__lg(x) in c++

Sundaram Anand answered on February 21, 2022 Popularity 1/10 Helpfulness 1/10

answer __lg(x) in c++

related __lg(x) in c++

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in application terms it is equal to (int)log2(x) and also 
int log(int x) {
    return 32 - __builtin_clz(x) - 1;
}

Popularity 1/10 Helpfulness 1/10 Language cpp

Source: Grepper

Tags: c++

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Contributed on Jul 07 2022

Sundaram Anand

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Comment

it used to find the higgest bit in a number e.g. 1-> 0 , 2-> 1 , 16-> 4, 10-> 3

Popularity 6/10 Helpfulness 5/10 Language cpp

Source: Grepper

Tags: c++

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Contributed on Feb 21 2022

drpzet

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