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Lahey Computer Systems, Inc.Fujitsu Ltd.

LF Fortran Express v7.3


Full Fortran 77, 90, and 95 (32-bit).   Compatible with Windows 8/7 (32 and 64-bit) and more.

LF95 Express includes the powerful Lahey/Fujitsu Fortran 95 optimizing command-line compiler, linker, comman-line debugger, librarian, support for creating DLLs and calling the Windows APIs, online documentation, and free e-mail support.

LF Fortran 95 Optimizations.


Basic Optimization
  • Constant folding
  • Common subexpression elimination
  • Copy propagation
  • Strength Reduction
  • Algebraic simplifications
  • Dead code elimination
  • Peephole optimization
  • Loop invariant code motion
  • Transform array element to simple variable
  • Local Instruction scheduling
  • Address calculation optimization
  • Array optimization
Program Reconstruction Optimizations
  • Loop unrolling
  • Loop interchange
Procedure Optimization
  • Inlining mathematical functions
  • Stack optimization
  • Inline user-defined
Others
  • Pentium/Pentium PRO/Pentium 4 instruction
  • Using fast input/output libraries
  • Prefetch Pentium III / Athlon
  • SSE2 instruction optimizations
  • Enable flush-to-zero mode for SSE2

Statically Link Fujitsu C and Borland C++ Object Files.


LF Fortran 95 supports static linking with Fujitsu C and Borland C++ Object Files. Combine your Fortran and C/C++ code into one executable. For the routines you don't want to develop yourself, you can also link with C/C++ routines from commercially available libraries. 

DLL Interfaces to Visual Basic, VC++, Borland C++, Delphi, Microsoft .NET languages.


Create 32-bit Windows DLLs from your Fortran routines and call the Fortran routines from 32-bit Windows programs created with Microsoft Visual Basic, Microsoft Visual C++, Borland C++, Borland Delphi, and Microsoft .NET languages. 

Win32 API Access.


LF Fortran 95 supports direct calls from Fortran to functions in the Win32 API. For a narrow range of applications, this might be the last little bit of glue you need to pull off your project. Note that this is not for the faint-hearted! You'll need to be a Windows programmer to get all but the most basic functionality. That's because the API was written to be called from C. And consequently, arguments need to be passed as C expects them. Structures and callback routines pose additional problems. Clearly, this would be a difficult way to build a Windows application from scratch.

Legacy Fortran Support.


LF Fortran 95 extends its language support in other directions adding many legacy Fortran features, including VAX structures and the various UNIX service routines. These features further facilitate your move to cost/performance efficiency on the PC platform:
  • Unlimited number of continuation lines in free or fixed source form 
  • DO UNTIL statement 
  • FIND statement 
  • STRUCTURE and END STRUCTURE statements 
  • UNION and END UNION statements 
  • MAP and END MAP statements 
  • RECORD statement 
  • Non-standard POINTER statement 
  • AUTOMATIC statement 
  • STATIC statement 
  • VALUE statement 
  • BYTE statement 
  • Hollerith constants 
  • Alternative forms of binary, octal, and hexadecimal constants 
  • Binary, octal, or hexadecimal constants in a DATA, declaration statement 
  • Period structure component separator 
  • IMPLICIT UNDEFINED statement 
  • Namelist input/output on internal file 
  • FORM = 'BINARY' 
  • TOTALREC specifier 
  • STATUS = 'SHR' 
  • Gw, $, \, and R edit descriptors 
  • LOC intrinsic function 
  • The following service subroutines: ABORT, BEEP, BIC, BIS, CLOCK, CLOCKM, DATE, EXIT, ERRSAV, ERRSTR, ERRSET, ERRTRA, FDATE, FREE,GETARG, GETDAT, GETLOG, GETPARM, GETTIM, GMTIME, IBTOD, IDATE, IETOM, ITIME, IVALUE, LTIME, MTOIE, PERROR, PRNSET, QSORT, SETRCD, SETBIT, SIGNAL, SLEEP 
  • The following service functions: ACCESS, ALARM, BIT, CHDIR, CHMOD, CTIME, DRAND, DTIME, ETIME, FGETC, FPUTC, FSEEK, FSTAT, FTELL, GETC, GETCWD, GETFD, GETPID, HOSTNM, IARGC, IERRNO, INMAX, IOINIT, IRAND, JDATE, KILL, LNBLNK, LONG, LSTAT, MALLOC, NARGS, PUTC, RAN, RAND, RENAME, RINDEX, RTC, SECOND, SECNDS, SETDAT, SETTIM, SHORT, STAT, TIME, TIMEF, UNLINK 

ANSI/ISO-Compliant Fortran 95.


LF Fortran 95 is a complete implementation of the ANSI/ISO Fortran 95 standard. Fortran 95 offers some small but important improvements over Fortran 90, including the ability to create your own elemental procedures, default initialization for structure components, the NULL intrinsic for initializing pointers, the FORALL construct, and a standard CPU_TIME intrinsic procedure. 

IEEE Standard 754 support
IEEE Standard 754 defines the representation and behavior of 32- and 64-bit floating point numbers. IEEE 754 support provides for consistency of basic computational results among platforms that use IEEE 754. A heavy-duty online discussion of floating point numbers and the standard is provided by David Goldberg at http://docs.sun.com/source/806-3568/index.html.




LF Fortran 95 System Requirements

Hardware

  • 1 GHz or higher, Intel or AMD processor (Pentium III or better)
  • 1 GB or more RAM
  • 1024x600 display

Operating System

LF Fortran Express v7.3 can be installed onto any of the following systems:
  • Windows 8 (32 and 64 bit)
  • Windows 7 (32 and 64 bit)
  • Windows Vista (32 and 64 bit) with Service Pack 2 (SP2) - all editions except Starter Edition
  • Windows XP with Service Pack 3 (SP3)
  • Windows Server 2008 R2 (x64)
  • Windows Server 2008 (32 and 64 bit) with Service Pack 2 (SP2)
  • Windows Server 2003 R2 (x64)
  • Windows Server 2003 (32 and 64 bit) with Service Pack 2 (SP2)

Target Operating System

LF Fortran 95 applications are compatible with Microsoft Windows 8, 7, Vista, XP, 2000, NT 4.0, Me, 98, and 95.