#log2

return the base 2 logarithm of the parameter

#Declaration

• genType log2(genType x)

#Parameters

• x: Specify the value of which to take the base 2 logarithm.

#Description

log2 returns the base 2 logarithm of x. i.e., the value 𝑦 which satisfies $$ x = 2^{y} $$ Results are undefined if x ≤ 0.

#See Also

• exp
• exp2
• log