floatio.h

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00001 /*-
00002  * Copyright (c) 1990, 1993
00003  *      The Regents of the University of California.  All rights reserved.
00004  *
00005  * This code is derived from software contributed to Berkeley by
00006  * Chris Torek.
00007  *
00008  * Redistribution and use in source and binary forms, with or without
00009  * modification, are permitted provided that the following conditions
00010  * are met:
00011  * 1. Redistributions of source code must retain the above copyright
00012  *    notice, this list of conditions and the following disclaimer.
00013  * 2. Redistributions in binary form must reproduce the above copyright
00014  *    notice, this list of conditions and the following disclaimer in the
00015  *    documentation and/or other materials provided with the distribution.
00016  * 3. All advertising materials mentioning features or use of this software
00017  *    must display the following acknowledgement:
00018  *      This product includes software developed by the University of
00019  *      California, Berkeley and its contributors.
00020  * 4. Neither the name of the University nor the names of its contributors
00021  *    may be used to endorse or promote products derived from this software
00022  *    without specific prior written permission.
00023  *
00024  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
00025  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00026  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00027  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
00028  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00029  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
00030  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
00031  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
00032  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
00033  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00034  * SUCH DAMAGE.
00035  *
00036  *      @(#)floatio.h   8.1 (Berkeley) 6/4/93
00037  * $FreeBSD: src/lib/libc/stdio/floatio.h,v 1.5 2004/01/18 08:28:47 das Exp $
00038  */
00039 
00040 /*
00041  * Floating point scanf/printf (input/output) definitions.
00042  */
00043 
00044 /*
00045  * MAXEXPDIG is the maximum number of decimal digits needed to store a
00046  * floating point exponent in the largest supported format.  It should
00047  * be ceil(log10(LDBL_MAX_10_EXP)) or, if hexadecimal floating point
00048  * conversions are supported, ceil(log10(LDBL_MAX_EXP)).  But since it
00049  * is presently never greater than 5 in practice, we fudge it.
00050  */
00051 #define MAXEXPDIG       6
00052 #if LDBL_MAX_EXP > 999999
00053 #error "floating point buffers too small"
00054 #endif
00055 
00056 char *__hdtoa(double, const char *, int, int *, int *, char **);
00057 char *__hldtoa(long double, const char *, int, int *, int *, char **);
00058 char *__ldtoa(long double *, int, int, int *, int *, char **);

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