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FORTRAN 77 4.0 User"s Guide
A Sun Microsystems, Inc. Business
Part No.: 802-2997-10
Revision A, November 19952550 Garcia Avenue
Mountain View, CA 94043
U.S.A.
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Ó 1995 Sun Microsystems, Inc. 2550 Garcia Avenue, Mountain View, California 94043-1100 U.S.A.
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and decompilation. No part of this product or document may be reproduced in any form by any means without prior written authorization of
Sun and its licensors, if any.
Portions of this product may be derived from the UNIX system and from the Berkeley 4.3 BSD system, licensed from the University of
California. Third-party software, including font technology in this product, is protected by copyright and licensed from Sun"s Suppliers.
RESTRICTED RIGHTS LEGEND: Use, duplication, or disclosure by the government is subject to restrictions as set forth in subparagraph
(c)(1)(ii) of the Rights in Technical Data and Computer Software clause at DFARS 252.227-7013 and FAR 52.227-19.
The product described in this manual may be protected by one or more U.S. patents, foreign patents, or pending applications.
TRADEMARKS
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implement OPEN LOOK GUI"s and otherwise comply with Sun"s written license agreements. X Window System is a trademark of the X Consortium.
Some of the material in this manual is based on the Bell Laboratories document entitled "A Portable Fortran 77 Compiler," by S. I. Feldman
and P. J. Weinberger, dated August 1, 1978. Material on the I/O Library is derived from the paper entitled "Introduction to the f77 I/O
Library," by David L. Wasley, University of California, Berkeley, California 94720. Further work was done at Sun Microsystems.
THIS PUBLICATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT
NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-
INFRINGEMENT.
THIS PUBLICATION COULD INCLUDE TECHNICAL INACCURACIES OR TYPOGRAPHICAL ERRORS. CHANGES ARE
PERIODICALLY ADDED TO THE INFORMATION HEREIN, THESE CHANGES WILL BE INCORPORATED IN NEW EDITIONS OF THE
PUBLICATION. SUN MICROSYSTEMS, INC. MAY MAKE IMPROVEMENTS AND/OR CHANGES IN THE PRODUCT(S) AND/OR THE
PROGRAMS(S) DESCRIBED IN THIS PUBLICATION AT ANY TIME. iiiFORTRAN 77 User"s Guide
Contents
Preface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxi
1. Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1 Operating Environments. . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.2 Standards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3 Extensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Mixing Languages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Optimization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.4 New Features and Behavior Changes . . . . . . . . . . . . . . . . 4
Features in 4.0 that are New Since 3.0/3.0.1. . . . . . . . . . . . . . 4 Features in 3.0.1 that are New Since 3.0.. . . . . . . . . . . . . . . . . 6 Features in 3.0 that are New Since 2.0/2.0.1. . . . . . . . . . . . . . 7 Differences for FORTRAN in Solaris 2.x/1.x /x86 . . . . . . . . . 9 Behavior Changes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 ivFORTRAN 77 User"s Guide
1.5 Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
FORTRAN 77 3.0/3.0.1 to 4.0 . . . . . . . . . . . . . . . . . . . . . . . . . . 15 BCP: Running Applications from Solaris 1.x in 2.x . . . . . . . . 15 Application Development in Solaris 2.x for 1.x . . . . . . . . . . . 16
1.6 Text Editing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
1.7 Program Development. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
1.8 Debugging. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
1.9 Performance Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
1.10 Licensing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2. The Compiler. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.1 Uses of the Compiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.2 A Quick Start. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Usingf77 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Compiling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Running . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Renaming the Executables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
2.3 Compile Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Command-line Syntax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Compile-Link Sequence. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Command-Line File Names. . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Language Preprocessor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Separate Compiling and Linking . . . . . . . . . . . . . . . . . . . . . . . 25 Consistent Compiling and Linking . . . . . . . . . . . . . . . . . . . . . 26 Unrecognized Arguments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Contentsv
2.4 Option Syntax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
2.5 Most Useful Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
2.6 Actions Summary (Actions and Options Sorted by Action) 28
Debugging Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Floating-point Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Library Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Licensing Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Performance Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Parallelization Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Profiling Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Alignment Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Backward Compatibility and Legacy Options . . . . . . . . . . . . 32 Miscellaneous Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
2.7 Options Summary (Options and Actions Sorted by Option)34
2.8 Options Details (Options and Actions Sorted by Option) 39
2.9 Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
General Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 Parallel Directives. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
2.10 Native Language Support . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Locale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 Compile-Time Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . 97 Localizing and Installing the Files . . . . . . . . . . . . . . . . . . . . . . 97 Using the File After Installation . . . . . . . . . . . . . . . . . . . . . . . . 99
2.11 Miscellaneous Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
viFORTRAN 77 User"s Guide Floating-Point Hardware Type . . . . . . . . . . . . . . . . . . . . . . . . . 99 Many Options on Short Commands. . . . . . . . . . . . . . . . . . . . . 99 Align Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 Optimizer Out of Memory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102 BCP Mode: How to Make 1.x Applications Under 2.x. . . . . . 105
3. File System and FORTRAN 77 I/O. . . . . . . . . . . . . . . . . . . . . . . 109
3.1 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
3.2 Directories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
3.3 File Names. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
3.4 Path Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Relative Path Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112 Absolute Path Names. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
3.5 Redirection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114 Output/Truncate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114 Output/Append . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
3.6 Piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
4. Disk and Tape Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
4.1 File Access from FORTRAN 77 Programs. . . . . . . . . . . . . 117
Accessing Named Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117 Accessing Unnamed Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120 Passing File Names to Programs. . . . . . . . . . . . . . . . . . . . . . . . 120 Direct I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124 Internal Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Contentsvii
4.2 Tape I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
UsingTOPEN for Tape I/O. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 FORTRAN 77 Formatted I/O for Tape. . . . . . . . . . . . . . . . . . . 128 FORTRAN 77 Unformatted I/O for Tape . . . . . . . . . . . . . . . . 128 Tape File Representation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129 End-of-File. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130 Access on Multiple-File Tapes. . . . . . . . . . . . . . . . . . . . . . . . . . 130
5. Program Development. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
5.1 Simple Program Builds . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Scripts or Aliases. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131 Limitations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
5.2 Program Builds with themake Program. . . . . . . . . . . . . . 132
Themakefile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132 make. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134 The C Preprocessor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134 Macros withmake. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136 Overriding of Macro Values . . . . . . . . . . . . . . . . . . . . . . . . . . . 136 Suffix Rules inmake. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
5.3 Change Tracking and Control with SCCS . . . . . . . . . . . . . 138
Putting Files under SCCS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138 Making the SCCS Directory. . . . . . . . . . . . . . . . . . . . . . . . . . . . 138 Inserting SCCS ID Keywords . . . . . . . . . . . . . . . . . . . . . . . . . . 139 Creating SCCS Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140 Checking Files Out and In. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144 viiiFORTRAN 77 User"s Guide
6. Libraries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
6.1 Libraries in General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
Advantages of Libraries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146 Debug Aids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146 Consistent Compile and Link . . . . . . . . . . . . . . . . . . . . . . . . . . 147 Fast Directory Cache for the Link-editor . . . . . . . . . . . . . . . . . 147
6.2 Library Search Paths and Order . . . . . . . . . . . . . . . . . . . . . 149
Order of Paths Critical for Compile (Solaris 1.x) . . . . . . . . . . 149 Error:Library not Found . . . . . . . . . . . . . . . . . . . . . . . . . . 150 Search Order for Library Search Paths. . . . . . . . . . . . . . . . . . . 151quotesdbs_dbs3.pdfusesText_6