log
fun
log
(
x
:
Double
,
base
:
Double
)
:
Double
(Common source) (JVM source) (JS source) (Native source)
fun
log
(
x
:
Float
,
base
:
Float
)
:
Float
(Common source) (JVM source) (JS source) (Native source)
Computes the logarithm of the value x to the given base .
Special cases:
-
log(x, b)
isNaN
if eitherx
orb
areNaN
-
log(x, b)
isNaN
whenx < 0
orb <= 0
orb == 1.0
-
log(+Inf, +Inf)
isNaN
-
log(+Inf, b)
is+Inf
forb > 1
and-Inf
forb < 1
-
log(0.0, b)
is-Inf
forb > 1
and+Inf
forb > 1
See also logarithm functions for common fixed bases: ln , log10 and log2 .