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- /* $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 **);
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