ES2 MUD LIB :: 東方故事二(ES2) 天朝帝國 mudlib 瀏覽展示
/doc/efuns/sqrt
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sqrt() - returns the square root of a float
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float sqrt( float f );
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sqrt() returns the non-negative square root of its argument,
`f'. The value of `f' must not be negative.
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exp(3), log(3), pow(3)
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