public inbox for [email protected]  

help / color / mirror / Atom feed

From: Bruno Wolff III <[email protected]>
To: [email protected]
Subject: atan2 documentation bugs for 7.3 and 7.2
Date: Sat, 7 Sep 2002 14:19:41 -0500
Message-ID: <[email protected]> (raw)

I think that I reported this to the wrong place. I seem to remember now
that documentation problems should go to the docs list.

----- Forwarded message from Bruno Wolff III <[email protected]> -----

Date: Thu, 5 Sep 2002 23:59:48 -0500
From: Bruno Wolff III <[email protected]>
To: [email protected]
Subject: atan2 documentation bugs for 7.3 and 7.2
Mail-Followup-To: [email protected]
User-Agent: Mutt/1.3.25i

In the section on mathematical functions the following is given for atan2:
atan2(x, y) inverse tangent of a/x

I believe the correct version should either be:
atan2(y, x) inverse tangent of y/x
or
atan2(x, y) inverse tangent of x/y

I beleive the documentation was also wrong for 7.2 where it was:
atan2(x, y) inverse tangent of y/x

The postgres functions seems to be the same as glibc function of the same
name when has the following man information:
       double atan2(double y, double x);

DESCRIPTION
       The atan2() function calculates the arc tangent of the two
       variables x and y.  It is similar to calculating  the  arc
       tangent  of y / x, except that the signs of both arguments
       are used to determine the quadrant of the result.

---------------------------(end of broadcast)---------------------------
TIP 4: Don't 'kill -9' the postmaster

----- End forwarded message -----

reply

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Reply to all the recipients using the --to and --cc options:
  reply via email

  To: [email protected]
  Cc: [email protected]
  Subject: Re: atan2 documentation bugs for 7.3 and 7.2
  In-Reply-To: <[email protected]>

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

This inbox is served by agora; see mirroring instructions
for how to clone and mirror all data and code used for this inbox