nextpow2
nextpow2(n)
The smallest power of two not less than n
. Returns 0 for n==0
, and returns nextpow2(n)
for negative arguments.
Examples
In the Julia programming language, the function nextpow2(n)
returns the smallest power of two that is not less than n
. It returns 0 for n == 0
, and for negative arguments, it returns nextpow2(n)
.

Find the next power of 2:
julia> nextpow2(10) 16
This example returns the smallest power of 2 greater than or equal to 10, which is 16.

Handle zero input:
julia> nextpow2(0) 0
When the input is 0, the function returns 0.
 Handle negative values:
julia> nextpow2(7) 8
For negative arguments, the function returns
nextpow2(n)
. In this example, the smallest power of 2 greater than or equal to 7 is 8.
Common mistake example:
julia> nextpow2(14)
14
In this example, the user might expect the function to return a negative value since the input is negative. However, nextpow2(14)
actually returns the smallest power of 2 greater than or equal to 14, which is positive.
It's important to note that nextpow2
does not necessarily return a negative value for negative inputs; it returns nextpow2(n)
instead.
See Also
User Contributed Notes
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