| Vishal Bhoj | 82c8071 | 2015-12-15 21:13:33 +0530 | [diff] [blame] | 1 | /* $NetBSD: floatio.h,v 1.5 2005/05/14 23:51:02 christos Exp $ */
|
| 2 |
|
| 3 | /*-
|
| 4 | * Copyright (c) 1990, 1993
|
| 5 | * The Regents of the University of California. All rights reserved.
|
| 6 | *
|
| 7 | * This code is derived from software contributed to Berkeley by
|
| 8 | * Chris Torek.
|
| 9 | *
|
| 10 | * Redistribution and use in source and binary forms, with or without
|
| 11 | * modification, are permitted provided that the following conditions
|
| 12 | * are met:
|
| 13 | * 1. Redistributions of source code must retain the above copyright
|
| 14 | * notice, this list of conditions and the following disclaimer.
|
| 15 | * 2. Redistributions in binary form must reproduce the above copyright
|
| 16 | * notice, this list of conditions and the following disclaimer in the
|
| 17 | * documentation and/or other materials provided with the distribution.
|
| 18 | * 3. Neither the name of the University nor the names of its contributors
|
| 19 | * may be used to endorse or promote products derived from this software
|
| 20 | * without specific prior written permission.
|
| 21 | *
|
| 22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
| 23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
| 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
| 25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
| 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
| 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
| 28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
| 29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
| 30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
| 31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
| 32 | * SUCH DAMAGE.
|
| 33 | *
|
| 34 | * @(#)floatio.h 8.1 (Berkeley) 6/4/93
|
| 35 | */
|
| 36 |
|
| 37 | /*
|
| 38 | * Floating point scanf/printf (input/output) definitions.
|
| 39 | */
|
| 40 |
|
| 41 | /* 11-bit exponent (VAX G floating point) is 308 decimal digits */
|
| 42 | #define MAXEXP 308
|
| 43 | /* 128 bit fraction takes up 39 decimal digits; max reasonable precision */
|
| 44 | #define MAXFRACT 39
|
| 45 | /*
|
| 46 | * MAXEXPDIG is the maximum number of decimal digits needed to store a
|
| 47 | * floating point exponent in the largest supported format. It should
|
| 48 | * be ceil(log10(LDBL_MAX_10_EXP)) or, if hexadecimal floating point
|
| 49 | * conversions are supported, ceil(log10(LDBL_MAX_EXP)). But since it
|
| 50 | * is presently never greater than 5 in practice, we fudge it.
|
| 51 | */
|
| 52 | #define MAXEXPDIG 6
|
| 53 | #if LDBL_MAX_EXP > 999999
|
| 54 | #error "floating point buffers too small"
|
| 55 | #endif
|