Re: Interval aggregate regression failure (expected seems

Greg Stark <gsstark@mit.edu>

From: Greg Stark <gsstark@mit.edu>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Michael Paesold <mpaesold@gmx.at>, Michael Glaesemann <grzm@myrealbox.com>, pgsql-hackers@postgresql.org
Date: 2005-11-07T19:25:35Z
Lists: pgsql-hackers
c.f.:


`-ffloat-store'
     Do not store floating point variables in registers, and inhibit
     other options that might change whether a floating point value is
     taken from a register or memory.

     This option prevents undesirable excess precision on machines such
     as the 68000 where the floating registers (of the 68881) keep more
     precision than a `double' is supposed to have.  Similarly for the
     x86 architecture.  For most programs, the excess precision does
     only good, but a few programs rely on the precise definition of
     IEEE floating point.  Use `-ffloat-store' for such programs, after
     modifying them to store all pertinent intermediate computations
     into variables.

-- 
greg