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”’l n ‚Ì•„†‚ðŽæ“¾‚·‚éB
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SGN(
n
)
sƒpƒ‰ƒ[ƒ^[t
n
int
float
–ß‚è’l
int or floatBŒ‹‰ÊB÷-1A0HB
—p—á
•Ï” B ‚ɕϔ A ‚Ì•„†‚ðÝ’è‚·‚éB
A = 4 B = SGN( A )