Fix

spec.html

@@ -31961,7 +31961,7 @@ <h1>Math.atan2 ( _y_, _x_ )</h1>
           1. Let _r_ be the inverse tangent of abs(ℝ(_ny_) / ℝ(_nx_)).
           1. If _nx_ &lt; *-0*<sub>𝔽</sub>, then
             1. If _ny_ > *+0*<sub>𝔽</sub>, set _r_ to π - _r_.
-            1. Else, set _r_ to -π - _r_.
+            1. Else, set _r_ to -π + _r_.
           1. Else,
             1. If _ny_ &lt; *-0*<sub>𝔽</sub>, set _r_ to -_r_.
           1. Return an implementation-approximated Number value representing _r_.