Updated: 27 August 2010
Use IMARGUMENT function to return theta, an angle expressed in radians.
Syntax
SELECT [wctEngineering].[wct].[IMARGUMENT] (
<@inumber, nvarchar(4000),>)
Arguments
@inumber
is the value at which to evaluate the function. @inumber is an expression of type varchar or of a type that can be implicitly converted to varchar and must be in the format x + yi or x + yj, where x is a real number that can converted to float and yi (or yj) is an imaginary number, where the y part can be converted to float.
Return Types
float
Remarks
· Use COMPLEX to convert real and imaginary coefficients into a complex number
· IMARGUMENT(@inumber) = atan(imaginary(@inumber)/imreal(@inumber))
Examples
select wct.IMARGUMENT('7+24i')
This produces the following result
----------------------
1.28700221758657
(1 row(s) affected)
select atan(wct.IMAGINARY('7+24i')/wct.IMREAL('7+24i'))
This produces the following result
----------------------
1.28700221758657
(1 row(s) affected)