log10
(PHP 3, PHP 4 )
log10 -- Base-10 logarithm
Description
float log10 ( float arg)
Returns the base-10 logarithm of arg.
See Also: log()
log1p
(PHP 4 >= 4.1.0)
log1p -- Returns log(1 + number), computed in a way that
is accurate even when the value of number is close to zero
Description
float log1p ( float number)
Warning
This function is EXPERIMENTAL. The behaviour of this function,
the name of this function, and anything else documented
about this function may change without notice in a future
release of PHP. Use this function at your own risk.
Warning
This function is currently not documented; only the argument
list is available.
Note: This function is not implemented on Windows platforms.
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