From f00efef30ad6eca30e5674493dacbd25b425a4eb Mon Sep 17 00:00:00 2001
From: Kenta Murata <mrkn@mrkn.jp>
Date: Wed, 9 Oct 2019 10:27:08 +0900
Subject: [ruby/bigdecimal] Support a Complex in Kernel.BigDecimal()

https://github.com/ruby/bigdecimal/commit/00795cb01f
---
 ext/bigdecimal/bigdecimal.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'ext/bigdecimal')

diff --git a/ext/bigdecimal/bigdecimal.c b/ext/bigdecimal/bigdecimal.c
index 23851eea58..3a46bd1c01 100644
--- a/ext/bigdecimal/bigdecimal.c
+++ b/ext/bigdecimal/bigdecimal.c
@@ -2629,6 +2629,7 @@ VpNewVarArg(int argc, VALUE *argv)
         }
     }
 
+  retry:
     switch (TYPE(iniValue)) {
       case T_DATA:
 	if (is_kind_of_BigDecimal(iniValue)) {
@@ -2666,6 +2667,18 @@ VpNewVarArg(int argc, VALUE *argv)
 	}
 	return GetVpValueWithPrec(iniValue, mf, 1);
 
+      case T_COMPLEX:
+        {
+            VALUE im;
+            im = rb_complex_imag(iniValue);
+            if (!is_zero(im)) {
+                rb_raise(rb_eArgError,
+                         "Unable to make a BigDecimal from non-zero imaginary number");
+            }
+            iniValue = rb_complex_real(iniValue);
+            goto retry;
+        }
+
       case T_STRING:
 	/* fall through */
       default:
-- 
cgit v1.2.3