On 2023-04-24 12:03, Jakub Jelinek wrote:
On Thu, Apr 20, 2023 at 01:57:55PM -0400, Siddhesh Poyarekar wrote:
Similarly for other functions which have other ranges, perhaps not with so
nice round numbers. Say asin has [-pi/2, pi/2] range, those numbers aren't
exactly representable, but is it any worse to round those values to -inf or
+inf or worse give something 1-5 ulps further from that interval comparing
to other 1-5ulps errors?
I've extended my hack^^^test to include sqrt and this time it seems
that the boundary in that case holds even for non-standard rounding modes
for glibc:
IIRC the standard _requires_ sqrt to be correctly rounded.
Sid
