Horton

Re: pgsql: Add support for hyperbolic functions, as well as log10().

Andrew Dunstan <andrew.dunstan@2ndquadrant.com>

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From: Andrew Dunstan <andrew.dunstan@2ndquadrant.com>
To: Tom Lane <tgl@sss.pgh.pa.us>, Dean Rasheed <dean.a.rasheed@gmail.com>
Cc: Michael Paquier <michael@paquier.xyz>, PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>, laetitia.avrot@gmail.com
Date: 2019-03-14T12:54:49Z
Lists: pgsql-hackers 
On 3/14/19 12:41 AM, Tom Lane wrote:
> Dean Rasheed <dean.a.rasheed@gmail.com> writes:
>> I'm amazed that jacana's asinh() returned -0 for an input of +0.
> Even more amusingly, it returns NaN for acosh('infinity'), cf
> https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=jacana&dt=2019-03-14%2003%3A00%3A34
>
> Presumably that means they calculated "infinity - infinity" at some
> point, but why?
>
> So far, no other failures ...
>
> 			



I have replicated this on my Msys2 test system.


I assume it's a bug in the mingw math library. I think jacana is the
only currently reporting mingw member :-( The MSVC members appear to be
happy.


I have several releases of the mingw64 toolsets installed on jacana -
I'll try an earlier version to see if it makes a difference.


cheers


andrew


-- 

Andrew Dunstan                https://www.2ndQuadrant.com
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

Commits

  1. Further adjust the tests for the hyperbolic functions.

  2. Adjust the tests for the hyperbolic functions.

  3. Rethink how to test the hyperbolic functions.

  4. Add support for hyperbolic functions, as well as log10().