10.4 arg()

Prototypes		Header File(s)
`RWMathVec<double>`	`arg(const RWMathVec<DComplex>&)`	`<rw/math/mathvec.h>`
`RWGenMat<double>`	`arg(const RWGenMat<DComplex>&)`	`<rw/math/genmat.h>`
`RWMathArray<double>`	`arg(const RWMathArray<DComplex>&)`	`<rw/math/mtharray.h>`

10.4.1 Description

Returns the arguments a_i (in radians) of x in the range
-< a_i , where a_i = tan^-1[Im(x_i)/Re(x_i)]. Multiple valued functions of complex arguments, such as sqrt() and log(), are therefore constrained to their principle value.