LOG2(3G) [FIXME: manual] LOG2(3G)

# NAME¶

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 $x = 2^y$. The result is undefined if $x \leq 0$.

# VERSION SUPPORT¶

 OpenGL Shading Language Version Function Name 1.10 1.20 1.30 1.40 1.50 3.30 4.00 4.10 4.20 4.30 4.40 4.50 log2 ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔