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Required fields*

Rev

Required fields*

Clearing the most significant bit from an integer

Input

The input is a single positive integer n

Output

The output isn with its most significant bit set to 0.

Test Cases

1 -> 0
2 -> 0
10 -> 2
16 -> 0
100 -> 36
267 -> 11
350 -> 94
500 -> 244

For example: 350 in binary is 101011110. Setting its most significant bit (i.e. the leftmost 1 bit) to 0 turns it into 001011110 which is equivalent to the decimal integer 94, the output. This is OEIS A053645.

Answer*

If this is an answer to a challenge…

…Be sure to follow the challenge specification. However, please refrain from exploiting obvious loopholes. Answers abusing any of the standard loopholes are considered invalid. If you think a specification is unclear or underspecified, comment on the question instead.
…Try to optimize your score. For instance, answers to code-golf challenges should attempt to be as short as possible. You can always include a readable version of the code in addition to the competitive one. Explanations of your answer make it more interesting to read and are very much encouraged.
…Include a short header which indicates the language(s) of your code and its score, as defined by the challenge.

More generally…

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…Avoid asking for help, clarification or responding to other answers (use comments instead).

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2

\$\begingroup\$ b¦C also works... doesn't it? Convert to binary, MSB is always at index 1, remove MSB, convert back. \$\endgroup\$

Magic Octopus Urn
– Magic Octopus Urn

2017年11月15日 12:01:45 +00:00
Commented Nov 15, 2017 at 12:01
3

\$\begingroup\$ @MagicOctopusUrn No that is wrong, fails for 1! \$\endgroup\$

Mr. Xcoder
– Mr. Xcoder

2017年11月15日 12:15:17 +00:00
Commented Nov 15, 2017 at 12:15
\$\begingroup\$ @MagicOctopusUrn b¦C works for 1 in the new 05AB1E version. Although I like your .²óo- more tbh. :) \$\endgroup\$

Kevin Cruijssen
– Kevin Cruijssen

2022年09月22日 14:05:41 +00:00
Commented Sep 22, 2022 at 14:05

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