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XLeratorDB/engineering Online Documentation

SQL Server IMARGUMENT function


 
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)



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