next-power-of-2 ( m -- n )
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Vocabulary
math

Inputs
ma non-negative integer


Outputs
nan integer


Word description
Outputs the smallest power of 2 greater than or equal to m. The output value is always at least 2.

Definition
USING: kernel ;

IN: math

: next-power-of-2 ( m -- n )
dup 2 <= [ drop 2 ] [ 1 - log2 1 + 2^ ] if ; inline