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September Morn Update

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Ingy döt Net 2019-09-12 10:33:56 -07:00
parent 4e2d22a71d
commit aac6731f2c
6856 changed files with 141342 additions and 21127 deletions
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14
Task/Euler-method/Futhark/euler-method.futhark
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@ -1,16 +1,14 @@
import "futlib/math"
fun analytic(t0: f64) (time: f64): f64 =
let analytic(t0: f64) (time: f64): f64 =
20.0 + (t0 - 20.0) * f64.exp(-0.07*time)
fun cooling(_time: f64) (temperature: f64): f64 =
let cooling(_time: f64) (temperature: f64): f64 =
-0.07 * (temperature-20.0)
fun main(t0: f64) (a: f64) (b: f64) (h: f64): []f64 =
let steps = i32((b-a)/h)
let main(t0: f64) (a: f64) (b: f64) (h: f64): []f64 =
let steps = i32.f64 ((b-a)/h)
let temps = replicate steps 0.0
loop ((t,temps)=(t0,temps)) = for i < steps do
let x = a + f64(i) * h
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,
temps)