- replace dtoa w/ David's gdtoa, version 2008-03-15

- provide proper dtoa locks
- use the real strtof implementation
- add strtold, __hdtoa, __hldtoa
- add %a/%A support
- don't lose precision in printf, don't round to double anymore
- implement extended-precision versions of libc functions: fpclassify,
isnan, isinf, signbit, isnormal, isfinite, now that the ieee.h is
fixed
- separate vax versions of strtof, and __hdtoa
- add complex math support.  added functions: cacos, casin, catan,
ccos, csin, ctan, cacosh, casinh, catanh, ccosh, csinh, ctanh, cexp,
clog, cabs, cpow, csqrt, carg, cimag, conj, cproj, creal, cacosf,
casinf, catanf, ccosf, csinf, ctanf, cacoshf, casinhf, catanhf,
ccoshf, csinhf, ctanhf, cexpf, clogf, cabsf, cpowf, csqrtf, cargf,
cimagf, conjf, cprojf, crealf
- add fdim, fmax, fmin
- add log2. (adapted implementation e_log.c.  could be more acruate
& faster, but it's good enough for now)
- remove wrappers & cruft in libm, supposed to work-around mistakes
in SVID, etc.;  use ieee versions.  fixes issues in python 2.6 for
djm@
- make _digittoint static
- proper definitions for i386, and amd64 in ieee.h
- sh, powerpc don't really have extended-precision
- add missing definitions for mips64 (quad), m{6,8}k (96-bit) float.h
for LDBL_*
- merge lead to frac for m{6,8}k, for gdtoa to work properly
- add FRAC*BITS & EXT_TO_ARRAY32 definitions in ieee.h, for hdtoa&ldtoa
to use
- add EXT_IMPLICIT_NBIT definition, which indicates implicit
normalization bit
- add regression tests for libc: fpclassify and printf
- arith.h & gd_qnan.h definitions
- update ieee.h: hppa doesn't have quad-precision, hppa64 does
- add missing prototypes to gdtoaimp
- on 64-bit platforms make sure gdtoa doesn't use a long when it
really wants an int
- etc., what i may have forgotten...
- bump libm major, due to removed&changed symbols
- no libc bump, since this is riding on djm's libc major crank from
a day ago

discussed with / requested by / testing theo, sthen@, djm@, jsg@,
merdely@, jsing@, tedu@, brad@, jakemsr@, and others.
looks good to millert@
parts of the diff ok kettenis@

this commit does not include:
- man page changes

1 files changed, 13 insertions, 5 deletions

diff --git a/sys/arch/i386/include/ieee.h b/sys/arch/i386/include/ieee.h
index 55b3703277c..865fcb9eec6 100644
--- a/sys/arch/i386/include/ieee.h
+++ b/sys/arch/i386/include/ieee.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ieee.h,v 1.2 2003/06/02 23:27:47 millert Exp $ */
+/*	$OpenBSD: ieee.h,v 1.3 2008/09/07 20:36:06 martynas Exp $ */
 /*	$NetBSD: ieee.h,v 1.1 1996/09/30 16:34:25 ws Exp $ */
 
 /*
@@ -79,10 +79,19 @@
 #define	SNG_FRACBITS	23
 
 #define	DBL_EXPBITS	11
+#define	DBL_FRACHBITS	20
+#define	DBL_FRACLBITS	32
 #define	DBL_FRACBITS	52
 
 #define	EXT_EXPBITS	15
-#define	EXT_FRACBITS	112
+#define	EXT_FRACHBITS	32
+#define	EXT_FRACLBITS	32
+#define	EXT_FRACBITS	64
+
+#define	EXT_TO_ARRAY32(p, a) do {		\
+	(a)[0] = (uint32_t)(p)->ext_fracl;	\
+	(a)[1] = (uint32_t)(p)->ext_frach;	\
+} while(0)
 
 struct ieee_single {
 	u_int	sng_frac:23;
@@ -99,11 +108,10 @@ struct ieee_double {
 
 struct ieee_ext {
 	u_int	ext_fracl;
-	u_int	ext_fraclm;
-	u_int	ext_frachm;
-	u_int	ext_frach:16;
+	u_int	ext_frach;
 	u_int	ext_exp:15;
 	u_int	ext_sign:1;
+	u_int	ext_pad:16;
 };
 
 /*