LF Fortran Express User's Guide - Lahey Computer Systems, Inc.

Contents
75
Calling LF Fortran DLLs from Microsoft C#
75
Calling LF Fortran DLLs from Microsoft Visual
Basic .NET......................................... 76
Calling LF Fortran DLLs from Microsoft Visual
C++ .NET .......................................... 77
Calling the Windows API.............................. 78
Calling assembly language procedures ......... 81
LF Fortran Conventions ............................ 81
Passing Arguments to Subroutines ........... 82
Returning Values from Functions ............. 90
Command-Line Debugging with FDB. 95
Starting FDB.................................................. 95
Commands..................................................... 95
Executing and Terminating a Program ..... 95
Shell Commands ....................................... 96
Breakpoints ............................................... 96
Controlling Program Execution ................ 99
Displaying Program Stack Information .. 100
Setting and Displaying Program Variables...
101
Source File Display................................. 102
Automatic Display .................................. 104
Symbols................................................... 104
Scripts...................................................... 104
Signals..................................................... 105
Miscellaneous Controls........................... 105
Files......................................................... 105
Fortran 95 Specific.................................. 106
Communicating with fdb ........................ 106
Library Manager ................................. 109
Options ........................................................ 109
Response Files............................................. 111
Creating and maintaining COFF libraries ... 111
Extracting object files from libraries........... 112
Creating import libraries ............................. 112
Utility Programs.................................. 115
DUMPBIN.EXE.......................................... 115
Invoking DUMPBIN............................... 115
DUMPBIN Options................................. 115
ii LF Fortran Express User’s Guide
EDITBIN.EXE.............................................117
Invoking EDITBIN..................................117
EDITBIN Options....................................117
HDRSTRIP.F90...........................................119
LFSPLIT.EXE .............................................120
MAKEDEF.EXE .........................................120
SEQUNF.F90...............................................120
TRYBLK.F90 ..............................................120
UNFSEQ.F90...............................................120
WHERE.EXE...............................................121
Invoking WHERE....................................121
Programming Hints ............................123
Efficiency Considerations............................123
Side Effects ..................................................123
File Formats .................................................124
Formatted Sequential File Format ...........124
Unformatted Sequential File Format .......124
Direct File Format ...................................125
Transparent File Format ..........................125
Determine Load Image Size.........................125
Link Time.....................................................125
Year 2000 compliance .................................126
Limits of Operation......................................127
Runtime Options.................................129
Command Format ........................................129
Command Environment Variable ................129
Execution Return Values .............................130
Standard Input and Output...........................131
Runtime Options ..........................................131
Description of Options.............................131
Environment Variables for Input/Output.....136