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| Newsgroups | comp.misc |
|---|---|
| From | Eric Pozharski <whynot@pozharski.name> |
| Subject | Re: Calculator Accuracy |
| References | (1 earlier) <mtHav.235783$vM2.115843@fx18.am4> <83k39w1tnl.fsf@example.com> <lkfom3$7ui$1@speranza.aioe.org> <slrnlmphuk.12h.whynot@orphan.zombinet> <7zwqduj07r.fsf@example.com> |
| Message-ID | <slrnlmreqo.6fi.whynot@orphan.zombinet> (permalink) |
| Date | 2014-05-10 08:38 +0300 |
| Organization | SunSITE.dk - Supporting Open source |
with <7zwqduj07r.fsf@example.com> David Hume wrote:
> Eric Pozharski <whynot@pozharski.name> writes:
>> with <lkfom3$7ui$1@speranza.aioe.org> Hils wrote:
>>> [1] -7.105427e-15
Blame Hils, not me.
*SKIP*
>> libc, maybe:
>> % perl -MMath::Trig -wle '
>> print rad2deg( asin acos atan tan cos sin deg2rad 45 ) - 45'
>> 7.105427357601e-15
> These aren't the same tests as having the calculator in degrees mode,
> because in these tests when the result of sine is passed to cosine it
> is treated as radians.
Then -- Viva Radians!
% perl -MMath::Trig -wle '
sub x_sin { sin deg2rad shift };
sub x_asin { rad2deg asin shift };
sub x_cos { cos deg2rad shift };
sub x_acos { rad2deg acos shift };
sub x_tan { tan deg2rad shift };
sub x_atan { rad2deg atan shift };
print +( x_asin x_acos x_tan x_atan x_cos x_sin 45 ) - 45'
4.6604498038505e-11
Now I'm realy interested how much precision I'll need to beat windopws
calculator with Math::BigFloat.
--
Torvalds' goal for Linux is very simple: World Domination
Stallman's goal for GNU is even simpler: Freedom
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Calculator Accuracy Gordon Henderson <gordon+usenet@drogon.net> - 2014-05-08 07:00 +0000
Re: Calculator Accuracy David Hume <David.Hume@example.com> - 2014-05-08 08:39 +0100
Re: Calculator Accuracy Andy Burns <usenet.feb2014@adslpipe.co.uk> - 2014-05-08 09:14 +0100
Re: Calculator Accuracy Andy Burns <usenet.feb2014@adslpipe.co.uk> - 2014-05-12 19:02 +0100
Re: Calculator Accuracy "BartC" <bc@freeuk.com> - 2014-05-08 09:43 +0100
Re: Calculator Accuracy Tim Streater <timstreater@greenbee.net> - 2014-05-08 09:53 +0100
Re: Calculator Accuracy "BartC" <bc@freeuk.com> - 2014-05-08 10:22 +0100
Re: Calculator Accuracy David Hume <David.Hume@example.com> - 2014-05-08 12:17 +0100
Re: Calculator Accuracy RS Wood <rsw@therandymon.com> - 2014-05-08 14:09 +0000
Re: Calculator Accuracy David Hume <David.Hume@example.com> - 2014-05-08 16:04 +0100
Re: Calculator Accuracy Rich <rich@example.com> - 2014-05-08 16:49 +0000
Re: Calculator Accuracy Rich <rich@example.com> - 2014-05-09 00:03 +0000
Re: Calculator Accuracy Rich <rich@example.com> - 2014-05-09 00:10 +0000
Re: Calculator Accuracy RS Wood <rsw@therandymon.com> - 2014-05-09 21:32 +0000
Re: Calculator Accuracy Rich <rich@example.com> - 2014-05-10 03:30 +0000
Re: Calculator Accuracy "G. Paul Ziemba" <paul+usenet@w6yx.stanford.edu> - 2014-05-09 03:43 +0000
Re: Calculator Accuracy David Hume <David.Hume@example.com> - 2014-05-08 10:55 +0100
Re: Calculator Accuracy "BartC" <bc@freeuk.com> - 2014-05-08 11:23 +0100
Re: Calculator Accuracy Hils <hils@saynotospam.net> - 2014-05-08 12:09 +0100
Re: Calculator Accuracy Hils <hils@saynotospam.net> - 2014-05-08 23:02 +0100
Re: Calculator Accuracy Marc Auslander <marcslists@gmail.NOSPAM.com> - 2014-05-08 19:51 -0400
Re: Calculator Accuracy Will Honea <whonea@whonea.net> - 2014-05-08 18:19 -0600
Re: Calculator Accuracy Eric Pozharski <whynot@pozharski.name> - 2014-05-09 15:19 +0300
Re: Calculator Accuracy David Hume <David.Hume@example.com> - 2014-05-09 19:06 +0100
Re: Calculator Accuracy Eric Pozharski <whynot@pozharski.name> - 2014-05-10 08:38 +0300
Re: Calculator Accuracy Eric Pozharski <whynot@pozharski.name> - 2014-05-12 09:30 +0300
Re: Calculator Accuracy David Hume <David.Hume@example.com> - 2014-05-10 00:00 +0100
Re: Calculator Accuracy Rich <rich@example.com> - 2014-05-08 11:40 +0000
Re: Calculator Accuracy Rich <rich@example.com> - 2014-05-08 11:32 +0000
Re: Calculator Accuracy Anssi Saari <as@sci.fi> - 2014-05-08 20:20 +0300
Re: Calculator Accuracy Gordon Henderson <gordon+usenet@drogon.net> - 2014-05-08 17:40 +0000
Re: Calculator Accuracy David Hume <David.Hume@example.com> - 2014-05-09 08:43 +0100
Re: Calculator Accuracy Rich <rich@example.com> - 2014-05-09 10:42 +0000
Re: Calculator Accuracy Whiskers <catwheezel@operamail.com> - 2014-05-09 21:56 +0100
Re: Calculator Accuracy Geoff Clare <geoff@clare.See-My-Signature.invalid> - 2014-05-12 13:50 +0100
Re: Calculator Accuracy Caecilius <nospam@spamless.invalid> - 2014-05-08 19:34 +0100
Re: Calculator Accuracy Caecilius <nospam@spamless.invalid> - 2014-05-08 19:38 +0100
Re: Calculator Accuracy Hils <hils@saynotospam.net> - 2014-05-08 22:06 +0100
Re: Calculator Accuracy Paul Sture <nospam@sture.ch> - 2014-05-10 21:24 +0200
Re: Calculator Accuracy Lewis <g.kreme@gmail.com.dontsendmecopies> - 2014-05-11 16:22 +0000
Re: Calculator Accuracy Will Honea <whonea@whonea.net> - 2014-05-11 15:41 -0600
Re: Calculator Accuracy Tim Streater <timstreater@greenbee.net> - 2014-05-11 23:02 +0100
Re: Calculator Accuracy David Harmon <source@netcom.com> - 2014-05-12 18:20 -0700
Re: Calculator Accuracy Yeechang Lee <ylee@pobox.com> - 2014-07-25 20:26 -0700
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