xref: /illumos-gate/usr/src/contrib/ast/src/lib/libast/string/fmtbase.c (revision b30d193948be5a7794d7ae3ba0ed9c2f72c88e0f)
1 /***********************************************************************
2 *                                                                      *
3 *               This software is part of the ast package               *
4 *          Copyright (c) 1985-2011 AT&T Intellectual Property          *
5 *                      and is licensed under the                       *
6 *                 Eclipse Public License, Version 1.0                  *
7 *                    by AT&T Intellectual Property                     *
8 *                                                                      *
9 *                A copy of the License is available at                 *
10 *          http://www.eclipse.org/org/documents/epl-v10.html           *
11 *         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *
12 *                                                                      *
13 *              Information and Software Systems Research               *
14 *                            AT&T Research                             *
15 *                           Florham Park NJ                            *
16 *                                                                      *
17 *                 Glenn Fowler <gsf@research.att.com>                  *
18 *                  David Korn <dgk@research.att.com>                   *
19 *                   Phong Vo <kpv@research.att.com>                    *
20 *                                                                      *
21 ***********************************************************************/
22 #pragma prototyped
23 /*
24  * Glenn Fowler
25  * AT&T Bell Laboratories
26  *
27  * return base b representation for n
28  * if p!=0 then base prefix is included
29  * otherwise if n==0 or b==0 then output is signed base 10
30  */
31 
32 #include <ast.h>
33 
34 char*
fmtbase(intmax_t n,int b,int p)35 fmtbase(intmax_t n, int b, int p)
36 {
37 	char*	buf;
38 	int	z;
39 
40 	if (!p)
41 	{
42 		if (!n)
43 			return "0";
44 		if (!b)
45 			return fmtint(n, 0);
46 		if (b == 10)
47 			return fmtint(n, 1);
48 	}
49 	buf = fmtbuf(z = 72);
50 	sfsprintf(buf, z, p ? "%#..*I*u" : "%..*I*u", b, sizeof(n), n);
51 	return buf;
52 }
53 
54 #if __OBSOLETE__ < 20140101
55 
56 #undef	fmtbasell
57 
58 #if defined(__EXPORT__)
59 #define extern		__EXPORT__
60 #endif
61 
62 extern char*
fmtbasell(intmax_t n,int b,int p)63 fmtbasell(intmax_t n, int b, int p)
64 {
65 	return fmtbase(n, b, p);
66 }
67 
68 #undef	extern
69 
70 #endif
71