Add algorithm
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README.MD
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README.MD
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@ -112,4 +112,22 @@ In Base 16:
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x 2 = AC0 / 2 = 1 Yes + A = 1326
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x 2 = AC0 / 2 = 1 Yes + A = 1326
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```
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```
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Algorithm:
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1. Initialize Sum <- zero
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2. If B is odd then add A to Sum. In C nomenclature: `Sum += A;`
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3. Multiply A by 2 -- that is, Shift A **left** by one. In C nomenclature: `A <<= 1;`
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4. Divide B by 2 -- that is, Shift B **right** by one. In C nomenclature: ` B >>= 1;`
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5. If B is zero then STOP
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6. Goto step 2
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For a "BigInt" or "BigNumber" library this _isn't_ the most efficient way to
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multiply numbers but it is rather trivial to implement. You only need a few
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functions:
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* `isEven()`
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* `isZero()`
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* `Shl()`
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* `Shr()`
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* `AddTo()`
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