AS 3976.1:1991
$72.80
Information processing – Portable Operating System Interface (POSIX) – System Application Program Interface (API) C Language
| Published By | Publication Date | Number of Pages |
| AS | 1991-09-23 | 350 |
Defines a standard operating system interface and environment to support application portability at the source-code level. This Standard is identical with and reproduced from ISO/IEC 9945-1:1990.
Scope
This part of ISO/IEC 9945 defines a standard operating system interface and environment to support application portability at the source-code level. It is intended to be used by both application developers and system implementors.
This part of ISO/IEC 9945 comprises four major components:
(1) Terminology, concepts, and definitions and specifications that govern structures, headers, environment variables, and related requirements
(2) Definitions for system service interfaces and subroutines
(3) Language-specific system services for the C programming language
(4) Interface issues, including portability, error handling, and error recovery
The following areas are outside of the scope of this part of ISO/IEC 9945:
(1) User interface (shell) and associated commands
(2) Networking protocols and system call interfaces to those protocols
(3) Graphics interfaces
(4) Database management system interfaces
(5) Record I/O considerations
(6) Object or binary code portability
(7) System configuration and resource availability
(8) The behavior of system services on systems supporting concurrency within a single process
This part of ISO/IEC 9945 describes the external characteristics and facilities that are of importance to applications developers, rather than the internal construction techniques employed to achieve these capabilities. Special emphasis is placed on those functions and facilities that are needed in a wide variety of commercial applications.
This part of ISO/IEC 9945 has been defined exclusively at the source-code level. The objective is that a Strictly Conforming POSIX.1 Application source program can be translated to execute on a conforming implementation.
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