c1c8f42080
Changed core routines to call __ieee754_sqrt() instead of sqrt(). I
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reported this enhancement to fdlibm-comments, and got the following
reply:
Date: Thu, 11 May 1995 14:35:25 -0700
From: Kwok.Ng@Eng.Sun.COM (KC Ng)
To: fdlibm-comments@sunpro.Eng.Sun.COM , jtc@cygnus.com
Subject: Re: fdlibm 5.2: why do core functions use sqrt?
> I noticed that core (e_*.c) fdlibm functions like __ieee754_acos()
> ensure that they call sqrt() with arguments in range (x > 0), when
> they could call __ieee754_sqrt() directly.
>
> Since sqrt() does a lot more work (verifies x is in range, etc.) is
> there any reason for this? I'd think that calling __iee754_sqrt()
> would be more appropriate. ....
You are right. __ieee754_sqrt should be in use with e_*.c.
1995-05-12 04:57:13 +00:00
9ae90685f2
Winning Strategies has placed this code in the public domain.
1995-05-11 23:03:44 +00:00
d042a3eb20
Id -> NetBSD
1995-05-10 20:44:22 +00:00
5abf82e236
Id -> NetBSD
1995-05-08 23:55:16 +00:00
0898887210
Id -> NetBSD
1995-05-08 23:44:37 +00:00
750e07c91c
i387 float version of atan2()
1995-05-08 23:35:10 +00:00
11fa45b258
Add i387 "float" functions to the makefile
1995-05-03 20:42:23 +00:00
684161edae
Added i387 remainderf and sqrtf
1995-05-03 14:47:35 +00:00
5c7208348c
Winning Strategies has placed this code into the Public Domain
1995-04-28 22:43:31 +00:00
5e5fe216ab
removed log2 from manpage, libm doesn't provide that function.
1995-04-27 18:21:43 +00:00
df8b005f6e
First cut at adding float versions of math functions to the manpages.
1995-04-14 18:39:53 +00:00
d6c3ebedb4
Fix overlooked FIXME: unsigned int -> u_int32_t.
1995-03-25 01:48:53 +00:00
fd8d17a56d
First pass at documenting "float" versions of these functions.
1995-03-04 01:36:29 +00:00
4c34be6b52
Clean up deleted files.
1995-03-01 00:00:00 +00:00
ea66efc784
Enable mc68881 versions of remainder() and scalb().
1995-02-18 01:46:41 +00:00
8961dd234b
Special case 0, as was done in s_scalbn.S.
...
I'm only doing this for consistancy --- someone really needs to measure
whether this optimization is justified.
1995-02-18 01:39:51 +00:00
324e516335
68881-assisted versions of these functions.
1995-02-18 01:24:42 +00:00
6a189fc179
Remove unused static constant "one".
1995-01-25 01:07:23 +00:00
3d9c0cdc87
Integrate last of the relavant changes from fdlibm 5.2:
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4. Performance issue on rem_pio2
An attempt to speed up the argument reduction in the trig function is to
consider pi/4 < x < 3pi/4 a special case. This was done in the file
e_rem_pio2.c
1995-01-25 01:06:35 +00:00
10a7ebda19
Bug fix from fdlibm 5.2.
1995-01-16 20:05:43 +00:00
3a370daf86
specify man pages the new way.
1994-12-22 09:44:45 +00:00
600d3f84d5
Add volatile qualifier to huge and tiny, so that huge*huge and tiny*tiny
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are performed at run-time.
1994-12-16 08:38:20 +00:00
c446bbd004
Added s_isinff.c
1994-09-25 17:31:51 +00:00
d797a5d5e9
__infinity[] and isinf() for systems whose C libraries don't supply them;
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and isinff(), a "float" version of isinf().
1994-09-25 17:29:47 +00:00
43e6dd4c8e
Add prototype for isinff().
1994-09-25 17:27:56 +00:00
d1f06e0b8f
LIBM_SCCS must be defined for the RCS ID to be defined.
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This library will soon be used by DJGPP. And since memory is often tight
on DOS machines, there is little benifit to be had from including RCS IDs.
1994-09-22 16:39:08 +00:00
b4f978017e
Remove CYGNUS_LOCAL comment: I maintain this code for NetBSD, not Cygnus
1994-09-13 00:40:33 +00:00
21a91228b1
Only extract lx if we need it.
1994-08-26 13:37:40 +00:00
9f19de9cde
Remove lie (in a comment) about conversion between 80 bit ot 64 bit reals,
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since we set up the fpu to do all calculations in 64 bit mode at this time.
1994-08-26 00:20:34 +00:00
4b2017adfe
Assembly language versions of some of the "float" functions.
1994-08-19 03:56:44 +00:00
1af6796a8d
The fyl2xp1 instruction has a limited range:
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-(1 - (sqrt(2) / 2)) <= x <= sqrt(2) - 1
so we can't use it.
Also, I'm not sure fyl2xp1's extra precision will
matter once the result is converted from extended
real (80 bits) back to double real (64 bits).
1994-08-19 03:55:57 +00:00
fad867417f
Bump minor number to account for additions of "float" versions of
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the math functions.
1994-08-19 00:44:35 +00:00
b0c9d09246
Change int -> int32_t and unsigned int -> u_int32_t to improve portabilty
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to machines where int != 32 bits.
1994-08-18 23:04:51 +00:00
c120d36cd8
Major Bogon: change %ebp to %esp, as I don't set up a stack frame.
1994-08-18 20:42:35 +00:00
7fa12b9866
Clean up deleted files.
1994-08-10 20:35:54 +00:00
8346e333d0
Float versions of math functions. From Ian Taylor (ian@cygnus.com), with
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minor changes by me.
1994-08-10 20:30:00 +00:00
bdde9305da
Use RCSID macro for RCS ID's.
1994-03-18 23:22:10 +00:00
6d76330bec
Added RCS ID's. ID's use new RCSID macro from <machine/asm.h>.
1994-03-12 01:30:22 +00:00
d72111c735
Update for mc68881 ceil(), floor(), & rint(), and s_sqrt.S -> e_sqrt.S
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naming mistake.
1994-03-12 01:20:02 +00:00
912d356b80
Clean up deleted files.
1994-03-12 01:16:39 +00:00
41dbc84e05
The hardware sqrt function is supposed to be __ieee754_sqrt(), and live in
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e_sqrt.S.
1994-03-12 01:16:38 +00:00
daefb8ce62
converted ceil(), floor(), & rint() from old to new math libraries.
1994-03-12 01:10:51 +00:00
c9566fe572
Replace code that was "truncated" when it was converted from old
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math library.
1994-03-12 01:09:29 +00:00
593d18fc49
Added a ieee_test(3) man page (Like SunOS) derrived from an earlier copy
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of ieee(3). This man page describes logb, scalb, and significand, which
are really only useful for verifying IEEE754 compliance.
1994-03-11 17:18:54 +00:00
da7c295a78
Clean up deleted files.
1994-03-11 01:34:40 +00:00
cc2f880912
infnan was a vaxism.
1994-03-11 01:34:18 +00:00
d264f5578d
Updated for new math library.
1994-03-11 01:32:08 +00:00
2191277bb6
Fix typo.
1994-03-10 18:15:07 +00:00
2ed7077300
Added i387 version of significand().
1994-03-10 18:13:32 +00:00
6ee224c2ec
Christos Zoulas' Makefile fixes.
1994-03-08 17:20:51 +00:00
jtc