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mask! shortening #6

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jamesbowman opened this issue Dec 4, 2017 · 0 comments
Open

mask! shortening #6

jamesbowman opened this issue Dec 4, 2017 · 0 comments

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@jamesbowman
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: mask! ( dest1 opcode mask -- instruction )
rot over invert and rot rot and or ; \ dest1&!mask src&mask or

can be:

>r over xor r> and xor ;

demonstration:

: x rot over invert and rot rot and or ;  ok
: y >r over xor r> and xor ;   ok
aaaa bbbb 0f0f x . ABAB  ok
aaaa bbbb 0f0f y . ABAB  ok
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