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Length: 1187 (0x4a3)
Types: TextFile
Notes: UNIX file
Names: »setbuf.3s«
└─⟦26887b7e0⟧ Bits:30009717 Comet 32 harddisk image
└─⟦28c352965⟧ »/a« UNIX Filesystem
└─⟦this⟧ »usr/man/man3/setbuf.3s«
.ig @(#)setbuf.3s 2.1 7/1/84 @(#)Copyright (C) 1983 by National Semiconductor Corp. .. .TH SETBUF 3S .UC 4 .SH NAME setbuf \- assign buffering to a stream .SH SYNOPSIS .B #include <stdio.h> .PP .B setbuf(stream, buf) .br .SM .B FILE .B *stream; .br .B char *buf; .SH DESCRIPTION .I Setbuf is used after a stream has been opened but before it is read or written. It causes the character array .I buf to be used instead of an automatically allocated buffer. If .I buf is the constant pointer .SM .B NULL, input/output will be completely unbuffered. .PP A manifest constant .SM .B BUFSIZ tells how big an array is needed: .IP .B char buf[BUFSIZ]; .PP A buffer is normally obtained from .IR malloc (3) upon the first .I getc or .IR putc (3) on the file, except that the standard output is line buffered when directed to a terminal. Other output streams directed to terminals and the standard error stream .I stderr are normally not buffered. If the standard output is line buffered, it is flushed each time data is read from the standard input by .IR read (2). .SH "SEE ALSO" fopen(3), getc(3), putc(3), malloc(3) .SH BUGS The standard error stream should be line buffered by default.