1 /* $OpenBSD: floatio.h,v 1.4 2008/09/07 20:36:08 martynas Exp $ */
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36 * Floating point scanf/printf (input/output) definitions.
39 /* 11-bit exponent (VAX G floating point) is 308 decimal digits */
41 /* 128 bit fraction takes up 39 decimal digits; max reasonable precision */
45 * MAXEXPDIG is the maximum number of decimal digits needed to store a
46 * floating point exponent in the largest supported format. It should
47 * be ceil(log10(LDBL_MAX_10_EXP)) or, if hexadecimal floating point
48 * conversions are supported, ceil(log10(LDBL_MAX_EXP)). But since it
49 * is presently never greater than 5 in practice, we fudge it.
52 #if LDBL_MAX_EXP > 999999
53 #error "floating point buffers too small"
56 char *__hdtoa(double, const char *, int, int *, int *, char **);
57 char *__hldtoa(long double, const char *, int, int *, int *, char **);
58 char *__ldtoa(long double *, int, int, int *, int *, char **);
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