Parameters

a

A double whose logarithm is to be found.

newBase

A double containing the value of the base of the logarithm.

Returns

Returns a double whose value is as follows:

Condition	Returns
a > 0, newBase > 0, but newBase != 1	lognewBasea
a < 0	double.NaN
newBase < 0	double.NaN
newBase == 0, a != 1	double.NaN
newBase == 0, a == 1	Zero
0 < newBase < 1, a == 0	double.PositiveInfinity
0 < newBase < 1, a == +infinity	double.NegativeInfinity
newBase == 1	double.NaN
newBase > 1, a == 0	double.NegativeInfinity
newBase > 1, a == +infinity	double.PositiveInfinity
newBase == +infinity, a != 1	double.NaN
newBase == +infinity, a == 1	Zero
a == NaN or newBase == NaN	double.NaN

Remarks

Documentation for this section has not yet been entered.

Requirements

Namespace: System
Assembly: mscorlib (in mscorlib.dll)
Assembly Versions: 1.0.5000.0, 2.0.0.0