nobu	2014-01-11 19:26:05 +0900 (Sat, 11 Jan 2014)

  New Revision: 44560

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=44560

  Log:
    test_bigmath.rb: test_log
    
    * test/bigdecimal/test_bigmath.rb (test_log): add basic test for BigMath.log.

  Modified files:
    trunk/test/bigdecimal/test_bigmath.rb
Index: test/bigdecimal/test_bigmath.rb
===================================================================
--- test/bigdecimal/test_bigmath.rb	(revision 44559)
+++ test/bigdecimal/test_bigmath.rb	(revision 44560)
@@ -60,4 +60,11 @@ class TestBigMath < Test::Unit::TestCase https://github.com/ruby/ruby/blob/trunk/test/bigdecimal/test_bigmath.rb#L60
     assert_equal(BigDecimal("0.823840753418636291769355073102514088959345624027952954058347023122539489"),
                  atan(BigDecimal("1.08"), 72).round(72), '[ruby-dev:41257]')
   end
+
+  def test_log
+    assert_equal(0, BigMath.log(BigDecimal("1.0"), 10))
+    assert_in_epsilon(Math.log(10)*1000, BigMath.log(BigDecimal("1e1000"), 10))
+    assert_raise(Math::DomainError) {BigMath.log(BigDecimal("0"), 10)}
+    assert_raise(Math::DomainError) {BigMath.log(BigDecimal("-1"), 10)}
+  end
 end

--
ML: ruby-changes@q...
Info: http://www.atdot.net/~ko1/quickml/