Hello Kai and Everybody!
A couple of comments about whether to use special cases for
pow (x, y) for things like y = 0.5 or y = integer...
On Tue, May 3, 2011 at 6:58 AM, Kai Tietz wrote:
> 2011/5/3 Peter Rockett :
>> On 03/05/2011 10:11, Kai Tietz wrote:
>> ...
>> The reason is not introducing a
2011/5/3 Peter Rockett :
> On 03/05/2011 10:11, Kai Tietz wrote:
>> 2011/5/3 JonY:
>>> On 5/3/2011 04:05, Kai Tietz wrote:
2011/5/2 Peter Rockett:
> On 02/05/2011 17:00, Keith Marshall wrote:
>> On 02/05/11 16:30, Charles Wilson wrote:
So, we would like sqrt (x) and pow (x, 0.
2011/5/3 JonY :
> On 5/3/2011 04:05, Kai Tietz wrote:
>> 2011/5/2 Peter Rockett :
>>> On 02/05/2011 17:00, Keith Marshall wrote:
On 02/05/11 16:30, Charles Wilson wrote:
>> So, we would like sqrt (x) and pow (x, 0.5) to agree.
>>>
>>> The point below about off-topic diversions into precisi
On 5/3/2011 04:05, Kai Tietz wrote:
> 2011/5/2 Peter Rockett :
>> On 02/05/2011 17:00, Keith Marshall wrote:
>>> On 02/05/11 16:30, Charles Wilson wrote:
> So, we would like sqrt (x) and pow (x, 0.5) to agree.
>>
>> The point below about off-topic diversions into precision is valid but
>> can I
--
From: K. Frank [mailto:kfrank2...@gmail.com]
Sent: Sunday, May 01, 2011 11:29 AM
To: mingw64; MinGW Users List
Subject: Re: [Mingw-w64-public] [Mingw-users] Math library discrepancies
that surprised me.
Hello Jon!
On Sun, May 1, 2011 at 10:17 AM, JonY wrote:
> On 5/1/2011 22:03, James K Beard
Hello Jon!
On Sun, May 1, 2011 at 10:17 AM, JonY wrote:
> On 5/1/2011 22:03, James K Beard wrote:
>> Now, about that math library problem...
>> ...
>> AFAIK, all currently produced FPUs are IEEE compliant. Are there some out
>> there that are still bucking the inevitable?
>
> -- Putting mingw li
, 2011 10:18 AM
To: mingw-w64-public@lists.sourceforge.net
Cc: MinGW Users List
Subject: Re: [Mingw-w64-public] [Mingw-users] Math library discrepancies
that surprised me.
On 5/1/2011 22:03, James K Beard wrote:
> Now, about that math library problem -- it seems to me that asking
> full ma
On 5/1/2011 22:03, James K Beard wrote:
> Now, about that math library problem -- it seems to me that asking full
> mantissa accuracy and agreement for 32-bit and 64-bit floating point is
> reasonable. Differences between FPUs makes full mantissa accuracy and
> agreement at 80 bits a bit of a ques
On 5/1/2011 19:01, Peter Rockett wrote:
> On 01/05/11 08:43, Keith Marshall wrote:
>> On 30/04/11 23:14, Kai Tietz wrote:
>>> long double (80-bit):
>>> digits for mantissa:64
>>> digit:18, min exp:-16381 (-4931 10th)
>>> max exp: 16384 (4932 10th)
>>> Epsilon:1.0842e-019
>>>
>>> Which means
Hello Bob and Kai!
On Sat, Apr 30, 2011 at 5:41 PM, Kai Tietz wrote:
> 2011/4/30 Bob Delaney :
>>
>> On Apr 30, 2011, at 10:15 AM, K. Frank wrote:
>>
>>> I get:
>>>
>>> C:\>gcc -o pow_test pow_test.c
>>>
>>> C:\>pow_test
>>> 2.20017764^3.10008882 = 11.521534126785718
2011/4/30 Kai Tietz :
> 2011/4/30 K. Frank :
>> Hello Kai!
>>
>> On Sat, Apr 30, 2011 at 5:51 AM, Kai Tietz wrote:
>>> 2011/4/30 Kai Tietz :
2011/4/30 Greg Chicares :
> On 2011-04-29 19:55Z, K. Frank wrote:
>>
>> By the way, could someone confirm that mingw does use msvcrt for
>>>
2011/4/30 K. Frank :
> Hello Kai!
>
> On Sat, Apr 30, 2011 at 5:51 AM, Kai Tietz wrote:
>> 2011/4/30 Kai Tietz :
>>> 2011/4/30 Greg Chicares :
On 2011-04-29 19:55Z, K. Frank wrote:
>
> By the way, could someone confirm that mingw does use msvcrt for
> sqrt and pow?
http:
Hello Kai!
On Sat, Apr 30, 2011 at 5:51 AM, Kai Tietz wrote:
> 2011/4/30 Kai Tietz :
>> 2011/4/30 Greg Chicares :
>>> On 2011-04-29 19:55Z, K. Frank wrote:
By the way, could someone confirm that mingw does use msvcrt for
sqrt and pow?
>>>
>>> http://cygwin.com/cgi-bin/cvsweb.cgi/sr
her common workstation
processors. Yet we are looking at software transcendental function
libraries.
James K Beard
-Original Message-
From: Greg Chicares [mailto:gchica...@sbcglobal.net]
Sent: Friday, April 29, 2011 7:38 PM
To: MinGW Users List
Cc: mingw64
Subject: Re: [Mingw-w64-public] [Mingw-u
2011/4/30 Kai Tietz :
> 2011/4/30 Greg Chicares :
>> On 2011-04-29 19:55Z, K. Frank wrote:
>>>
>>> By the way, could someone confirm that mingw does use msvcrt for
>>> sqrt and pow?
>>
>> http://cygwin.com/cgi-bin/cvsweb.cgi/src/winsup/mingw/mingwex/math/?cvsroot=src
>>
>> Looks to me like sqrt(dou
2011/4/30 Greg Chicares :
> On 2011-04-29 19:55Z, K. Frank wrote:
>>
>> By the way, could someone confirm that mingw does use msvcrt for
>> sqrt and pow?
>
> http://cygwin.com/cgi-bin/cvsweb.cgi/src/winsup/mingw/mingwex/math/?cvsroot=src
>
> Looks to me like sqrt(double) calls into msvcrt. But pow(
On 2011-04-29 19:55Z, K. Frank wrote:
>
> By the way, could someone confirm that mingw does use msvcrt for
> sqrt and pow?
http://cygwin.com/cgi-bin/cvsweb.cgi/src/winsup/mingw/mingwex/math/?cvsroot=src
Looks to me like sqrt(double) calls into msvcrt. But pow() is a
different story. Danny implem
.
James K Beard
-Original Message-
From: K. Frank [mailto:kfrank2...@gmail.com]
Sent: Friday, April 29, 2011 8:51 PM
To: mingw64; MinGW Users List
Subject: Re: [Mingw-w64-public] [Mingw-users] Math library discrepancies
that surprised me.
Hi Greg!
On Fri, Apr 29, 2011 at 7:38 PM, Greg Ch
Hi Greg!
On Fri, Apr 29, 2011 at 7:38 PM, Greg Chicares wrote:
> On 2011-04-29 19:55Z, K. Frank wrote:
>>
>> By the way, could someone confirm that mingw does use msvcrt for
>> sqrt and pow?
>
> http://cygwin.com/cgi-bin/cvsweb.cgi/src/winsup/mingw/mingwex/math/?cvsroot=src
>
> Looks to me like s
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