chromatics CGC 7900 C Programmers Manual Mar82 free download

File name CGC_7900_C_Programmers_Manual_Mar82.pdf

C PROGRAMMER'S MANUAL CGC 7900 SERIES COLOR GRAPHICS COMPUTERS Whitesmiths, Ltd. C PROGRAMMERS' MANUAL Release: 2.1 Date: Ma rch 1982 The C language was developed at Bell Laboratories by Dennis Ritchie; Whitesmiths, Ltd. has endeavored to remain as faithful as possible to his language specification. The external specifications of the Idris operating system, and of most of its utilities, are based heavily on those of UNIX, which was also developed at Bell Labora- tories by Dennis Ritchie" and Ken Thompson. Whi tesmi ths, Ltd. grate- fully acknowledges the parentage of many of the concepts we have commercialized, and we thank Western Electric Co. for waiving patent licensing fees for use of the UNIX protection mechanism. The successful implementation of Whi tesmi ths r compilers, operating systems, and utilities, however, is entirely the work of our pro- gramming staff and allied consultants. For the record, UNIX is a trademark of Bell Laboratories; lAS, PDP-11, RSTS/E, RSX-11M, RT-11, VAX, VMS, and nearly every other term with an 11 in it all are trademarks of Digital Equipment Cor- poration; CP/M is a trademark of Digital Research Co.; MC68000 and VERSAdos are trademarks of Motorola Inc.; ISIS is a trademark of In- tel Corporation; A-Natural and Idris are trademarks of Whitesmiths, Ltd. C is not. Copyright (c) 1978, 1979, 1980, 1981 by Whitesmiths, Ltd. C PROGRAMMERS' MANUAL SECTIONS I. The C Languag-e II. Portable C Runtime Library III. C System Interface Library IV. C Machine Interface Library SCOPE This manual describes the C programming language, as implemented by Whitesmiths, Ltd., and the various library routines that make up the machine independent C environment. Section I introduces the C language, and Section II details the numerous functions callable from C to extend the power of the language. Section III lists the functions that interface to a given operating system, while Section IV describes the functions that interface to a given machine archi- tecture. The distinction between Sections II, _III, and IV, while of considerable importance to implementors, is probably academic to most programmers -- all functions in all of these sections are present as described on all systems supported by Whitesmiths, Ltd. For documentation of the programming utilities, or information on each implementation of system or machine dependent features of the C support software, see the C Interface Manual for the appropriate maC?hine. I. The C Language TABLE OF CONTENTS Introduction the C compiler Syntax syntax rules for C Identifiers naming things in C Declarations declaring names in C Initializers giving values to d