DESCRIPTION

DIGITAL C++ (formerly DEC C++) for the OpenVMS Alpha Operating System is a native programming language product, which generates optimized object code without employing an intermediate translation to C. DIGITAL C++ for OpenVMS Alpha is based on the ANSI/ISO C++ International Standard, reference designation number ISO/IEC 14882:1998. In addition to this standard, C++ supports the ARM, CFRONT, and MS dialects.

DIGITAL C++ includes:

• The DIGITAL C++ Standard Library, which is an implementation of the ANSI/ISO C++ Standard Library. This library is comprised of a suite of header files and the run time code needed to implement the string library, numeric limits, auto pointer, exceptions, complex math, and the STL (Standard Template Library). Portions of this library are implemented using source code licensed from and copyrighted by Rogue Wave Software, Inc.
• The DIGITAL C++ Class Library, which is a set of headers and other files implementing a collection of basic C++ classes that are identical to those provided with previous versions of the compiler. This library is provided to support software developers using DIGITAL C++ Version 6.0 with software developed previously.
• The OpenVMS DEC C Run-Time Library header files and reference manual, which together allow DIGITAL C++ programmers to access the rich functionality of the DEC C Run-Time Library. The OpenVMS DEC C Run-Time Library itself ships with the OpenVMS Alpha operating system.
• Features to facilitate porting between DIGITAL C++ and other implementations of the C++ language. The compiler allows you to choose from several C++ language dialects that have evolved over the past several years:
  • the cfront dialect for compatibility with the AT&T cfront translator
  • the arm dialect for compatibility with The Annotated C++ Reference Manual by Ellis and Stroustrup. Using this dialect minimizes the source changes necessary for applications that compile with DEC C++ V5.6.
  • the ms dialect for maximizing compatibility with Microsoft's Visual C++ product.
  • the standard dialect for developers who want to write applications that comply with the C++ International Standard.
• CXXDEMANGLE, a tool to decode compiler-generated names, that enables other tools (besides the compiler and debugger) to present these decoded names to the user.
• CXXLINK, a facility that lets you link your C++ application by completing the automatic template instantiation process and ensuring that the necessary components are linked into your appplication.
• An OpenVMS debugger enhanced to support the language constructs of DIGITAL C++.

DIGITAL C++ documentation provides comprehensive reference and usage information for all product components. Online help is provided with the software, and HTML documents are provided on the Layered Products CD-ROM Library for the following manuals:

• Using DIGITAL C++ for OpenVMS Alpha
• DIGITAL C++ Installation Guide for OpenVMS Alpha
• DIGITAL C++ Class Library Reference Manual

HTML files are provided for the release notes and some of the product manuals for use with a web browser.

Hardcopy documentation is available by ordering the separate software documentation kit. The hardcopy documentation also includes a copy of an authoritative book on C++, the C++ Programming Language, 3rd edition, by Bjarne Stroustrup.

Features

• Extensive error checking and generation of diagnostics
• Automatic template instantiation including compatibility between version 5.x and 6.x compilers.
• Enhanced debugger support
• Language mode and diagnostic message options increase compatibility with earlier versions.
• Fast compilation and increased code optimization by directly translating C++ source programs to OpenVMS Alpha object files
• Extensive global and local optimizations of generated code for increased performance under OpenVMS
• Option for running only the preprocessor phase of compilation
• Pragmas to control compiler options
• Pragmas to control extern models, sharing of data between concurrent processes, and structure member alignment
• Separate and combined compilation capabilities
• Compiler-generated listing file, including optional:
  • Machine code
  • Macro expansion
  • Compilation statistics
• Data types for numeric, nonnumeric, and systems programming, as follows:
  • 8, 16, 32, and 64-bit [un]signed integers
  • 32, 64, and 128-bit IEEE floating point
  • 32 and 64-bit VAX floating-point
• Integration into the Program Development Environment:
  • Generation of debug and traceback records for OpenVMS Alpha symbolic debugger support
  • Conformity to the OpenVMS Alpha calling standard
  • Access to OpenVMS run-time libraries for general purpose routines and support of multi-language environments
  • Access to the data management facilities of OpenVMS RMS (Record Management Services)
  • Ability to package C++ code as shareable libraries
  • Ability to use additional class libraries.
  • Support for generation of source code analysis information that can be used by the DIGITAL Source Code Analyser.
  • Support for generation of diagnostic information that can be used by the DIGITAL Language-Sensitive Editor.

Run-Time Library for C Applications

The complete DEC C Run-Time Library that is needed for use with DIGITAL C++ is distributed with the OpenVMS Alpha Operating System. The DEC C Run-Time Library provides routines to perform input/output, character and string handling, mathematical computations, memory allocation, and emulation of selected UNIX[R] features. These routines are provided both in shared image and object module library form.

DIGITAL C++ Class Library

The DIGITAL C++ Class Library Run-Time components are distributed with the OpenVMS Alpha Operating Systems. The DIGITAL C++ Class Library provides the following packages: iostream, complex, generic, objection, stopwatch, string, task, message and vector.

Run-Time Library Redistribution

The DIGITAL C++ kit may include Run-Time library components in either shareable image or object library form. DIGITAL grants the user a nonexclusive royalty-free worldwide right to reproduce and distribute these Run-Time Libraries ("the RTLs") provided that the user:

• distributes the RTLs only in conjunction with and as a part of the users's software application product, which is designed to operate in the OpenVMS Alpha environment;
• does not use DIGITAL's name, logo, or trademarks to market the user's software application product;
• includes DIGITAL's copyright notice for DIGITAL C++ on the user's product disk label and/or on the title page of the documentation for the software application product; and
• agrees to indemnify, hold harmless, and defend DIGITAL from and against any claims or lawsuits, including attorney's fees, that arise or result from the use or distribution of the software application product. Except as expressly provided herein, DIGITAL grants no implied or express license under any of its patents, copyrights, trade secrets, trademarks, or any license or other proprietary interests and rights.

For OpenVMS systems, the only RTL components that may be redistributed are LIBCXXSTD.OLB and DECC$CRTL.OLB. Refer to the DIGITAL C++ Version 6.0 Release Notes for instructions on redistributing these RTL components.

HARDWARE REQUIREMENTS

Any Alpha system that is capable of running OpenVMS Alpha Version 6.2 to 7.2. Refer to the OpenVMS Software Product Description (SPD 25.01.xx) for details.

Disk Space Requirements (Block Cluster Size = 1)

Disk space required for compiler kit installation:	145,000 blocks (72.5MB)
Disk space required for use (permanent):	90,000 blocks (45MB)
Disk space required for Debug kit installation:	65,000 blocks (32.5MB)
Disk space required for use (permanent):	13,000 blocks (6.5 MB)

These counts refer to the disk space required on the system disk. The sizes are approximate; actual sizes may vary depending on the user's system environment, configuration, and software options.

SOFTWARE REQUIREMENTS

The following are software requirements:

• DIGITAL C++ for OpenVMS Alpha requires OpenVMS Alpha Version 6.2 to 7.2
• The graphic user interface (GUI) for the debugger shipped with the DIGITAL C++ kit requires Motif Version 1.2-4 or higher.

SOFTWARE LICENSING

This software is furnished only under a license. For more information about DIGITAL's licensing terms and policies, contact your local Compaq sales office or business partner.

LICENSE MANAGEMENT FACILITY SUPPORT

This layered product supports the OpenVMS License Management Facility.

License units for this product are allocated on an Unlimited System Use, plus Personal and Concurrent Use basis.

Each Personal Use license allows one identified individual to use the layered product. Each Concurrent Use license allows any one individual at a time to use the layered product.

For more information on the License Management Facility, refer to the OpenVMS Operating System Software Product Description or the License Management Facility manual of the OpenVMS Operating System documentation set.

CLUSTER ENVIRONMENT

This layered product is fully supported when installed on any valid and licensed OpenVMS Cluster* configuration. The HARDWARE REQUIREMENTS section of this product's Software Product Description detail any special hardware required by this product.

* OpenVMS Cluster configurations are fully described in the OpenVMS Cluster Software Product Description (29.78.xx) and include CI, Ethernet, and Mixed Interconnect configurations.

OpenVMS TAILORING CLASSES

The following OpenVMS classes are required for full functionality of this layered product:

• OpenVMS Required Saveset
• Programming Support
• Utilities

For more information on OpenVMS classes and tailoring, refer to the OpenVMS Operating System Software Product Description (SPD 25.01.xx).

OPTIONAL SOFTWARE

• DECset Release 12.3 for OpenVMS Alpha, which includes:
  • DIGITAL Language-Sensitive Editor/Source Code Analyzer (LSE/SCA) for OpenVMS Alpha
  • DIGITAL Test Manager (DTM) for OpenVMS Alpha
  • DIGITAL Performance and Coverage Analyzer (PCA) for OpenVMS Alpha
  • DIGITAL Code Management System (CMS) for OpenVMS Alpha
  • DIGITAL Module Management System (MMS) for OpenVMS Alpha
  
  For more information on DECset Release 12.3 for OpenVMS Alpha, refer to the Software Product Description (SPD 42.29.xx).

GROWTH CONSIDERATIONS

The minimum hardware/software requirements for any future version of this product may be different from the requirements for the current version.

DISTRIBUTION MEDIA

DIGITAL C++ for OpenVMS Alpha product is available on the OpenVMS Alpha Software Layered Products Library Package (QA-03XAA-H8). The library package includes media and documentation on CD-ROM. A media/documentation kit containing only the DIGITAL C++ for Alpha product is available separately (QA-0HQAA-H8). Included in the kit are CD-ROM media and hardcopy documentation.

YEAR 2000 READY

This product is Year 2000 Ready.

Year 2000 Ready is defined: "Year 2000 Ready" products are defined by DIGITAL as products capable of accurately processing, providing, and/or receiving date data from, into and between the twentieth and the twenty -first centuries, and the years 1999 and 2000, including leap year calculations, when used in accordance with the associated DIGITAL product documentation and provided that all hardware, firmware and software used in combination with such DIGITAL products properly exchange accurate date data with DIGITAL products.

For additional information visit Compaq's DIGITAL Products Year 2000 Ready web site located at http://ww1.digital.com/year2000/warranty.asp.

SOFTWARE WARRANTY

This software is provided by DIGITAL with a 90 day conformance warranty in accordance with the DIGITAL warranty terms applicable to the license purchase.

ORDERING INFORMATION

DIGITAL C++ OpenVMS Alpha Software Licenses:

Personal Use: QL-MJ1AA-2B
Concurrent Use: QL-MJ1AA-3*
Unlimited System Use: QL-0HQA*-AA

Software Media/Documentation: QA-0HQAA-H8
Software Documentation (hardcopy): QA-0HQAA-GZ
Software Product Services: QT-MJ1A*-**, QT-0HQA*-**

* Denotes variant fields. For additional information on available licenses, services, and media, refer to the appropriate price book.

SOFTWARE PRODUCT SERVICES

A variety of service options are available from Compaq. For more information, contact your local Compaq sales office or business partner.

The previous information is valid at time of release. Please contact your local Compaq office for the most up-to-date information.

© 1998,1999 Digital Equipment Corporation, All rights reserved

tm	The DIGITAL Logo, Alpha, DEC, DECset, DECwindows, DIGITAL, OpenVMS, VAX, VAX RMS, and VMS are trademarks of Digital Equipment Corporation. Compaq and the Compaq logo are registered in the U.S. Patent and Trademark Office.)

®	Microsoft is a registered trademark, and Visual C++ is a trademark of Microsoft Corporation.

®	UNIX is a registered trademark in the United States and other countries licensed exclusively through X/Open Company Ltd. All other trademarks and registered trademarks are the property of their respective holders.