From a2bf9203e8b74065eb1452dd13741b3de7305eaf Mon Sep 17 00:00:00 2001
From: mrkn <mrkn@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sat, 28 Aug 2010 08:52:14 +0000
Subject: * ext/bigdecimal/bigdecimal.c (BigDecimal_save_exception_mode,  
 BigDecimal_save_rounding_mode, BigDecimal_save_limit): added. *
 test/bigdecimal/test_bigdecimal.rb: added tests for the above   features.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@29127 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ext/bigdecimal/bigdecimal.c | 46 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)

(limited to 'ext')

diff --git a/ext/bigdecimal/bigdecimal.c b/ext/bigdecimal/bigdecimal.c
index c0d42e07dc..776615e089 100644
--- a/ext/bigdecimal/bigdecimal.c
+++ b/ext/bigdecimal/bigdecimal.c
@@ -1800,6 +1800,48 @@ BigDecimal_sign(VALUE self)
     return INT2FIX(s);
 }
 
+/* call-seq:
+ * BigDecimal.save_exception_mode { ... }
+ */
+static VALUE
+BigDecimal_save_exception_mode(VALUE self)
+{
+    unsigned short const exception_mode = VpGetException();
+    int state;
+    VALUE ret = rb_protect(rb_yield, Qnil, &state);
+    VpSetException(exception_mode);
+    if (state) rb_jump_tag(state);
+    return ret;
+}
+
+/* call-seq:
+ * BigDecimal.save_rounding_mode { ... }
+ */
+static VALUE
+BigDecimal_save_rounding_mode(VALUE self)
+{
+    unsigned short const round_mode = VpGetRoundMode();
+    int state;
+    VALUE ret = rb_protect(rb_yield, Qnil, &state);
+    VpSetRoundMode(round_mode);
+    if (state) rb_jump_tag(state);
+    return Qnil;
+}
+
+/* call-seq:
+ * BigDecimal.save_limit { ... }
+ */
+static VALUE
+BigDecimal_save_limit(VALUE self)
+{
+    size_t const limit = VpGetPrecLimit();
+    int state;
+    VALUE ret = rb_protect(rb_yield, Qnil, &state);
+    VpSetPrecLimit(limit);
+    if (state) rb_jump_tag(state);
+    return Qnil;
+}
+
 /* Document-class: BigDecimal
  * BigDecimal provides arbitrary-precision floating point decimal arithmetic.
  *
@@ -1926,6 +1968,10 @@ Init_bigdecimal(void)
     rb_define_singleton_method(rb_cBigDecimal, "_load", BigDecimal_load, 1);
     rb_define_singleton_method(rb_cBigDecimal, "ver", BigDecimal_version, 0);
 
+    rb_define_singleton_method(rb_cBigDecimal, "save_exception_mode", BigDecimal_save_exception_mode, 0);
+    rb_define_singleton_method(rb_cBigDecimal, "save_rounding_mode", BigDecimal_save_rounding_mode, 0);
+    rb_define_singleton_method(rb_cBigDecimal, "save_limit", BigDecimal_save_limit, 0);
+
     /* Constants definition */
 
     /*
-- 
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