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FGenericPlatformMath::FloorLog2_64

Computes the base 2 logarithm for a 64-bit value that is greater than 0.

Windows

MacOS

Linux

References

Module	Core
Header	/Engine/Source/Runtime/Core/Public/GenericPlatform/GenericPlatformMath.h
Include	#include "GenericPlatform/GenericPlatformMath.h"

Syntax

static uint64 FloorLog2_64
(
uint64 Value
)

Remarks

Computes the base 2 logarithm for a 64-bit value that is greater than 0. The result is rounded down to the nearest integer.

Returns

Log2 of Value. 0 if Value is 0.

Parameters

Parameter	Description
Value	The value to compute the log of

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