From: "Jeffrey R. Carter" <spam.jrcarter.not@spam.acm.org>
Subject: Re: Inferring array index type from array object
Date: Tue, 29 Jun 2010 14:18:08 -0700
Date: 2010-06-29T14:18:08-07:00 [thread overview]
Message-ID: <i0do3a$ml1$1@tornado.tornevall.net> (raw)
In-Reply-To: <Xns9DA6AC2A2C8BWarrensBlatherings@81.169.183.62>
On 06/29/2010 01:55 PM, Warren wrote:
>
> gsl_complex
> gsl_complex_inverse (gsl_complex a)
> { /* z=1/a */
> double s = 1.0 / gsl_complex_abs (a);
>
> gsl_complex z;
> GSL_SET_COMPLEX (&z, (GSL_REAL (a) * s) * s, -(GSL_IMAG (a) * s) * s);
> return z;
> }
IIUC, the multiplicative inverse of z is
(z*)/(|z|**2)
where z* is the conjugate of z. Maybe this is the same thing.
--
Jeff Carter
"Blessed is just about anyone with a vested interest in the status quo."
Monty Python's Life of Brian
73
next prev parent reply other threads:[~2010-06-29 21:18 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-23 7:30 Inferring array index type from array object Maciej Sobczak
2010-06-23 8:01 ` Dmitry A. Kazakov
2010-06-23 9:03 ` J-P. Rosen
2010-06-23 12:24 ` Georg Bauhaus
2010-06-23 12:52 ` J-P. Rosen
2010-06-23 19:09 ` Simon Wright
2010-06-24 7:25 ` Georg Bauhaus
2010-06-23 14:38 ` Robert A Duff
2010-06-23 15:17 ` J-P. Rosen
2010-06-23 17:17 ` Robert A Duff
2010-06-24 6:16 ` J-P. Rosen
2010-06-23 12:13 ` Niklas Holsti
2010-06-23 14:27 ` Peter C. Chapin
2010-06-23 20:24 ` Niklas Holsti
2010-06-23 16:33 ` Warren
2010-06-23 17:49 ` Dmitry A. Kazakov
2010-06-23 18:45 ` Warren
2010-06-23 20:39 ` Niklas Holsti
2010-06-28 13:44 ` Warren
2010-06-28 22:18 ` Niklas Holsti
2010-06-29 1:49 ` Adam Beneschan
2010-06-29 2:10 ` (see below)
2010-06-29 16:56 ` Warren
2010-06-29 17:50 ` John B. Matthews
2010-06-29 19:31 ` Warren
2010-06-29 20:06 ` Jeffrey R. Carter
2010-06-29 20:16 ` Warren
2010-06-29 20:22 ` Adam Beneschan
2010-06-29 20:39 ` Dmitry A. Kazakov
2010-06-29 20:55 ` Warren
2010-06-29 21:00 ` Warren
2010-06-29 21:47 ` John B. Matthews
2010-06-29 21:52 ` Damien Carbonne
2010-06-29 22:22 ` Adam Beneschan
2010-06-30 16:43 ` Warren
2010-06-29 21:18 ` Jeffrey R. Carter [this message]
2010-06-30 5:01 ` Simon Wright
2010-06-30 14:29 ` Adam Beneschan
2010-06-29 20:28 ` Damien Carbonne
2010-06-29 21:20 ` John B. Matthews
2010-06-23 13:12 ` Gautier write-only
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