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