Quad.Log Method
Definition
Namespace: Extreme.Mathematics
Assembly: Extreme.Numerics (in Extreme.Numerics.dll) Version: 8.1.23
Assembly: Extreme.Numerics (in Extreme.Numerics.dll) Version: 8.1.23
Overload List
Log( | Returns the natural (base e) logarithm of a specified number. |
Log( | Returns the logarithm of a specified number in a specified base. |
Log(Quad)
Returns the natural (base e) logarithm of a specified number.
public static Quad Log(
Quad value
)
Parameters
- value Quad
- A number whose logarithm is to be found.
Return Value
QuadOne of the values in the following table. value parameterReturn value Positive The natural logarithm of value; that is, ln value, or log edZero System.Double.NegativeInfinityNegative System.Double.NaNEqual to System.Double.NaNSystem.Double.NaNEqual to System.Double.PositiveInfinitySystem.Double.PositiveInfinity
Exceptions
Overflow | value is zero. |
Argument | value is less than zero. |
Log(Quad, Quad)
Returns the logarithm of a specified number in a specified base.
public static Quad Log(
Quad value,
Quad newBase
)
Parameters
Return Value
QuadOne of the values in the following table. (+Infinity denotes System.Double.PositiveInfinity, -Infinity denotes System.Double.NegativeInfinity, and NaN denotes System.Double.NaN.)anewBaseReturn valuea> 0(0 <newBase< 1) -or-(newBase> 1)lognewBase(a)a< 0(any value)NaN(any value)newBase< 0NaNa != 1newBase = 0NaNa != 1newBase = +InfinityNaNa = NaN(any value)NaN(any value)newBase = NaNNaN(any value)newBase = 1NaNa = 00 <newBase< 1 +Infinitya = 0newBase> 1-Infinitya = +Infinity0 <newBase< 1-Infinitya = +InfinitynewBase> 1+Infinitya = 1newBase = 00a = 1newBase = +Infinity0
Exceptions
Overflow | value is zero. |
Argument | value is less than zero. -or- newBase is less than or equal to zero. |