diff options
Diffstat (limited to 'trunk/test/ruby/test_math.rb')
-rw-r--r-- | trunk/test/ruby/test_math.rb | 239 |
1 files changed, 0 insertions, 239 deletions
diff --git a/trunk/test/ruby/test_math.rb b/trunk/test/ruby/test_math.rb deleted file mode 100644 index 55f354664c..0000000000 --- a/trunk/test/ruby/test_math.rb +++ /dev/null @@ -1,239 +0,0 @@ -require 'test/unit' - -class TestMath < Test::Unit::TestCase - def check(a, b) - err = [Float::EPSILON * 4, [a.abs, b.abs].max * Float::EPSILON * 256].max - assert_in_delta(a, b, err) - end - - def test_atan2 - check(0, Math.atan2(0, 1)) - check(Math::PI / 4, Math.atan2(1, 1)) - check(Math::PI / 2, Math.atan2(1, 0)) - end - - def test_cos - check(1.0, Math.cos(0 * Math::PI / 4)) - check(1.0 / Math.sqrt(2), Math.cos(1 * Math::PI / 4)) - check(0.0, Math.cos(2 * Math::PI / 4)) - check(-1.0, Math.cos(4 * Math::PI / 4)) - check(0.0, Math.cos(6 * Math::PI / 4)) - end - - def test_sin - check(0.0, Math.sin(0 * Math::PI / 4)) - check(1.0 / Math.sqrt(2), Math.sin(1 * Math::PI / 4)) - check(1.0, Math.sin(2 * Math::PI / 4)) - check(0.0, Math.sin(4 * Math::PI / 4)) - check(-1.0, Math.sin(6 * Math::PI / 4)) - end - - def test_tan - check(0.0, Math.tan(0 * Math::PI / 4)) - check(1.0, Math.tan(1 * Math::PI / 4)) - assert(Math.tan(2 * Math::PI / 4).abs > 1024) - check(0.0, Math.tan(4 * Math::PI / 4)) - assert(Math.tan(6 * Math::PI / 4).abs > 1024) - end - - def test_acos - check(0 * Math::PI / 4, Math.acos( 1.0)) - check(1 * Math::PI / 4, Math.acos( 1.0 / Math.sqrt(2))) - check(2 * Math::PI / 4, Math.acos( 0.0)) - check(4 * Math::PI / 4, Math.acos(-1.0)) - assert_raise(Errno::EDOM, Errno::ERANGE) { Math.acos(2.0) } - end - - def test_asin - check( 0 * Math::PI / 4, Math.asin( 0.0)) - check( 1 * Math::PI / 4, Math.asin( 1.0 / Math.sqrt(2))) - check( 2 * Math::PI / 4, Math.asin( 1.0)) - check(-2 * Math::PI / 4, Math.asin(-1.0)) - assert_raise(Errno::EDOM, Errno::ERANGE) { Math.asin(2.0) } - end - - def test_atan - check( 0 * Math::PI / 4, Math.atan( 0.0)) - check( 1 * Math::PI / 4, Math.atan( 1.0)) - check( 2 * Math::PI / 4, Math.atan(1.0 / 0.0)) - check(-1 * Math::PI / 4, Math.atan(-1.0)) - end - - def test_cosh - check(1, Math.cosh(0)) - check((Math::E ** 1 + Math::E ** -1) / 2, Math.cosh(1)) - check((Math::E ** 2 + Math::E ** -2) / 2, Math.cosh(2)) - end - - def test_sinh - check(0, Math.sinh(0)) - check((Math::E ** 1 - Math::E ** -1) / 2, Math.sinh(1)) - check((Math::E ** 2 - Math::E ** -2) / 2, Math.sinh(2)) - end - - def test_tanh - check(Math.sinh(0) / Math.cosh(0), Math.tanh(0)) - check(Math.sinh(1) / Math.cosh(1), Math.tanh(1)) - check(Math.sinh(2) / Math.cosh(2), Math.tanh(2)) - end - - def test_acosh - check(0, Math.acosh(1)) - check(1, Math.acosh((Math::E ** 1 + Math::E ** -1) / 2)) - check(2, Math.acosh((Math::E ** 2 + Math::E ** -2) / 2)) - assert_raise(Errno::EDOM, Errno::ERANGE) { Math.acosh(0) } - end - - def test_asinh - check(0, Math.asinh(0)) - check(1, Math.asinh((Math::E ** 1 - Math::E ** -1) / 2)) - check(2, Math.asinh((Math::E ** 2 - Math::E ** -2) / 2)) - end - - def test_atanh - check(0, Math.atanh(Math.sinh(0) / Math.cosh(0))) - check(1, Math.atanh(Math.sinh(1) / Math.cosh(1))) - check(2, Math.atanh(Math.sinh(2) / Math.cosh(2))) - assert_raise(Errno::EDOM, Errno::ERANGE) { Math.atanh(-1) } - end - - def test_exp - check(1, Math.exp(0)) - check(Math.sqrt(Math::E), Math.exp(0.5)) - check(Math::E, Math.exp(1)) - check(Math::E ** 2, Math.exp(2)) - end - - def test_log - check(0, Math.log(1)) - check(1, Math.log(Math::E)) - check(0, Math.log(1, 10)) - check(1, Math.log(10, 10)) - check(2, Math.log(100, 10)) - assert_equal(1.0/0, Math.log(1.0/0)) - assert_raise(Errno::EDOM, Errno::ERANGE) { Math.log(0) } - assert_raise(Errno::EDOM, Errno::ERANGE) { Math.log(-1) } - end - - def test_log2 - check(0, Math.log2(1)) - check(1, Math.log2(2)) - check(2, Math.log2(4)) - assert_equal(1.0/0, Math.log2(1.0/0)) - assert_raise(Errno::EDOM, Errno::ERANGE) { Math.log2(0) } - assert_raise(Errno::EDOM, Errno::ERANGE) { Math.log2(-1) } - end - - def test_log10 - check(0, Math.log10(1)) - check(1, Math.log10(10)) - check(2, Math.log10(100)) - assert_equal(1.0/0, Math.log10(1.0/0)) - assert_raise(Errno::EDOM, Errno::ERANGE) { Math.log10(0) } - assert_raise(Errno::EDOM, Errno::ERANGE) { Math.log10(-1) } - end - - def test_sqrt - check(0, Math.sqrt(0)) - check(1, Math.sqrt(1)) - check(2, Math.sqrt(4)) - assert_equal(1.0/0, Math.sqrt(1.0/0)) - assert_raise(Errno::EDOM, Errno::ERANGE) { Math.sqrt(-1) } - end - - def test_frexp - check(0.0, Math.frexp(0.0).first) - assert_equal(0, Math.frexp(0).last) - check(0.5, Math.frexp(0.5).first) - assert_equal(0, Math.frexp(0.5).last) - check(0.5, Math.frexp(1.0).first) - assert_equal(1, Math.frexp(1.0).last) - check(0.5, Math.frexp(2.0).first) - assert_equal(2, Math.frexp(2.0).last) - check(0.75, Math.frexp(3.0).first) - assert_equal(2, Math.frexp(3.0).last) - end - - def test_ldexp - check(0.0, Math.ldexp(0.0, 0.0)) - check(0.5, Math.ldexp(0.5, 0.0)) - check(1.0, Math.ldexp(0.5, 1.0)) - check(2.0, Math.ldexp(0.5, 2.0)) - check(3.0, Math.ldexp(0.75, 2.0)) - end - - def test_hypot - check(5, Math.hypot(3, 4)) - end - - def test_erf - check(0, Math.erf(0)) - check(1, Math.erf(1.0 / 0.0)) - end - - def test_erfc - check(1, Math.erfc(0)) - check(0, Math.erfc(1.0 / 0.0)) - end - - def test_gamma - sqrt_pi = Math.sqrt(Math::PI) - check(4 * sqrt_pi / 3, Math.gamma(-1.5)) - check(-2 * sqrt_pi, Math.gamma(-0.5)) - check(sqrt_pi, Math.gamma(0.5)) - check(1, Math.gamma(1)) - check(sqrt_pi / 2, Math.gamma(1.5)) - check(1, Math.gamma(2)) - check(3 * sqrt_pi / 4, Math.gamma(2.5)) - check(2, Math.gamma(3)) - check(15 * sqrt_pi / 8, Math.gamma(3.5)) - check(6, Math.gamma(4)) - end - - def test_lgamma - sqrt_pi = Math.sqrt(Math::PI) - - g, s = Math.lgamma(-1.5) - check(Math.log(4 * sqrt_pi / 3), g) - assert_equal(s, 1) - - g, s = Math.lgamma(-0.5) - check(Math.log(2 * sqrt_pi), g) - assert_equal(s, -1) - - g, s = Math.lgamma(0.5) - check(Math.log(sqrt_pi), g) - assert_equal(s, 1) - - assert_equal([0, 1], Math.lgamma(1)) - - g, s = Math.lgamma(1.5) - check(Math.log(sqrt_pi / 2), g) - assert_equal(s, 1) - - assert_equal([0, 1], Math.lgamma(2)) - - g, s = Math.lgamma(2.5) - check(Math.log(3 * sqrt_pi / 4), g) - assert_equal(s, 1) - - g, s = Math.lgamma(3) - check(Math.log(2), g) - assert_equal(s, 1) - - g, s = Math.lgamma(3.5) - check(Math.log(15 * sqrt_pi / 8), g) - assert_equal(s, 1) - - g, s = Math.lgamma(4) - check(Math.log(6), g) - assert_equal(s, 1) - end - - def test_cbrt - check(1, Math.cbrt(1)) - check(-2, Math.cbrt(-8)) - check(3, Math.cbrt(27)) - check(-0.1, Math.cbrt(-0.001)) - end -end |