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The problem of seeking log2 N in C

Source: Internet
Author: User
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Today, when writing the sequential storage of a two-fork tree, a mathematical problem was encountered.

It is known that the total binary tree with the number of nodes n is the depth k: K = log2 n + 1,log2n is rounded down. Check the C-math.h only log and LOG10 functions. Log is based on the base e, LOG10 is based on 10, then how to find a 2-based tree?

Baidu did not know log2n = in (N)/In (2) , in is the base of E, the value is 2.71828 ..., the use of the logarithm of the bottom-changing formula.

Math is good, and it's important for a software developer. Hey.. Surf the internet to check the logarithm of the other formula, so that later temperature.

1, 2, 3, 4, 5, Exchange Formula reference URL: Click to open the link

The problem of seeking log2 N in C

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