| /* $OpenBSD: floatio.h,v 1.4 2008/09/07 20:36:08 martynas Exp $ */ |
| |
| /*- |
| * Copyright (c) 1990, 1993 |
| * The Regents of the University of California. All rights reserved. |
| * |
| * This code is derived from software contributed to Berkeley by |
| * Chris Torek. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. Neither the name of the University nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| */ |
| |
| /* |
| * Floating point scanf/printf (input/output) definitions. |
| */ |
| |
| /* 11-bit exponent (VAX G floating point) is 308 decimal digits */ |
| #define MAXEXP 308 |
| /* 128 bit fraction takes up 39 decimal digits; max reasonable precision */ |
| #define MAXFRACT 39 |
| |
| /* |
| * MAXEXPDIG is the maximum number of decimal digits needed to store a |
| * floating point exponent in the largest supported format. It should |
| * be ceil(log10(LDBL_MAX_10_EXP)) or, if hexadecimal floating point |
| * conversions are supported, ceil(log10(LDBL_MAX_EXP)). But since it |
| * is presently never greater than 5 in practice, we fudge it. |
| */ |
| #define MAXEXPDIG 6 |
| #if LDBL_MAX_EXP > 999999 |
| #error "floating point buffers too small" |
| #endif |
| |
| char *__hdtoa(double, const char *, int, int *, int *, char **); |
| char *__hldtoa(long double, const char *, int, int *, int *, char **); |
| char *__ldtoa(long double *, int, int, int *, int *, char **); |
