Pell's equation: Difference between revisions
→{{header|langur}}
Langurmonkey (talk | contribs) |
Langurmonkey (talk | contribs) |
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=={{header|langur}}==
{{trans|D}}
<syntaxhighlight lang="langur">val .fun =
val .solvePell =
val .x = trunc .n ^/ 2
var .y, .z, .r = .x, 1, .x
var .e1, .e2, .f1, .f2 = 1, 0, 0, 1
for {
.y = .r
.z = (.n - .y
.r = (.x + .y) \ .z
.e1, .e2 = .fun(.e1, .e2, .r)
.f1, .f2 = .fun(.f1, .f2, .r)
val .b, .a = .fun(.e2, .f2, .x)
if .a^2 - .n
}
}
val .C =
# format number string with commas
var .neg, .s = "", string .x
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val .x, .y = .solvePell(.n)
writeln $"x² - \.n;y² = 1 for:\n\tx = \.x:.C;\n\ty = \.y:.C;\n"
}
{{out}}
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