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14 lines
218 B
Nim
14 lines
218 B
Nim
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func floorLog2* (x : int) : int =
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var k = -1
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var y = x
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while (y > 0):
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k += 1
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y = y shr 1
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return k
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func ceilingLog2* (x : int) : int =
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if (x==0):
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return -1
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else:
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return (floorLog2(x-1) + 1)
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