faster
than Lahey's F77L-EM/32. In fact, it's the fastest executing Fortran 90 on
the Pentium.

High Performance Technology

Some of the Fortran 90s currently available are not 90 compilers but merely
language translators: they have to translate your 90 code to C or FORTRAN
77 before it can be compiled. It's a slow, messy way to compile code and
makes debugging difficult. Lahey Fortran 90 compiles directly to object
code for better optimization and debugging.

How can a language system adhering to a new, larger standard be faster?
Lahey's Fortran 90 is the combination of its proprietary automatically
generated front end and Intel Corporation's highly optimized code
generation technology. Using Lahey's "caterpillar" multi-box parser, the
front end is on the leading edge of technology and helps produce the
fastest and most dependable results. The Lahey front end is joined to the
Intel code generator (back end) to provide Lahey Fortran 90 users with a
benefit found in no other language system: it is optimized from the ground
up for the Intel family of processors, especially the Pentium. Lahey's
Fortran 90 incorporates all the common optimizations plus instruction
scheduling, loop unrolling, loop interchange, loop distribution, strip
mining and pre-loading, loop blocking, and alternate loops. Together, the
alliance of Lahey and Intel technology has produced a Fortran 90 that will
please even the most demanding programmers.

Run It Anywhere

Using Phar Lap Software's 386!DOS-Extender, Lahey Fortran 90 is a 32-bit
extended-DOS language system that runs on 386 (with math chip), 486, and
Pentium PCs.

Why extended DOS as the first platform for Fortran 90? Lahey's research has
shown PC Fortran users place a higher priority on the speed of a language
system than on the operating system. By supporting extended DOS Lahey
gives programmers the speed they want along with the ability to write
programs for the largest installed base of users. If you want to work in
Windows or OS/2, Lahey Fortran 90 will run in a Windows DOS box or an OS/2
DOS session. In the future, look for Lahey Fortran 90 on other platforms.

Another benefit of operating under DOS is the field-tested runtime library
found in Lahey Fortran 90. This robust runtime library is already in use
worldwide by tens of thousands of Lahey FORTRAN 77 users.

Features and Tools

The design of Lahey Fortran 90 language system represents more than just
new technology. It is a collection of customer feedback, extensive user
surveys, and the experiences of thousands of users writing applications
with Lahey Fortran. This knowledge is reflected in the features and tools
in Lahey's Fortran 90 language system.

Lahey Fortran 90 is a full implementation of the Fortran 90 Standard. Some
companies give you what they determine are the "important" features. Lahey
delivers the full 90 Standard and lets the customer decide what they want
to use.

Lahey's Fortran 90 comes with an array of tools including Phar Lap's 386 !
DOS-Extender, an editor, a debugger/profiler, a library manager, a make
utility, and video graphics. For programmers doing multi-language
development, Lahey Fortran 90 includes an interface to MetaWare High C.
Developing new programs or moving code to the PC? You will appreciate the
over 700 error messages that are cross-referenced to the comprehensive set
of manuals. To help in your transition to Fortran 90, the Language
Reference manual highlights all 90 features in blue ink.

All Lahey products come with free, unlimited technical support via phone,
fax, E-mail, CompuServe and Lahey's own BBS. Every Lahey product also
includes a 30-day money-back guarantee. Add all this up, and you've got
the most powerful Fortran available for the PC.

To order your copy of Fortran 90 or get your name on Lahey's mailing list,
call (800) 548-4778 or (702) 831-2500

Call About Purchasing Pre-Release
Final Release Begins Shipping Aug. 94

Lahey Fortran 90    -- $895
Upgrade from EM/32  -- $595

System Requirements: 386 (math coproc), 486, Pentium, 8MB RAM

Free Unlimited Technical Support
30-Day Money-Back Guarantee

Lahey Computer Systems Inc
865 Tahoe Blvd.
P.O. Box 6091
Incline Village NV 89450
fax 702-831-8123,  Internet: sales@lahey.com

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