Return `NaN` for `0/0`; d8e060d2

df969b16 · Yukihiro "Matz" Matsumoto · ad8b36da · df969b16
Unverified Commit df969b16 authored Aug 08, 2020 by Yukihiro "Matz" Matsumoto
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Showing with 6 additions and 3 deletions

src/numeric.c src/numeric.c +6 -3

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--- a/src/numeric.c
+++ b/src/numeric.c
@@ -166,9 +166,12 @@ integral_div(mrb_state *mrb, mrb_value xv)
  x = mrb_to_flo(mrb, xv);
  if (y == 0) {
    if (x < 0)
-      return mrb_float_value(mrb, -INFINITY);
-    else
-      return mrb_float_value(mrb, INFINITY);
+      y = -INFINITY;
+    else if (x > 0)
+      y = INFINITY;
+    else /* if (x == 0) */
+      y = NAN;
+    return mrb_float_value(mrb, y);
  }
  return mrb_float_value(mrb, x / y);
 #endif