Rocksolid Light

Welcome to novaBBS (click a section below)

mail  files  register  newsreader  groups  login

Message-ID:  

"We came. We saw. We kicked its ass." -- Bill Murray, _Ghostbusters_

tech / sci.math / bard on trig....

SubjectAuthor
* bard on trig....Chris M. Thomasson
+* Re: bard on trig....Manu Raju
|`- Re: bard on trig....Chris M. Thomasson
+* Re: bard on trig....Bonita Montero
|`- Re: bard on trig....Chris M. Thomasson
`- Re: bard on trig....Chris M. Thomasson

1
bard on trig....

<u1va54$2v1v5$2@dont-email.me>

  copy mid

https://www.novabbs.com/tech/article-flat.php?id=132380&group=sci.math#132380

  copy link   Newsgroups: comp.lang.c++ sci.math
Path: i2pn2.org!i2pn.org!eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail
From: chris.m....@gmail.com (Chris M. Thomasson)
Newsgroups: comp.lang.c++,sci.math
Subject: bard on trig....
Date: Fri, 21 Apr 2023 17:35:48 -0700
Organization: A noiseless patient Spider
Lines: 6
Message-ID: <u1va54$2v1v5$2@dont-email.me>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Injection-Date: Sat, 22 Apr 2023 00:35:49 -0000 (UTC)
Injection-Info: dont-email.me; posting-host="1d00ff41a565fdf3de15766740df38a5";
logging-data="3114981"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18U1xEED1Ldfkh/+nm1lj04gNJ4775n1VM="
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101
Thunderbird/102.10.0
Cancel-Lock: sha1:SP6ppWpImh9aTxulG6xCqmLf0PI=
Content-Language: en-US
 by: Chris M. Thomasson - Sat, 22 Apr 2023 00:35 UTC

Humm... It tried to tell me that cos(0) does not equal sin(pi/2)... This
is bad:

https://i.ibb.co/DgtknZS/image.png

Humm...

Re: bard on trig....

<u1vija$342ou$1@dont-email.me>

  copy mid

https://www.novabbs.com/tech/article-flat.php?id=132389&group=sci.math#132389

  copy link   Newsgroups: comp.lang.c++ sci.math
Path: i2pn2.org!i2pn.org!eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail
From: MR...@invalid.invalid (Manu Raju)
Newsgroups: comp.lang.c++,sci.math
Subject: Re: bard on trig....
Date: Sat, 22 Apr 2023 03:56:03 +0100
Organization: Aioe.org NNTP Server
Lines: 14
Message-ID: <u1vija$342ou$1@dont-email.me>
References: <u1va54$2v1v5$2@dont-email.me>
MIME-Version: 1.0
Content-Type: text/plain;
Content-Transfer-Encoding: 7bit
Injection-Date: Sat, 22 Apr 2023 02:59:54 -0000 (UTC)
Injection-Info: dont-email.me; posting-host="54c49e4bf68e59a271bd7864ec723bed";
logging-data="3279646"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1961Vq1MYJ3EBf4vFJ2XUtMLdB+DiOfKjU="
Cancel-Lock: sha1:w2FLBaqwWpwJpjXOR1wKnf9Kc3E=
In-Reply-To: <u1va54$2v1v5$2@dont-email.me>
Content-Language: en-US
 by: Manu Raju - Sat, 22 Apr 2023 02:56 UTC

On 22/04/2023 01:35, Chris M. Thomasson wrote:
> Humm... It tried to tell me that cos(0) does not equal sin(pi/2)...
> This is bad:
>
> https://i.ibb.co/DgtknZS/image.png
>
> Humm...

Try this:

<https://i.imgur.com/6fDbiId.png>

Re: bard on trig....

<u2084g$377ga$3@dont-email.me>

  copy mid

https://www.novabbs.com/tech/article-flat.php?id=132409&group=sci.math#132409

  copy link   Newsgroups: comp.lang.c++ sci.math
Path: i2pn2.org!i2pn.org!eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail
From: Bonita.M...@gmail.com (Bonita Montero)
Newsgroups: comp.lang.c++,sci.math
Subject: Re: bard on trig....
Date: Sat, 22 Apr 2023 11:09:35 +0200
Organization: A noiseless patient Spider
Lines: 12
Message-ID: <u2084g$377ga$3@dont-email.me>
References: <u1va54$2v1v5$2@dont-email.me>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Injection-Date: Sat, 22 Apr 2023 09:07:28 -0000 (UTC)
Injection-Info: dont-email.me; posting-host="903446810de2c9d2ca776682f0087196";
logging-data="3382794"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18UhA1y6BoX9IHUqlh5z301VVtwfz3ZI84="
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101
Thunderbird/102.10.0
Cancel-Lock: sha1:AlEu3utmD9aOMxWX4Uioh/7YPbs=
Content-Language: de-DE
In-Reply-To: <u1va54$2v1v5$2@dont-email.me>
 by: Bonita Montero - Sat, 22 Apr 2023 09:09 UTC

Am 22.04.2023 um 02:35 schrieb Chris M. Thomasson:

> Humm... It tried to tell me that cos(0) does not equal sin(pi/2)... This
> is bad:
> https://i.ibb.co/DgtknZS/image.png
> Humm...

Depending on the implementation
bit_cast<int64_t>( sin( M_PI / 2 ) )
may be not equal to
bit_cast<int64_t>( cos( 0 ) ).

Re: bard on trig....

<u21dge$3dejc$1@dont-email.me>

  copy mid

https://www.novabbs.com/tech/article-flat.php?id=132442&group=sci.math#132442

  copy link   Newsgroups: comp.lang.c++ sci.math
Path: i2pn2.org!i2pn.org!paganini.bofh.team!eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail
From: chris.m....@gmail.com (Chris M. Thomasson)
Newsgroups: comp.lang.c++,sci.math
Subject: Re: bard on trig....
Date: Sat, 22 Apr 2023 12:45:17 -0700
Organization: A noiseless patient Spider
Lines: 16
Message-ID: <u21dge$3dejc$1@dont-email.me>
References: <u1va54$2v1v5$2@dont-email.me> <u1vija$342ou$1@dont-email.me>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Injection-Date: Sat, 22 Apr 2023 19:45:18 -0000 (UTC)
Injection-Info: dont-email.me; posting-host="1d00ff41a565fdf3de15766740df38a5";
logging-data="3586668"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18qeFuTws3vIWMg2+CHlvAcN/6NwYeNJMs="
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101
Thunderbird/102.10.0
Cancel-Lock: sha1:bVmsysPES35o7xDM6pPnz0/1NcI=
In-Reply-To: <u1vija$342ou$1@dont-email.me>
Content-Language: en-US
 by: Chris M. Thomasson - Sat, 22 Apr 2023 19:45 UTC

On 4/21/2023 7:56 PM, Manu Raju wrote:
> On 22/04/2023 01:35, Chris M. Thomasson wrote:
>> Humm... It tried to tell me that cos(0) does not equal sin(pi/2)...
>> This is bad:
>>
>> https://i.ibb.co/DgtknZS/image.png
>>
>> Humm...
>
> Try this:
>
> <https://i.imgur.com/6fDbiId.png>
>

It learned! Nice. :^D

Re: bard on trig....

<u21dpn$3dejc$2@dont-email.me>

  copy mid

https://www.novabbs.com/tech/article-flat.php?id=132444&group=sci.math#132444

  copy link   Newsgroups: comp.lang.c++ sci.math
Path: i2pn2.org!i2pn.org!eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail
From: chris.m....@gmail.com (Chris M. Thomasson)
Newsgroups: comp.lang.c++,sci.math
Subject: Re: bard on trig....
Date: Sat, 22 Apr 2023 12:50:14 -0700
Organization: A noiseless patient Spider
Lines: 20
Message-ID: <u21dpn$3dejc$2@dont-email.me>
References: <u1va54$2v1v5$2@dont-email.me> <u2084g$377ga$3@dont-email.me>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 8bit
Injection-Date: Sat, 22 Apr 2023 19:50:15 -0000 (UTC)
Injection-Info: dont-email.me; posting-host="1d00ff41a565fdf3de15766740df38a5";
logging-data="3586668"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX19BdUsFu6eEbNV8U9Ay4yxzrkjlcEd+h2k="
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101
Thunderbird/102.10.0
Cancel-Lock: sha1:4LXhFhBXY2ANbhBW5MYynkIo4ZE=
Content-Language: en-US
In-Reply-To: <u2084g$377ga$3@dont-email.me>
 by: Chris M. Thomasson - Sat, 22 Apr 2023 19:50 UTC

On 4/22/2023 2:09 AM, Bonita Montero wrote:
> Am 22.04.2023 um 02:35 schrieb Chris M. Thomasson:
>
>> Humm... It tried to tell me that cos(0) does not equal sin(pi/2)...
>> This is bad:
>> https://i.ibb.co/DgtknZS/image.png
>> Humm...
>
> Depending on the implementation
>     bit_cast<int64_t>( sin( M_PI / 2 ) )
> may be not equal to
>     bit_cast<int64_t>( cos( 0 ) ).
>

I was mostly interested in the mathematical truth that cos(0) =
sin(pi/2)... ;^)

Wrt degrees, pi/2 = 90 degrees.

So, I was not really interested in precision issues.

Re: bard on trig....

<u2d7g4$1qlc9$1@dont-email.me>

  copy mid

https://www.novabbs.com/tech/article-flat.php?id=132996&group=sci.math#132996

  copy link   Newsgroups: comp.lang.c++ sci.math
Path: i2pn2.org!i2pn.org!eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail
From: chris.m....@gmail.com (Chris M. Thomasson)
Newsgroups: comp.lang.c++,sci.math
Subject: Re: bard on trig....
Date: Thu, 27 Apr 2023 00:16:20 -0700
Organization: A noiseless patient Spider
Lines: 10
Message-ID: <u2d7g4$1qlc9$1@dont-email.me>
References: <u1va54$2v1v5$2@dont-email.me>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Injection-Date: Thu, 27 Apr 2023 07:16:20 -0000 (UTC)
Injection-Info: dont-email.me; posting-host="1e25cf2fc10f7d8b04e945246b5b4f82";
logging-data="1922441"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/g5SiC+QO8YLf2lfpOOl0WlvN4qVIYveQ="
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101
Thunderbird/102.10.0
Cancel-Lock: sha1:JLxXfqwbhe1sswq+Oxc/3zvJXT8=
Content-Language: en-US
In-Reply-To: <u1va54$2v1v5$2@dont-email.me>
 by: Chris M. Thomasson - Thu, 27 Apr 2023 07:16 UTC

On 4/21/2023 5:35 PM, Chris M. Thomasson wrote:
> Humm... It tried to tell me that cos(0) does not equal sin(pi/2)... This
> is bad:
>
> https://i.ibb.co/DgtknZS/image.png
>
> Humm...

chat gpt knows what the versine function is! Nice. Shit. When is the
last time you used that one?

1
server_pubkey.txt

rocksolid light 0.9.8
clearnet tor