>These days, Intel and AMD put fairly little effort into making x87 instructions... | Hacker News

Hacker Newsnew | past | comments | ask | show | jobs | submit

		gruez on May 17, 2020 \| parent \| context \| favorite \| on: Extracting ROM constants from the 8087 math coproc... >These days, Intel and AMD put fairly little effort into making x87 instructions fast, because code that cares about floating point performance use AVX instructions. AFAIK x87 instructions were removed/deprecated in x86_64

vardump on May 17, 2020 [–]

AMD64 (x86_64) can still execute x87 instructions. Not much point, though, unless you need 80-bit precision.

SSE / AVX just performs so much better.

userbinator on May 17, 2020 | [–]

Not much point, though, unless you need 80-bit precision.

Precisely what it's good for.

Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact