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-rw-r--r--ChangeLog4
-rw-r--r--lib/cmath.rb6
2 files changed, 7 insertions, 3 deletions
diff --git a/ChangeLog b/ChangeLog
index 13696cd483..5e208739a3 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Thu Dec 11 23:48:00 2008 Tadayoshi Funaba <tadf@dotrb.org>
+
+ * lib/cmath.rb (sqrt): should pass nan to the original method.
+
Thu Dec 11 19:31:45 2008 Tanaka Akira <akr@fsij.org>
* lib/test/unit/assertions.rb: extracted from lib/test/unit.rb.
diff --git a/lib/cmath.rb b/lib/cmath.rb
index 00bcc9087f..95a30c336b 100644
--- a/lib/cmath.rb
+++ b/lib/cmath.rb
@@ -57,10 +57,10 @@ module CMath
def sqrt(z)
if z.real?
- if z >= 0
- sqrt!(z)
- else
+ if z < 0
Complex(0, sqrt!(-z))
+ else
+ sqrt!(z)
end
else
if z.imag < 0