ab
or a^b
a
raised to the power b
.
Note that zero raised to any positive power is zero.
C programmers should be careful not
to misread this notation as exclusive-or.
x,y
that precisely specify a color,
except for the brightness information.
output = input ^ gamma
where both input and output are scaled to the range 0 to 1. Within this specification, gamma refers specifically to the function from display output to image samples.