Gaussian primes: Difference between revisions
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=={{header|FreeBASIC}}==
<syntaxhighlight lang="vbnet">'#include "isprime.bas"
Function isGaussianPrime(realPart As Integer, imagPart As Integer) As Boolean
Dim As Integer norm = realPart * realPart + imagPart * imagPart
If realPart = 0 Andalso imagPart <> 0 Then
Return (Abs(imagPart) Mod 4 = 3) Andalso isPrime(Abs(imagPart))
Elseif imagPart = 0 And realPart <> 0 Then
Return (Abs(realPart) Mod 4 = 3) Andalso isPrime(Abs(realPart))
Else
Return isPrime(norm)
End If
End Function
Print "Gaussian primes within 10 of the origin on the complex plane:"
Dim As Integer i, j, norm, radius = 50
For i = -radius To radius
For j = -radius To radius
norm = i * i + j * j
If norm < 100 Andalso isGaussianPrime(i, j) Then
Print Using "##"; i;
Print Iif(j >= 0, "+", "");
Print j & "i",
End If
Next j
Next i
Sleep</syntaxhighlight>
=={{header|J}}==
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