diff options
| author | christos <christos@NetBSD.org> | 2005-05-14 23:51:02 +0000 |
|---|---|---|
| committer | christos <christos@NetBSD.org> | 2005-05-14 23:51:02 +0000 |
| commit | f432bbb6fd73bc9d4d16cf9c092973e4e42be033 (patch) | |
| tree | 56cbac36b68d8cb044f5972fa52a2acea82b3a69 /lib/libc/stdio/floatio.h | |
| parent | f023cb8f18705041e5180cb1052cdd3f01e81b9b (diff) | |
Add the missing wide char support functions from freebsd.
XXX: long double support is missing until we get gdtoa, and add the
necessary wide functions.
Diffstat (limited to 'lib/libc/stdio/floatio.h')
| -rw-r--r-- | lib/libc/stdio/floatio.h | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/lib/libc/stdio/floatio.h b/lib/libc/stdio/floatio.h index ecef6340c97..6c04cc2e2c6 100644 --- a/lib/libc/stdio/floatio.h +++ b/lib/libc/stdio/floatio.h @@ -1,4 +1,4 @@ -/* $NetBSD: floatio.h,v 1.4 2003/08/07 16:43:24 agc Exp $ */ +/* $NetBSD: floatio.h,v 1.5 2005/05/14 23:51:02 christos Exp $ */ /*- * Copyright (c) 1990, 1993 @@ -42,3 +42,14 @@ #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 |
