generate ( sfmt -- )

Vocabulary

random.sfmt.private

Inputs

sfmt

an object

Outputs

None

Definition

IN: random.sfmt.private

GENERIC: generate ( sfmt -- )

Methods

USING: accessors math random.sfmt.private sequences
sequences.private ;

M:: sfmt generate ( sfmt -- )
    sfmt state>> :> state sfmt uint-4-array>> :> array state n>>
    2 - array nth state r1<< state n>> 1 - array nth state r2<<
    state m>> :> m state n>> :> n state mask>> :> mask n m -
    >fixnum <iota> [| i |
        i array nth-unsafe i m + array nth-unsafe
        mask state r1>> state r2>> formula
        :> r r i array set-nth-unsafe state r2>> state r1<<
        r state r2<<
    ] each m 1 - <iota> [
        n m - 1 + + >fixnum :> i i array nth-unsafe m n - i +
        array nth-unsafe mask state r1>> state r2>> formula
        :> r r i array set-nth-unsafe state r2>> state r1<<
        r state r2<<
    ] each 0 state index<< ;