Pseudo-random numbers/Xorshift star: Difference between revisions
Pseudo-random numbers/Xorshift star (view source)
Revision as of 16:10, 14 August 2020
, 3 years ago→{{header|Factor}}: restrict seed to positive integers
(Realize in F#) |
(→{{header|Factor}}: restrict seed to positive integers) |
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CONSTANT: const 0x2545F4914F6CDD1D
! Restrict seed value to positive integers.
TUPLE: xorshift* state ;▼
PREDICATE: positive < integer 0 > ;
ERROR: seed-nonpositive seed ;
▲TUPLE: xorshift* { state positive initial: 1 } ;
: <xorshift*> ( seed -- xorshift* )
dup positive? [ seed-nonpositive ] unless
mask64 bitand xorshift* boa ;
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