atan2pi

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


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

@IEEECompliant("atan2Pi", 43)

atan2pi

(

)

(

auto const ref D1 y

auto const ref D2 x

)

if (

)

Detailed Description

decimal32 y = 10;
decimal32 x = 0;
assert (atan2pi(y, x) == decimal32("0.5"));