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BitSet
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BitSet

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BitSet[n,k]

sets to 1 the bit corresponding to the coefficient of in the integer n.

Details

  • BitSet[n,k] sets the bit k places from the right.

Examples

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Basic Examples  (1)Summary of the most common use cases

Display coefficients at powers of 2 in the integer 42:

In[1]:=1
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https://wolfram.com/xid/0e7q7jfn-giugz1
Out[1]=1

Set the bit corresponding to the coefficient at 20 to 1:

In[2]:=2
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https://wolfram.com/xid/0e7q7jfn-k1xmrg
Out[2]=2
In[3]:=3
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https://wolfram.com/xid/0e7q7jfn-ng5rr2
Out[3]=3

Set the bit corresponding to the coefficient at 24:

In[4]:=4
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https://wolfram.com/xid/0e7q7jfn-qnksw
Out[4]=4
In[5]:=5
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https://wolfram.com/xid/0e7q7jfn-r8eaw
Out[5]=5

Scope  (1)Survey of the scope of standard use cases

BitSet automatically creates an integer of the necessary size:

In[1]:=1
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https://wolfram.com/xid/0e7q7jfn-b78nso
Out[1]=1
In[2]:=2
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https://wolfram.com/xid/0e7q7jfn-cv3yn5
Out[2]=2
In[3]:=3
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https://wolfram.com/xid/0e7q7jfn-73c9z
Out[3]=3

Applications  (1)Sample problems that can be solved with this function

Generate a number in which specified bits are set:

In[1]:=1
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https://wolfram.com/xid/0e7q7jfn-xai173
Out[1]=1

Show which bits have been set:

In[2]:=2
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https://wolfram.com/xid/0e7q7jfn-50f5qs
Out[2]=2
Wolfram Research (2007), BitSet, Wolfram Language function, https://reference.wolfram.com/language/ref/BitSet.html.
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Wolfram Research (2007), BitSet, Wolfram Language function, https://reference.wolfram.com/language/ref/BitSet.html.

Text

Wolfram Research (2007), BitSet, Wolfram Language function, https://reference.wolfram.com/language/ref/BitSet.html.

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Wolfram Research (2007), BitSet, Wolfram Language function, https://reference.wolfram.com/language/ref/BitSet.html.

CMS

Wolfram Language. 2007. "BitSet." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/BitSet.html.

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Wolfram Language. 2007. "BitSet." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/BitSet.html.

APA

Wolfram Language. (2007). BitSet. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/BitSet.html

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Wolfram Language. (2007). BitSet. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/BitSet.html

BibTeX

@misc{reference.wolfram_2025_bitset, author="Wolfram Research", title="{BitSet}", year="2007", howpublished="\url{https://reference.wolfram.com/language/ref/BitSet.html}", note=[Accessed: 11-March-2025 ]}

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@misc{reference.wolfram_2025_bitset, author="Wolfram Research", title="{BitSet}", year="2007", howpublished="\url{https://reference.wolfram.com/language/ref/BitSet.html}", note=[Accessed: 11-March-2025 ]}

BibLaTeX

@online{reference.wolfram_2025_bitset, organization={Wolfram Research}, title={BitSet}, year={2007}, url={https://reference.wolfram.com/language/ref/BitSet.html}, note=[Accessed: 11-March-2025 ]}

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@online{reference.wolfram_2025_bitset, organization={Wolfram Research}, title={BitSet}, year={2007}, url={https://reference.wolfram.com/language/ref/BitSet.html}, note=[Accessed: 11-March-2025 ]}