simdpp::popcnt
From libsimdpp-docs
< int
| template<unsigned N, class E1, class E2>
Ret<N, _DETAIL_> popcnt( Vec<N,E1> a ); |
||
Counts the number of set bits (population count) in each element of the vector. The implementation behaves as if the following set of overloads is provided:
Ret
|
Vec
|
|---|---|
| int8 | int8 |
| uint8 | uint8 |
| int16 | int16 |
| uint16 | uint16 |
| int32 | int32 |
| uint32 | uint32 |
| int64 | int64 |
| uint64 | uint64 |
The return type is a vector expression.
Parameters[edit]
| a | - | integer vector |
Return value[edit]
A vector expression evaluating to popcnt(a).
Equivalent operation[edit]
r0 = popcnt(a0) ... rN = popcnt(aN)
See also[edit]
| computes the sum of set bits in all elements in the vector (function template) |