RosettaCodeData/Task/Map-range/D/map-range.d

14 lines
348 B
D

double mapRange(in double[] a, in double[] b, in double s)
pure nothrow @nogc {
return b[0] + ((s - a[0]) * (b[1] - b[0]) / (a[1] - a[0]));
}
void main() {
import std.stdio;
immutable r1 = [0.0, 10.0];
immutable r2 = [-1.0, 0.0];
foreach (immutable s; 0 .. 11)
writefln("%2d maps to %5.2f", s, mapRange(r1, r2, s));
}