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Complex.Log Method (Complex)
Visual Studio 2010
Returns the natural (base e) logarithm of a specified complex number.
Assembly: System.Numerics (in System.Numerics.dll)
Parameters
- value
- Type: System.Numerics.Complex
A complex number.
The Log(Complex) method for complex numbers corresponds to the Math.Log(Double) method for real numbers.
The following example illustrates the Log method. It shows that, with some allowance for the lack of precision of the Double data type, passing the value returned by the Log method to the Exp method returns the original Complex value.
using System; using System.Numerics; public class Example { public static void Main() { Complex[] values = { new Complex(1.53, 9.26), new Complex(2.53, -8.12), new Complex(-2.81, 5.32), new Complex(-1.09, -3.43), new Complex(Double.MinValue/2, Double.MinValue/2) }; foreach (Complex value in values) Console.WriteLine("Exp(Log({0}) = {1}", value, Complex.Exp(Complex.Log(value))); } } // The example displays the following output: // Exp(Log((1.53, 9.26)) = (1.53, 9.26) // Exp(Log((2.53, -8.12)) = (2.53, -8.12) // Exp(Log((-2.81, 5.32)) = (-2.81, 5.32) // Exp(Log((-1.09, -3.43)) = (-1.09, -3.43) // Exp(Log((-8.98846567431158E+307, -8.98846567431158E+307)) = (-8.98846567431161E+307, -8.98846567431161E+307)
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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