aparler/RosettaCodeData
1
0
Fork 0
Code Issues 12 Pull requests 3 Projects Releases Packages Wiki Activity Actions

Data commit

Browse source
This commit is contained in:
Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
199093 changed files with 3378972 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

29
Task/Twin-primes/XPL0/twin-primes.xpl0 Normal file
View file

@ -0,0 +1,29 @@
func IsPrime(N); \Return 'true' if N is prime
int N, I;
[if N <= 2 then return N = 2;
if (N&1) = 0 then \even >2\ return false;
for I:= 3 to sqrt(N) do
[if rem(N/I) = 0 then return false;
I:= I+1;
];
return true;
];
func Twins(Limit);
int Limit, C, N;
[C:= 0; N:= 3;
repeat if IsPrime(N) then
loop [N:= N+2;
if N >= Limit then return C;
if not IsPrime(N) then quit;
C:= C+1;
];
N:= N+2;
until N >= Limit;
return C;
];
[IntOut(0, Twins(100_000)); CrLf(0);
IntOut(0, Twins(10_000_000)); CrLf(0);
IntOut(0, Twins(100_000_000)); CrLf(0);
]