xref: /onnv-gate/usr/src/lib/libbc/libc/gen/sys5/sgetl.c (revision 0:68f95e015346)
1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate  * CDDL HEADER START
3*0Sstevel@tonic-gate  *
4*0Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*0Sstevel@tonic-gate  * with the License.
8*0Sstevel@tonic-gate  *
9*0Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate  * and limitations under the License.
13*0Sstevel@tonic-gate  *
14*0Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate  *
20*0Sstevel@tonic-gate  * CDDL HEADER END
21*0Sstevel@tonic-gate  */
22*0Sstevel@tonic-gate /*      Copyright (c) 1984 AT&T */
23*0Sstevel@tonic-gate /*        All Rights Reserved   */
24*0Sstevel@tonic-gate 
25*0Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
26*0Sstevel@tonic-gate /*
27*0Sstevel@tonic-gate  * Provide machine independent transfer of longs.
28*0Sstevel@tonic-gate  */
29*0Sstevel@tonic-gate 
30*0Sstevel@tonic-gate /*
31*0Sstevel@tonic-gate  * The intent here is to provide a means to make the value of
32*0Sstevel@tonic-gate  * bytes in an io-buffer correspond to the value of a long
33*0Sstevel@tonic-gate  * in the memory while doing the io a `long' at a time.
34*0Sstevel@tonic-gate  * Files written and read in this way are machine-independent.
35*0Sstevel@tonic-gate  *
36*0Sstevel@tonic-gate  */
37*0Sstevel@tonic-gate #include <values.h>
38*0Sstevel@tonic-gate 
sgetl(buffer)39*0Sstevel@tonic-gate long  sgetl(buffer)
40*0Sstevel@tonic-gate register char *buffer;
41*0Sstevel@tonic-gate {
42*0Sstevel@tonic-gate 	 register long l = 0;
43*0Sstevel@tonic-gate 	 register int i = BITSPERBYTE * sizeof(long);
44*0Sstevel@tonic-gate 
45*0Sstevel@tonic-gate 	 while ((i -= BITSPERBYTE) >= 0)
46*0Sstevel@tonic-gate 			 l |= (short) ((unsigned char) *buffer++) << i;
47*0Sstevel@tonic-gate 	 return  l;
48*0Sstevel@tonic-gate  }
49*0Sstevel@tonic-gate 
50