Horton

Re: Ryu floating point output patch

Andres Freund <andres@anarazel.de>

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From: Andres Freund <andres@anarazel.de>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Andrew Gierth <andrew@tao11.riddles.org.uk>, Thomas Munro <thomas.munro@enterprisedb.com>, Pg Hackers <pgsql-hackers@postgresql.org>
Date: 2018-12-14T18:53:01Z
Lists: pgsql-hackers 
Hi,

On 2018-12-14 13:47:53 -0500, Tom Lane wrote:
> Andres Freund <andres@anarazel.de> writes:
> > It's been absorbed into MSVC's standard library and a bunch of other
> > projects, so there's certainly some other prominent adoption.
> 
> If we think that's going on, maybe we should just sit tight till glibc
> absorbs it.

All the stuff it'll have to put above it will make it slower
anyway. It's not like this'll be a feature that's hard to rip out if all
libc's have fast roundtrip safe conversion routines, or if something
better comes along.

Greetings,

Andres Freund

Commits

  1. Provide an extra-float-digits setting for pg_dump / pg_dumpall

  2. Change floating-point output format for improved performance.

  3. Use strtof() and not strtod() for float4 input.