5 ms·

-ffast-math might be a bit cheating here, for scientific work it's not always applicable. Unless rustc uses fast math by default? That would be weird. It's sur

by simias 10y ago

-ffast-math might be a bit cheating here, for scientific work it's not always applicable. Unless rustc uses fast math by default? That would be weird. It's surprising that gcc does such a poor job at -O3 though.

kibwen 10y ago
Rust doesn't even have a way to turn on fastmath, AFAIK.
- dbaupp 10y ago
  It does, for individual operations: https://doc.rust-lang.org/std/?search=fast https://doc.rust-lang.org/std/?search=fast