On 25/06/2019 16:22, Roland Scheidegger wrote:
> Looks good to me, albeit it's potentially minimally slower, so I'm
> wondering if the higher precision is actually useful?
It gets you an extra bit, and is necessary if you want to reach 0.5 ULP
(otherwise it never gets there.)
Anyway, it's still
Looks good to me, albeit it's potentially minimally slower, so I'm
wondering if the higher precision is actually useful?
I guess though the last two steps could use lp_build_fmuladd?
Reviewed-by: Roland Scheidegger
Am 25.06.19 um 11:17 schrieb Jose Fonseca:
> Use the alternative more accurate
Use the alternative more accurate expression from
https://en.wikipedia.org/wiki/Division_algorithm#Newton%E2%80%93Raphson_division
Tested by enabling this code path, and running gloss mesa demo.
---
src/gallium/auxiliary/gallivm/lp_bld_arit.c | 9 +
1 file changed, 5 insertions(+), 4
