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Difference between revisions of "cpp/numeric/bit floor"

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m (T. Canens moved page cpp/numeric/floor2 to cpp/numeric/bit floor: Text replace - "(ceil|floor)2" to "bit_$1")

Revision as of 05:00, 21 February 2020

 
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Generic numeric operations
Bit operations
(C++20)    
(C++20)
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bit_floor
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++23)
(C++20)
 
Defined in header <bit>
template< class T >
constexpr T floor2(T x) noexcept;
 (since C++20)

If x is not zero, calculates the largest integral power of two that is not greater than x. If x is zero, returns zero.

This overload participates in overload resolution only if T is an unsigned integer type (that is, unsigned char, unsigned short, unsigned int, unsigned long, unsigned long long, or an extended unsigned integer type).

Return value

Zero if x is zero; otherwise, the largest integral power of two that is not greater than x.

Example

This section is incomplete
Reason: no example
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