log2

Details #

log2(x) takes exactly one argument and returns the base 2 logarithm. ceil(log2(n)) is how many bits it takes to count up to n.

Parameters #

Takes 1 argument. {{ log2(text) }}

Examples #

log2(8)

ceil(log2(n))

Gotchas #

• Calling it with no argument or two arguments is an error: log2() takes 1 argument, got 2.

• Anything that isn't a number is an error: log2() needs a number, got text. Numeric text such as "0.5" is accepted.

• Zero and negative numbers have no logarithm; the step stops with log2() has no result for that number.