Difference between revisions of "Programming:Logarithm"
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Latest revision as of 15:46, 18 April 2011
Log of base 2
; input: hl (unsigned) ; output: a = log2(hl) (rounded down and from -1 to 15) (8-bit integer signed) log2: ld a, 16 scf log2loop: adc hl, hl dec a jr nc, log2loop ret
