Changes in float.h

ee0d5ab9 - Copy amd64 float.h to x86 and merge with i386 float.h. Replace

Sun, 04 Mar 2012 14:00:32 +0000

Copy amd64 float.h to x86 and merge with i386 float.h. Replaceamd64/i386/pc98 float.h with stubs. List of files: /freebsd-12.1/sys/i386/include/float.h

2ee7b1d4 - Add C11 macros describing subnormal numbers to float.h.

Mon, 23 Jan 2012 06:36:41 +0000

Add C11 macros describing subnormal numbers to float.h.Reviewed by: bde List of files: /freebsd-12.1/sys/i386/include/float.h

021dfaf0 - Oops, back out previous commit since it was to the wrong file.

Wed, 05 Mar 2008 11:17:20 +0000

Oops, back out previous commit since it was to the wrong file. List of files: /freebsd-12.1/sys/i386/include/float.h

69c0326e - Change float_t and double_t to long double on i386. All floating point

Wed, 05 Mar 2008 11:11:53 +0000

Change float_t and double_t to long double on i386. All floating pointexpressions on i386 are evaluated in the range of the long double type,so this is wrong in a different but hopefully less worse way thanbefore. Since expressions are evaluated in long double registers,there is no runtime cost to using long double instead of double todeclare intermediate values (except in cases where this avoids compilerbugs), and by careful use of float_t or double_t it is possible toavoid some of the compiler bugs in this area, provided these types aredeclared as long double.I was going to change float.h to be less broken and more usable incombination with the change here (in particular, it is more necessaryto know the effective number of bits in a double_t when double_t !=double, since DBL_MANT_DIG no longer logically gives this, andLDBL_MANT_DIG doesn't give it either with FreeBSD-i386's defaultrounding precision. However, this was too hard for now. In particular,LDBL_MANT_DIG is used a lot in libm, so it cannot be changed. Onething that is completely broken now is LDBL_MAX. This may have sortof worked when it was changed from DBL_MAX in 2002 (adding 0 to it atruntime gave +Inf, but you could at least compare with it), but startingwith gcc-3.3.1 in 2003, it is always +Inf due to evaluating it atcompile time in the default rounding precision. List of files: /freebsd-12.1/sys/i386/include/float.h

86cb007f - /* -> /*- for copyright notices, minor format tweaks as necessary

Thu, 06 Jan 2005 22:18:23 +0000

/* -> /*- for copyright notices, minor format tweaks as necessary List of files: /freebsd-12.1/sys/i386/include/float.h

479f8d22 - Make FLT_ROUNDS correctly reflect the dynamic rounding mode.

Mon, 19 Jul 2004 08:17:25 +0000

Make FLT_ROUNDS correctly reflect the dynamic rounding mode. List of files: /freebsd-12.1/sys/i386/include/float.h

cb490814 - remove needless blankline

Mon, 28 Jun 2004 03:08:17 +0000

remove needless blankline List of files: /freebsd-12.1/sys/i386/include/float.h

be393068 - Hide FLT_EVAL_METHOD and DECIMAL_DIG in pre-C99 compilation

Sun, 25 Apr 2004 02:36:29 +0000

Hide FLT_EVAL_METHOD and DECIMAL_DIG in pre-C99 compilationenvironments.PR: 63935Submitted by: Stefan Farfeleder List of files: /freebsd-12.1/sys/i386/include/float.h

f36cfd49 - Remove advertising clause from University of California Regent's

Wed, 07 Apr 2004 20:46:16 +0000

Remove advertising clause from University of California Regent'slicense, per letter dated July 22, 1999 and email from Peter Wemm,Alan Cox and Robert Watson.Approved by: core, peter, alc, rwatson List of files: /freebsd-12.1/sys/i386/include/float.h

8cf5ed51 - Implement fpclassify():

Sat, 08 Feb 2003 20:37:55 +0000

Implement fpclassify():o Add a MD header private to libc called _fpmath.h; this header contains bitfield layouts of MD floating-point types.o Add a MI header private to libc called fpmath.h; this header contains bitfield layouts of MI floating-point types.o Add private libc variables to lib/libc/$arch/gen/infinity.c for storing NaN values.o Add __double_t and __float_t to , and provide double_t and float_t typedefs in .o Add some C99 manifest constants (FP_ILOGB0, FP_ILOGBNAN, HUGE_VALF, HUGE_VALL, INFINITY, NAN, and return values for fpclassify()) to and others (FLT_EVAL_METHOD, DECIMAL_DIG) to via .o Add C99 macro fpclassify() which calls __fpclassify{d,f,l}() based on the size of its argument. __fpclassifyl() is never called on alpha because (sizeof(long double) == sizeof(double)), which is good since __fpclassifyl() can't deal with such a small `long double'.This was developed by David Schultz and myself with input from bde andfenner.PR: 23103Submitted by: David Schultz (significant portions)Reviewed by: bde, fenner (earlier versions) List of files: /freebsd-12.1/sys/i386/include/float.h

d7937918 - Use the correct values for LDBL_*. Libc doesn't completely support

Fri, 25 Oct 2002 07:02:52 +0000

Use the correct values for LDBL_*. Libc doesn't completely supportlong doubles at the moment (printf truncates them to doubles).However, long doubles to appear to work to the ranges listed in thiscommit on both -stable (4.5) and -current. There may be some slightrounding issues with long doubles, but that's an orthogonal issue tothese constants.I've had this in my local tree for 3 months, and in my company's localtree for 15 months with no ill effects.Obtained from: NetBSDNot likely to like it: bde List of files: /freebsd-12.1/sys/i386/include/float.h

c3aac50f - $Id$ -> $FreeBSD$

Sat, 28 Aug 1999 01:08:13 +0000

$Id$ -> $FreeBSD$ List of files: /freebsd-12.1/sys/i386/include/float.h

6875d254 - Back out part 1 of the MCFH that changed $Id$ to $FreeBSD$. We are not

Sat, 22 Feb 1997 09:48:43 +0000

Back out part 1 of the MCFH that changed $Id$ to $FreeBSD$. We are notready for it yet. List of files: /freebsd-12.1/sys/i386/include/float.h

1130b656 - Make the long-awaited change from $Id$ to $FreeBSD$

Tue, 14 Jan 1997 07:20:47 +0000

Make the long-awaited change from $Id$ to $FreeBSD$This will make a number of things easier in the future, as well as (finally!)avoiding the Id-smashing problem which has plagued developers for so long.Boy, I'm glad we're not using sup anymore. This update would have beeninsane otherwise. List of files: /freebsd-12.1/sys/i386/include/float.h

6e393973 - Made all header files idempotent and moved incorrect common data from

Sun, 07 Nov 1993 17:43:17 +0000

Made all header files idempotent and moved incorrect common data fromheaders into a related source file. Added cons.h as first step towardsmoving i386/i386/cons.h to machine/cons.h where it belongs. List of files: /freebsd-12.1/sys/i386/include/float.h

34a8ed1b - Removed all patch kit headers, sccsid and rcsid strings, put $Id$ in, some

Sat, 16 Oct 1993 14:40:57 +0000

Removed all patch kit headers, sccsid and rcsid strings, put $Id$ in, someminor cleanup. Added $Id$ to files that did not have any version info, etc List of files: /freebsd-12.1/sys/i386/include/float.h

beb7ebb0 - Added (protection) around negative constants, in case a program wants

Wed, 30 Jun 1993 22:59:18 +0000

Added (protection) around negative constants, in case a program wantsto use the negative of that constant.#define NEG_NUM -3#define SAFE_NEG_NUM (-3)i = -NEG_NUM; /* Error --3 */j = -SAFE_NEG_NUM /* Okay -(-3) */ List of files: /freebsd-12.1/sys/i386/include/float.h

330b1513 - Setting up for updated (usable) FPE atof/vfprintf/vfscanf fixes

Tue, 29 Jun 1993 13:34:33 +0000

Setting up for updated (usable) FPE atof/vfprintf/vfscanf fixes List of files: /freebsd-12.1/sys/i386/include/float.h

5b81b6b3 - Initial import, 0.1 + pk 0.2.4-B1

Sat, 12 Jun 1993 14:58:17 +0000

Initial import, 0.1 + pk 0.2.4-B1 List of files: /freebsd-12.1/sys/i386/include/float.h