floatio.h revision 256281 
1267897Sdelphij/*-
2267897Sdelphij * Copyright (c) 1990, 1993
3267897Sdelphij *	The Regents of the University of California.  All rights reserved.
4191771Sobrien *
5234449Sobrien * This code is derived from software contributed to Berkeley by
6234449Sobrien * Chris Torek.
7267897Sdelphij *
8267897Sdelphij * Redistribution and use in source and binary forms, with or without
9267897Sdelphij * modification, are permitted provided that the following conditions
10267897Sdelphij * are met:
11267897Sdelphij * 1. Redistributions of source code must retain the above copyright
12267897Sdelphij *    notice, this list of conditions and the following disclaimer.
13267897Sdelphij * 2. Redistributions in binary form must reproduce the above copyright
14267897Sdelphij *    notice, this list of conditions and the following disclaimer in the
15267897Sdelphij *    documentation and/or other materials provided with the distribution.
16267897Sdelphij * 4. Neither the name of the University nor the names of its contributors
17267897Sdelphij *    may be used to endorse or promote products derived from this software
18275698Sdelphij *    without specific prior written permission.
19275698Sdelphij *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 *	@(#)floatio.h	8.1 (Berkeley) 6/4/93
33 * $FreeBSD: stable/10/lib/libc/stdio/floatio.h 165903 2007-01-09 00:28:16Z imp $
34 */
35
36/*
37 * Floating point scanf/printf (input/output) definitions.
38 */
39
40/*
41 * MAXEXPDIG is the maximum number of decimal digits needed to store a
42 * floating point exponent in the largest supported format.  It should
43 * be ceil(log10(LDBL_MAX_10_EXP)) or, if hexadecimal floating point
44 * conversions are supported, ceil(log10(LDBL_MAX_EXP)).  But since it
45 * is presently never greater than 5 in practice, we fudge it.
46 */
47#define	MAXEXPDIG	6
48#if LDBL_MAX_EXP > 999999
49#error "floating point buffers too small"
50#endif
51
52char *__hdtoa(double, const char *, int, int *, int *, char **);
53char *__hldtoa(long double, const char *, int, int *, int *, char **);
54char *__ldtoa(long double *, int, int, int *, int *, char **);
55