HP C for OpenVMS

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Product

Description

PRODUCT NAME: HP C for OpenVMS

SPD 25.38.38

DESCRIPTION

This document addresses HP C Version 7.2 for Open-

VMS for Integrity Servers (I64), HP C Version 7.1 for

OpenVMS Alpha, and HP C Version 6.4 for OpenVMS

VAX.

HP C (formerly Compaq C) is a standard conforming im-

plementation of the C programming language with HP

extensions. The HP C compiler runs under the Open-

VMS VAX, Alpha, and I64 Operating Systems and gen-

erates optimized and position-independent code.

HP C is a native-mode language product, and is inte-

grated into the Common Language Environments. All

OpenVMS system services are available to programs

written in HP C. HP C programs can invoke, as func-

tions, modules written in other languages.

HP C supports Record Management Services (RMS)

for sequential ﬁle organizations and associated access

methods. HP C also supports stream ﬁle-access meth-

ods common among many C implementations.

HP C provides extensive standard-conformance check-

ing, as well as many optional code-quality and portability

diagnostics, and supports the lint-like features of the HP

Source Code Analyzer. The HP Source Code Analyzer

allows the programmer to check for consistent function

usage throughout a program environment. HP C also

generates complete debug and traceback records for

use with OpenVMS Debug. Debug allows the C pro-

grammer to set breakpoints, examine and modify the

contents of user variables, and selectively halt or con-

tinue program execution.

HP C on OpenVMS (Alpha and I64, not VAX) provides

IEEE ﬂoating-point support as deﬁned by, and in con-

formance with, the IEEE 754 Standard.

Features

• Limited support for installing more than one version

of HP C on the same node, and allowing users to

select which version to use on a per-process basis

(not on OpenVMS I64, which uses PCSI-based kits).

• Separate modes of compilation to support each of

six C dialects:

— A strict ANSI89 mode that compiles according

to the original ANSI C standard (ANSI/ISO/IEC

9899:1990).

— For OpenVMS Alpha and OpenVMS I64, a strict

C99 mode that compiles nearly in accordance with

the 1999 version of the C standard (ANSI/ISO/IEC

9899:1999), except that the support is not com-

plete and has not been fully veriﬁed against con-

formance suites. This mode may be useful as

a preview of what will be considered conforming

source code under the new standard, but should

not be relied upon for production use until a fu-

ture release of both HP C and the HP C Run-

Time Library for OpenVMS containing complete

C99 support. For OpenVMS VAX, this mode is

not supported, and is treated as a synonym for

relaxed ANSI mode.

— A relaxed ANSI mode that compiles according to

the latest standard supported by the compiler, but

also accepts those HP extensions that do not di-

rectly conﬂict with the semantics of standard C.

— A VAX C mode that supports VAX C extensions

— A common mode that supports many common us-

age C constructs as implemented on UNIX sys-

tems including Tru64 UNIX (also called "K&R" C

or "pcc" mode)

August 2006

Summary of content (6 pages)

PAGE 1
Software Product Description PRODUCT NAME: HP C for OpenVMS SPD 25.38.38 DESCRIPTION Features This document addresses HP C Version 7.2 for OpenVMS for Integrity Servers (I64), HP C Version 7.1 for OpenVMS Alpha, and HP C Version 6.4 for OpenVMS VAX. • Limited support for installing more than one version of HP C on the same node, and allowing users to select which version to use on a per-process basis (not on OpenVMS I64, which uses PCSI-based kits).
PAGE 2
HP C for OpenVMS — A Microsoft compatibility mode that interprets source programs according to certain language rules followed by the C compiler provided with the Microsoft Visual C++ compiler product. — HP C OpenVMS Alpha and OpenVMS I64, on OpenVMS Version 7.0 and later, supports usercontrolled features to specify the use of 64-bit pointers that allow applications to exploit the increased address space capabilities of the Alpha and I64 architectures and the OpenVMS Alpha Version 7.0 services.
PAGE 3
HP C for OpenVMS — control optional messages using a single numeric "importance level" • Extensive control over optimization behavior • Interface to the curses screen-manipulation package — control optional messages using functional groups • Installation kit cooperates with HP C++.
PAGE 4
HP C for OpenVMS — the title or copyright page of the documentation for the software application product The minimum supported memory for this application running in a standalone DECwindows environment with both the client and server executing on that same system is 8 Mbytes. • agrees to indemnify, hold harmless, and defend HP 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.
PAGE 5
HP C for OpenVMS License units for Alpha and VAX HP C are allocated on a Capacity Use, Personal and Concurrent Use basis. License units for I64 HP C are allocated on Concurrent Use basis. — Code Management System (CMS) for OpenVMS Systems 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 HP DECset Release 12.
PAGE 6
HP C for OpenVMS ORDERING INFORMATION For more information on the Operating Environments, please see the HP Operating Environments for OpenVMS I64 SPD: 82.34.** When purchasing HP C both a license and media must be ordered. The license deliverable provides the LMF PAK required to run the HP C software. The VMS Operating System or Operating Environment (license and media) is a prerequisite to running HP C. * Denotes variant fields.