Revision as of 21:23, 20 July 2019 (view source) rosettacode>Athas (→‎{{header\|Futhark}}) ← Older edit		Revision as of 21:24, 20 July 2019 (view source) rosettacode>Athas (→‎{{header\|Futhark}}) Newer edit →
Line 1,089: <lang Futhark> ~~fun~~let analytic(t0: f64) (time: f64): f64 =▼ ~~import "futlib/math"~~ ▲fun analytic(t0: f64) (time: f64): f64 = 20.0 + (t0 - 20.0) * f64.exp(-0.07time) ~~fun~~let cooling(_time: f64) (temperature: f64): f64 = -0.07 (temperature-20.0) ~~fun~~let main(t0: f64) (a: f64) (b: f64) (h: f64): []f64 = let steps = i32.f64 ((b-a)/h) let temps = replicate steps 0.0 let (_,temps) = loop ((t,temps)=(t0,temps)~~) =~~ for i < steps do let x = a + f64(.i32 i) * h let temps[i] = f64.abs(t-analytic t0 x) in (t + h * cooling x t,

Euler method (view source)