From fe96a2495cfd8dda16037df2451424b9b36a56e4 Mon Sep 17 00:00:00 2001 From: nobu Date: Mon, 18 Apr 2016 03:56:33 +0000 Subject: numeric.c: flo_truncate * numeric.c (flo_truncate): add an optional parameter, digits, as well as Float#round. [Feature #12245] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54625 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- test/ruby/test_float.rb | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) (limited to 'test/ruby') diff --git a/test/ruby/test_float.rb b/test/ruby/test_float.rb index 424436b088..06b1d85242 100644 --- a/test/ruby/test_float.rb +++ b/test/ruby/test_float.rb @@ -501,6 +501,32 @@ class TestFloat < Test::Unit::TestCase assert_equal(0.99, 0.981.ceil(prec)) end + def test_truncate_with_precision + assert_equal(1.100, 1.111.truncate(1)) + assert_equal(1.110, 1.111.truncate(2)) + assert_equal(11110, 11119.9.truncate(-1)) + assert_equal(11100, 11100.0.truncate(-2)) + assert_equal(11100, 11199.9.truncate(-2)) + assert_equal(-1.100, -1.111.truncate(1)) + assert_equal(-1.110, -1.111.truncate(2)) + assert_equal(-11110, -11111.1.truncate(-1)) + assert_equal(-11100, -11111.1.truncate(-2)) + assert_equal(0, 11111.1.truncate(-5)) + + assert_equal(10**300, 1.1e300.truncate(-300)) + assert_equal(-10**300, -1.1e300.truncate(-300)) + assert_equal(1.0e-300, 1.1e-300.truncate(300)) + assert_equal(-1.0e-300, -1.1e-300.truncate(300)) + + assert_equal(42.0, 42.0.truncate(308)) + assert_equal(1.0e307, 1.0e307.truncate(2)) + + assert_raise(TypeError) {1.0.truncate("4")} + assert_raise(TypeError) {1.0.truncate(nil)} + def (prec = Object.new).to_int; 2; end + assert_equal(0.99, 0.998.truncate(prec)) + end + VS = [ 18446744073709551617.0, 18446744073709551616.0, -- cgit v1.2.3