| From: | Joseph Koshakow <koshy44(at)gmail(dot)com> |
|---|---|
| To: | Nathan Bossart <nathandbossart(at)gmail(dot)com> |
| Cc: | Alexander Lakhin <exclusion(at)gmail(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Andres Freund <andres(at)anarazel(dot)de> |
| Subject: | Re: Remove dependence on integer wrapping |
| Date: | 2024-07-15 23:55:22 |
| Message-ID: | CAAvxfHdYnTB7BjkRSPO8__wxB3880TiYD-TVU2uW8q1KbzymPg@mail.gmail.com |
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| Lists: | pgsql-hackers |
Thanks for the review!
On Mon, Jul 15, 2024 at 11:31 AM Nathan Bossart <nathandbossart(at)gmail(dot)com>
wrote:
>
> I took a closer look at 0002.
>
> I'm curious why you aren't using float8_mul/float8_div here, i.e.,
>
> fresult = rint(float8_mul((float8) c, f));
> fresult = rint(float8_div((float8) c, f));
I wrongly assumed that it was only meant to be used to implement
multiplication and division for the built-in float types. I've updated
the patch to use these functions.
> nitpick: I'd name the functions something like "cash_mul_float8" and
> "cash_div_float8". Perhaps we could also add functions like
> "cash_mul_int64"
Done in the updated patch.
> and "cash_sub_int64"
Did you mean "cash_div_int64"? There's only a single function that
subtracts cash and an integer, but there's multiple functions that
divide cash by an integer. I've added a "cash_div_int64" in the updated
patch.
The other patches, 0001, 0003, and 0004 are unchanged but have their
version number incremented.
Thanks,
Joe Koshakow
| Attachment | Content-Type | Size |
|---|---|---|
| v9-0003-Remove-overflow-from-array_set_slice.patch | text/x-patch | 2.9 KB |
| v9-0001-Remove-dependence-on-integer-wrapping.patch | text/x-patch | 13.5 KB |
| v9-0004-Remove-dependence-on-integer-wrapping-for-jsonb.patch | text/x-patch | 2.4 KB |
| v9-0002-Handle-overflow-in-money-arithmetic.patch | text/x-patch | 12.3 KB |
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