atanpi

Calculates the arc tangent of x divided by π, returning a value ranging from -1/2 to 1/2. Exceptions:


InvalidOperationException	x is signaling NaN
InexactException	the result is inexact
UnderflowException	the result is too small to be represented

@IEEECompliant("atanPi", 43)

atanpi

(

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(

auto const ref D x

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if (

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Detailed Description

decimal32 radians = 1;
assert (atanpi(radians) == decimal32("0.25"));