c1c8f42080
Changed core routines to call __ieee754_sqrt() instead of sqrt(). I
...
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:
...
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
...
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;
...
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.
...
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,
...
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:
...
-(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
...
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
...
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
...
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
...
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
...
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
...
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
...
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
aff2eb8384
More i387 libm support.
1994-03-04 17:39:50 +00:00
39abd30929
Don't determine byte order at run time.
...
This also "solves" the problem of GCC optimization leading to incorrect
results.
1994-03-03 17:04:03 +00:00
efcdc02b30
Add cabs() & drem() for BSD libm compatibility.
1994-03-01 17:14:34 +00:00
f0cf5168c0
Changes for new math library.
1994-02-25 19:43:56 +00:00
5d19bb2922
Update manpages for new math library.
1994-02-25 19:32:18 +00:00
0dff3c6f48
Optimize the common case (theta < 2^63).
1994-02-18 17:38:59 +00:00
b365a34dd9
i387 specific ilogb()
1994-02-18 02:50:11 +00:00
af4a36425d
Add RCS ID's.
1994-02-18 02:27:42 +00:00
bc3f7bf6db
Add RCS ID's.
1994-02-18 02:24:43 +00:00
c709120244
i387-specific math functions.
1994-02-16 19:21:10 +00:00
44adfd9d70
Compiled shared too.
1994-02-15 01:00:46 +00:00
03898350df
Functions brought over from the old math library.
1994-02-14 21:55:12 +00:00
39b2c53536
Comment out all functions that are also provided by our C library: fabs(),
...
frexp(), isnan(), ldexp(), and modf().
1994-02-14 17:32:56 +00:00
c6776a9449
isnan() was provided by both C and Math libraries.
1994-02-14 17:07:07 +00:00
101f9521b3
More i387 math support, too bad we can't enable it
1994-02-12 01:31:52 +00:00
899fe71cbd
Clean up deleted files.
1994-02-11 18:35:37 +00:00
c283017b5f
Changes for fdlibm based math library
1994-02-11 18:35:35 +00:00
1e7d35f8a1
Beginning of changes needed for fdlibm
1994-02-11 18:34:05 +00:00
14664faf49
Clean up deleted files.
1994-02-11 18:24:40 +00:00
c632d011dd
FPU specific math code.
1994-02-11 18:20:17 +00:00
43969d1349
Clean up deleted files.
1994-02-11 18:16:42 +00:00
b0122e807d
Include <math.h> instead of "fdlibm.h"
...
Byteorder fix for s_frexp.c.
1994-02-11 18:08:08 +00:00
6712a2b42b
Clean up deleted files.
1994-02-11 17:56:43 +00:00
13618394b2
Fdlibm 5.1
1994-02-11 17:52:17 +00:00
6e9b4b15e0
moved struct out of param lists.
1994-02-06 18:48:28 +00:00
2595681cf2
fixed warns and compile errors (under newer gcc's)
1994-02-06 18:48:00 +00:00
62345776d3
Fix spelling error in Copyright notice
1994-01-28 22:48:31 +00:00
a072679039
Fix spelling errors.
1994-01-11 00:46:50 +00:00
4bc3889433
Clean up deleted files.
1993-12-06 12:12:05 +00:00
29c9f7be20
use .S not .s
1993-12-06 12:11:42 +00:00
65b0c9812e
update for MACHINE_ARCH
1993-12-05 01:10:14 +00:00
5e7056a72c
Fix formatting of SEE ALSO section.
1993-10-29 22:57:17 +00:00
3e27155a88
This type of error checking/reporting is required for many functions,
...
and is desirable for most of the rest.
1993-10-29 22:24:02 +00:00
4899342fb1
Holds value of ERANGE and EDOM for assembly routine's error reporting.
1993-10-29 22:22:31 +00:00
4a01193d1f
exp & log functions.
1993-10-29 18:11:00 +00:00
54601ddeac
Don't assume the rounding control bits are 00, make sure that both bits
...
are set (or reset) as appropriate.
1993-10-29 18:06:16 +00:00
6ca09b6171
Fix manual page typos.
1993-10-29 17:10:08 +00:00
ec0553e82c
More work on i387 specific math library
1993-10-28 19:02:53 +00:00
1edfcdc790
Additional work on a i387 specific math library.
1993-10-28 00:14:13 +00:00
af06d69559
Clean up deleted files.
1993-10-26 23:20:31 +00:00
5742893287
Start of i387 specific math library functions.
1993-10-26 23:19:34 +00:00
9a3e07c4c1
Use BYTE_ORDER == LITTLE_ENDIAN instead of -Dnational to select byte order
...
of floating point numbers.
The assumption that a processor's floats use the same order as its integers
is probably unwarranted, but it is better than requiring non-national CPUs
to #define national, as that drags in national-specific code too.
(According to a comment in the code, the national FPU does not do infinity)
1993-10-21 00:41:56 +00:00
6240619b9d
Add comma between gamma and lgamma in NAME section.
1993-10-21 00:23:23 +00:00
7b51b77358
Removed duplicate names from the NAME section.
1993-10-21 00:22:10 +00:00
211d527be4
fix to pow so that pow(x,y) for x == 0 or x == infinity works.
1993-10-19 01:31:09 +00:00
a3b3dd2348
Install cbrt link to sqrt manpage.
1993-10-11 19:20:24 +00:00
5258e5ce3d
No PIC, you probably don't want the overhead in these functions.
1993-10-05 21:52:07 +00:00
1658725165
Fix grammar of HISTORY section.
1993-10-05 16:46:09 +00:00
acd1aa18bc
Remove trailing comma from SEE ALSO list.
1993-10-05 16:33:47 +00:00
4c0b8d21f0
Removed trailing in SEE ALSO list
1993-10-04 18:07:15 +00:00
jtc