At Wed, 16 Sep 2020 12:27:09 +0500, "Andrey M. Borodin" <x4...@yandex-team.ru> wrote in > I was thinking that machine epsilon is near 1e-300, but I was > wrong. It's actually near 1e-15.
FWIW, the mantissa of double is effectively 52+1 bits, about 15.9 digits. so 1+(1e-16) is basically indistincitve from 1+(2e-16). Actually two double precisions 1+2e-16 and 1+3e-16 are indistinctive from each other. > Actually, I just want to understand what changes between v18 and v19 changed > on-page order of items. I look into patch diff and cannot figure it out. > There are only logging changes. How this affects scan? FWIW, I saw the same symptom by my another patch after adding a value to POINT_TBL. (But I didn't pursue the cause further..) regards. -- Kyotaro Horiguchi NTT Open Source Software Center
