Before You Begin |
This manual documents the intrinsic INTERVAL data types in the Sun Studio Fortran 95 compiler (f95).
This is a reference manual intended for programmers with a working knowledge of the Fortran language, the Solaris operating environment, and UNIX commands.
This book contains the following two chapters:
Chapter 1 describes the goals for intrinsic interval support in f95 and provides code samples that interval programmers can use to quickly learn more about the interval features in f95. This chapter contains the essential information to get started writing interval code using f95.
Chapter 2 is a complete description of the interval language extensions to f95.
"Glossary," contains definitions of interval terms.
This book is not an introduction to intervals and does not contain derivations of the interval innovations included in f95. For a list of sources containing introductory interval information, see the Interval Arithmetic Readme.
The interval literature is large and growing. Interval applications exist in various substantive fields. However, most interval books and journal articles either contain new interval algorithms, or are written for interval analysts who are developing new interval algorithms. There is not yet a book titled "Introduction to Intervals."
The Sun Studio f95 compiler is not the only source of support for intervals. Readers interested in other well known sources can refer to the following books:
For a list of technical reports that establish the foundation for the interval innovations implemented in f95, see Section 2.11, References. See the Interval Arithmetic Readme for the location of the online versions of these references.
Additional interval information is available at various web sites and by subscribing to email lists. For a list of online resources, refer to the Interval Arithmetic Readme.
A detailed bibliography and interval FAQ can be obtained online at the URLs listed in the Interval Arithmetic Readme.
To discuss interval arithmetic issues or ask questions regarding the use of interval arithmetic, a mailing list has been constructed. Anyone can send questions to this list. Refer to the Interval Arithmetic Readme for instructions on how to subscribe to this mailing list.
To report a suspected interval error, send email to
Include the following text in the Subject line of the email message:
FORTEDEV "7.0 mm/dd/yy" Interval
where mm/dd/yy is the month, day, and year.
All code examples in this book are contained in the following directory:
/opt/SUNWspro/examples/intervalmath/docExamples
The name of each file is cen-m.f95, where n is the chapter in which the example occurs and m is the number of the example. Additional interval examples can be found in the following directory:
/opt/SUNWspro/examples/intervalmath/general
The "pipe" or "bar" symbol separates arguments, only one of which may be chosen. |
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The colon, like the comma, is sometimes used to separate arguments. |
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The compilers and tools and their man pages are not installed into the standard /usr/bin/ and /usr/share/man directories. To access the compilers and tools, you must have your PATH environment variable set correctly (see Accessing the Compilers and Tools). To access the man pages, you must have the your MANPATH environment variable set correctly (see Accessing the Man Pages.).
For more information about the PATH variable, see the csh(1), sh(1), and ksh(1) man pages. For more information about the MANPATH variable, see the man(1) man page. For more information about setting your PATH variable and MANPATH variables to access this release, see the installation guide or your system administrator.
Use the steps below to determine whether you need to change your PATH variable to access the compilers and tools.
To Determine Whether You Need to Set Your PATH Environment Variable |
1. Display the current value of the PATH variable by typing the following at a command prompt.
2. Review the output to find a string of paths that contain /opt/SUNWspro/bin/.
If you find the path, your PATH variable is already set to access the compilers and tools. If you do not find the path, set your PATH environment variable by following the instructions in the next procedure.
To Set Your PATH Environment Variable to Enable Access to the Compilers and Tools |
1. If you are using the C shell, edit your home .cshrc file. If you are using the Bourne shell or Korn shell, edit your home .profile file.
2. Add the following to your PATH environment variable. If you have Sun ONE Studio software or Forte Developer software installed, add the following path before the paths to those installations.
Use the following steps to determine whether you need to change your MANPATH variable to access the man pages.
To Determine Whether You Need to Set Your MANPATH Environment Variable |
1. Request the dbx man page by typing the following at a command prompt.
If the dbx(1) man page cannot be found or if the man page displayed is not for the current version of the software installed, follow the instructions in the next procedure for setting your MANPATH environment variable.
To Set Your MANPATH Environment Variable to Enable Access to the Man Pages |
1. If you are using the C shell, edit your home .cshrc file. If you are using the Bourne shell or Korn shell, edit your home .profile file.
2. Add the following to your MANPATH environment variable.
The Sun Studio 8 integrated development environment (IDE) provides modules for creating, editing, building, debugging, and analyzing the performance of a C, C++, or Fortran application.
The IDE requires the Core Platform component of Sun Studio 8. You must set the SPRO_NETBEANS_HOME environment variable to the location where the Core Platform component is installed or mounted (installation_directory/netbeans/3.5R) if the Core Platform component is not installed or mounted to one of the following locations:
The command to start the IDE is sunstudio. For details on this command, see the sunstudio(1) man page.
You can access the documentation at the following locations:
If your software is not installed in the /opt directory, ask your system administrator for the equivalent path on your system.
The docs.sun.com web site (http://docs.sun.com) enables you to read, print, and buy Sun Microsystems manuals through the Internet. If you cannot find a manual, see the documentation index that is installed with the software on your local system or network.
The documentation is provided in accessible formats that are readable by assistive technologies for users with disabilities. You can find accessible versions of documentation as described in the following table. If your software is not installed in the /opt directory, ask your system administrator for the equivalent path on your system.
HTML at http://docs.sun.com |
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HTML in the installed software through the documentation index at file:/opt/SUNWspro/docs/index.html |
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HTML in the installed software through the documentation index at file:/opt/SUNWspro/docs/index.html |
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HTML at http://docs.sun.com |
The following table describes related documentation that is available at file:/opt/SUNWspro/docs/index.html and http://docs.sun.com. If your software is not installed in the /opt directory, ask your system administrator for the equivalent path on your system.
Describes issues regarding the numerical accuracy of floating-point computations. |
The following table describes related documentation that is available through the docs.sun.com web site.
Visit http://developers.sun.com/prodtech/cc to find these frequently updated resources:
You can find additional resources for developers at http://developers.sun.com.
If you have technical questions about this product that are not answered in this document, go to:
http://www.sun.com/service/contacting
Sun is interested in improving its documentation and welcomes your comments and suggestions. Email your comments to Sun at this address:
Please include the part number (817-5076-10) of your document in the subject line of your email.
Copyright © 2004, Sun Microsystems, Inc. All rights reserved.