From 36e3d46d35b6a904533e58809369054b135c33d7 Mon Sep 17 00:00:00 2001
From: Maciej Rzasa <maciejrzasa@gmail.com>
Date: Wed, 30 Nov 2022 22:38:25 +0100
Subject: [ruby/bigdecimal] Handle correctly #remainder with infinity. Fixes
 https://github.com/ruby/bigdecimal/pull/187

https://github.com/ruby/bigdecimal/commit/4b8572d452
---
 ext/bigdecimal/bigdecimal.c | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'ext')

diff --git a/ext/bigdecimal/bigdecimal.c b/ext/bigdecimal/bigdecimal.c
index ce50e780f8..637e824af5 100644
--- a/ext/bigdecimal/bigdecimal.c
+++ b/ext/bigdecimal/bigdecimal.c
@@ -2082,6 +2082,13 @@ BigDecimal_divremain(VALUE self, VALUE r, Real **dv, Real **rv)
     if (!b) return DoSomeOne(self, r, rb_intern("remainder"));
     SAVE(b);
 
+    if (VpIsPosInf(b) || VpIsNegInf(b)) {
+       GUARD_OBJ(*dv, NewZeroWrapLimited(1, 1));
+       VpSetZero(*dv, 1);
+       *rv = a;
+       return Qnil;
+    }
+
     mx = (a->MaxPrec + b->MaxPrec) *VpBaseFig();
     GUARD_OBJ(c,   NewZeroWrapLimited(1, mx));
     GUARD_OBJ(res, NewZeroWrapNolimit(1, (mx+1) * 2 + (VpBaseFig() + 1)));
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