Date: Wed, 13 Mar 2019 11:21:59 +0900
From: Michael Paquier <michael@paquier.xyz>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Postgres hackers <pgsql-hackers@lists.postgresql.org>
Subject: Re: pgsql: Add support for hyperbolic functions, as well as log10().
Message-ID: <20190313022159.GR13812@paquier.xyz>
References: <E1h3nUY-0000sM-Vf@gemulon.postgresql.org>
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On Tue, Mar 12, 2019 at 07:55:14PM +0000, Tom Lane wrote:
> Add support for hyperbolic functions, as well as log10().
>=20
> The SQL:2016 standard adds support for the hyperbolic functions
> sinh(), cosh(), and tanh().  POSIX has long required libm to
> provide those functions as well as their inverses asinh(),
> acosh(), atanh().  Hence, let's just expose the libm functions
> to the SQL level.  As with the trig functions, we only implement
> versions for float8, not numeric.

jacana is not a fan of this commit, and failed on float8:
https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=3Djacana&dt=3D2019-=
03-13%2000%3A00%3A27
@@ -476,7 +476,7 @@
SELECT asinh(float8 '0');
 asinh
-------
-     0
+    -0
(1 row)
--
Michael

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