chore: Correct result

grain-lang · Feb 19, 2024 · 1d48b81 · 1d48b81
1 parent 36943de
commit 1d48b81
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diff --git a/compiler/test/stdlib/number.test.gr b/compiler/test/stdlib/number.test.gr
@@ -864,6 +864,8 @@ assert Number.atan2(0.615702673197924044, 2.01190257903248026) ==
   0.2969797400449351
 assert Number.atan2(-0.558758682360915193, 0.0322398306026380407) ==
   -1.51316120533039156
+assert Number.atan2(1, 0) == Number.pi / 2
+assert Number.atan2(-1, 0) == Number.pi / -2
 assert Number.atan2(0, 0) == 0
 assert Number.atan2(0, -1) == Number.pi
 assert Number.atan2(0, -Infinity) == Number.pi

diff --git a/stdlib/number.gr b/stdlib/number.gr
@@ -883,9 +883,9 @@ provide let atan2 = (y, x) => {
   } else if (x < 0 && y < 0) {
     atan(y / x) - pi
   } else if (x == 0 && y > 0) {
-    2 / pi
+    pi / 2
   } else if (x == 0 && y < 0) {
-    -2 / pi
+    pi / -2
   } else { // x == 0 && y == 0
     0
   }