mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
100 lines
3.3 KiB
Ruby
100 lines
3.3 KiB
Ruby
require_relative '../../spec_helper'
|
|
|
|
describe "Integer#fdiv" do
|
|
it "performs floating-point division between self and a fixnum" do
|
|
8.fdiv(7).should be_close(1.14285714285714, TOLERANCE)
|
|
end
|
|
|
|
it "performs floating-point division between self and a bignum" do
|
|
8.fdiv(bignum_value).should be_close(8.673617379884035e-19, TOLERANCE)
|
|
end
|
|
|
|
it "performs floating-point division between self bignum and a bignum" do
|
|
num = 1000000000000000000000000000000000048148248609680896326399448564623182963452541226153892315137780403285956264146010000000000000000000000000000000000048148248609680896326399448564623182963452541226153892315137780403285956264146010000000000000000000000000000000000048148248609680896326399448564623182963452541226153892315137780403285956264146009
|
|
den = 2000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
|
|
num.fdiv(den).should == 500.0
|
|
end
|
|
|
|
it "rounds to the correct value for bignums" do
|
|
den = 9 * 10**342
|
|
|
|
num = 1 * 10**344
|
|
num.fdiv(den).should == 11.11111111111111
|
|
|
|
num = 1 * 10**343
|
|
num.fdiv(den).should == 1.1111111111111112
|
|
|
|
num = 1 * 10**342
|
|
num.fdiv(den).should == 0.1111111111111111
|
|
|
|
num = 2 * 10**342
|
|
num.fdiv(den).should == 0.2222222222222222
|
|
|
|
num = 3 * 10**342
|
|
num.fdiv(den).should == 0.3333333333333333
|
|
|
|
num = 4 * 10**342
|
|
num.fdiv(den).should == 0.4444444444444444
|
|
|
|
num = 5 * 10**342
|
|
num.fdiv(den).should == 0.5555555555555556
|
|
|
|
num = 6 * 10**342
|
|
num.fdiv(den).should == 0.6666666666666666
|
|
|
|
num = 7 * 10**342
|
|
num.fdiv(den).should == 0.7777777777777778
|
|
|
|
num = 8 * 10**342
|
|
num.fdiv(den).should == 0.8888888888888888
|
|
|
|
num = 9 * 10**342
|
|
num.fdiv(den).should == 1.0
|
|
|
|
num = -5 * 10**342
|
|
num.fdiv(den).should == -0.5555555555555556
|
|
end
|
|
|
|
it "rounds to the correct float for bignum denominators" do
|
|
1.fdiv(10**324).should == 0.0
|
|
1.fdiv(10**323).should == 1.0e-323
|
|
end
|
|
|
|
it "performs floating-point division between self and a Float" do
|
|
8.fdiv(9.0).should be_close(0.888888888888889, TOLERANCE)
|
|
end
|
|
|
|
it "returns NaN when the argument is NaN" do
|
|
-1.fdiv(nan_value).nan?.should be_true
|
|
1.fdiv(nan_value).nan?.should be_true
|
|
end
|
|
|
|
it "returns Infinity when the argument is 0" do
|
|
1.fdiv(0).infinite?.should == 1
|
|
end
|
|
|
|
it "returns -Infinity when the argument is 0 and self is negative" do
|
|
-1.fdiv(0).infinite?.should == -1
|
|
end
|
|
|
|
it "returns Infinity when the argument is 0.0" do
|
|
1.fdiv(0.0).infinite?.should == 1
|
|
end
|
|
|
|
it "returns -Infinity when the argument is 0.0 and self is negative" do
|
|
-1.fdiv(0.0).infinite?.should == -1
|
|
end
|
|
|
|
it "raises a TypeError when argument isn't numeric" do
|
|
-> { 1.fdiv(mock('non-numeric')) }.should raise_error(TypeError)
|
|
end
|
|
|
|
it "raises an ArgumentError when passed multiple arguments" do
|
|
-> { 1.fdiv(6,0.2) }.should raise_error(ArgumentError)
|
|
end
|
|
|
|
it "follows the coercion protocol" do
|
|
(obj = mock('10')).should_receive(:coerce).with(1).and_return([1, 10])
|
|
1.fdiv(obj).should == 0.1
|
|
end
|
|
end
|