1*2fe8fb19SBen Gras /* $NetBSD: floatio.h,v 1.5 2005/05/14 23:51:02 christos Exp $ */ 2*2fe8fb19SBen Gras 3*2fe8fb19SBen Gras /*- 4*2fe8fb19SBen Gras * Copyright (c) 1990, 1993 5*2fe8fb19SBen Gras * The Regents of the University of California. All rights reserved. 6*2fe8fb19SBen Gras * 7*2fe8fb19SBen Gras * This code is derived from software contributed to Berkeley by 8*2fe8fb19SBen Gras * Chris Torek. 9*2fe8fb19SBen Gras * 10*2fe8fb19SBen Gras * Redistribution and use in source and binary forms, with or without 11*2fe8fb19SBen Gras * modification, are permitted provided that the following conditions 12*2fe8fb19SBen Gras * are met: 13*2fe8fb19SBen Gras * 1. Redistributions of source code must retain the above copyright 14*2fe8fb19SBen Gras * notice, this list of conditions and the following disclaimer. 15*2fe8fb19SBen Gras * 2. Redistributions in binary form must reproduce the above copyright 16*2fe8fb19SBen Gras * notice, this list of conditions and the following disclaimer in the 17*2fe8fb19SBen Gras * documentation and/or other materials provided with the distribution. 18*2fe8fb19SBen Gras * 3. Neither the name of the University nor the names of its contributors 19*2fe8fb19SBen Gras * may be used to endorse or promote products derived from this software 20*2fe8fb19SBen Gras * without specific prior written permission. 21*2fe8fb19SBen Gras * 22*2fe8fb19SBen Gras * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23*2fe8fb19SBen Gras * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24*2fe8fb19SBen Gras * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25*2fe8fb19SBen Gras * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26*2fe8fb19SBen Gras * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27*2fe8fb19SBen Gras * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28*2fe8fb19SBen Gras * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29*2fe8fb19SBen Gras * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30*2fe8fb19SBen Gras * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31*2fe8fb19SBen Gras * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32*2fe8fb19SBen Gras * SUCH DAMAGE. 33*2fe8fb19SBen Gras * 34*2fe8fb19SBen Gras * @(#)floatio.h 8.1 (Berkeley) 6/4/93 35*2fe8fb19SBen Gras */ 36*2fe8fb19SBen Gras 37*2fe8fb19SBen Gras /* 38*2fe8fb19SBen Gras * Floating point scanf/printf (input/output) definitions. 39*2fe8fb19SBen Gras */ 40*2fe8fb19SBen Gras 41*2fe8fb19SBen Gras /* 11-bit exponent (VAX G floating point) is 308 decimal digits */ 42*2fe8fb19SBen Gras #define MAXEXP 308 43*2fe8fb19SBen Gras /* 128 bit fraction takes up 39 decimal digits; max reasonable precision */ 44*2fe8fb19SBen Gras #define MAXFRACT 39 45*2fe8fb19SBen Gras /* 46*2fe8fb19SBen Gras * MAXEXPDIG is the maximum number of decimal digits needed to store a 47*2fe8fb19SBen Gras * floating point exponent in the largest supported format. It should 48*2fe8fb19SBen Gras * be ceil(log10(LDBL_MAX_10_EXP)) or, if hexadecimal floating point 49*2fe8fb19SBen Gras * conversions are supported, ceil(log10(LDBL_MAX_EXP)). But since it 50*2fe8fb19SBen Gras * is presently never greater than 5 in practice, we fudge it. 51*2fe8fb19SBen Gras */ 52*2fe8fb19SBen Gras #define MAXEXPDIG 6 53*2fe8fb19SBen Gras #if LDBL_MAX_EXP > 999999 54*2fe8fb19SBen Gras #error "floating point buffers too small" 55*2fe8fb19SBen Gras #endif 56