2.1.994 Part 4 Section 3.17.7.155, IMLN

a.   The standard does not specify what happens if complex-number is zero.

Office returns #NUM! if complex-number is zero.

b.   The standard does not fully specify how the angle θ is calculated.

Excel calculates imln using the following mathematical formula:

Equation

where:

θ = ATAN2(x,y) calculated according to the formula in ATAN2 (“[ECMA-376] Part 4 §3.17.7.15; ATAN2”)Equation

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