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# Scilab, cald function SilLAwNeD  Oct 16th, 2018 105 Never
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1. function [d] = cald(T, y)
2.     exec('**/rich.sci', -1)
3.
4.     tol = 1e-12
5.
6.     n = size(y, 1)
7.     a = zeros(n, 1)
8.     b = zeros(n, 1)
9.     c = zeros(n, 1)
10.     d = zeros(n, 1)
11.     u = zeros(n, 1)
12.
13.     h = zeros(n, 1)
14.     // vecteur l pour contenir la différence y(i+1)-y(i)
15.     l = zeros(n, 1)
16.
17.     h = T(2:n) - T(1:n-1)
18.     l(1:n-1) = y(2:n) - y(1:n-1) // l(n) = 0 car de toute façon c(n) = 0
19.
20.     for i = 1:n-1
21.         if (abs(h(i)) < tol)then
22.             error("h(i) trop petit")
23.         end
24.         // a(1) = 0
25.         a(i+1) = 1 / h(i)
26.         // c(n) = 0
27.         c(i) = 1 / h(i)
28.     end
29.
30.     b = 2 * a(1:n) + 2 * c(1:n)
31.     u(1) = l(1) .* c(1) .* c(1)
32.     u(2:n) = l(1:n-1) .* (a(2:n).*a(2:n)) + l(2:n) .* (c(2:n).*c(2:n))
33.
34.     d = rich(a, b, c, u)
35.
36. endfunction
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