Find first and last set bit of a long integer: Difference between revisions
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(Find first and last set bit of a long integer en BASIC256) |
(→{{header|Wren}}: Now uses new core library method.) |
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{{libheader|Wren-big}} |
{{libheader|Wren-big}} |
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{{libheader|Wren-fmt}} |
{{libheader|Wren-fmt}} |
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{{libheader|Wren-math}} |
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<lang ecmascript>import "/big" for BigInt |
<lang ecmascript>import "/big" for BigInt |
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import "/fmt" for Fmt |
import "/fmt" for Fmt |
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import "/math" for Math |
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var rupb = Fn.new { |x| (x is BigInt) ? x.bitLength - 1 : |
var rupb = Fn.new { |x| (x is BigInt) ? x.bitLength - 1 : x.log2.floor } |
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var rlwb = Fn.new { |x| rupb.call(x & -x) } |
var rlwb = Fn.new { |x| rupb.call(x & -x) } |
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1302^6 = 4,871,535,877,925,849,664 rupb: 62 rlwb: 6 |
1302^6 = 4,871,535,877,925,849,664 rupb: 62 rlwb: 6 |
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</pre> |
</pre> |
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=={{header|Yabasic}}== |
=={{header|Yabasic}}== |
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