[270] | 1 | ##
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| 2 | # Float ISO Test
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| 3 |
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[439] | 4 | if Object.const_defined?(:Float)
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| 5 |
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[270] | 6 | assert('Float', '15.2.9') do
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| 7 | assert_equal Class, Float.class
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| 8 | end
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| 9 |
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| 10 | assert('Float#+', '15.2.9.3.1') do
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| 11 | a = 3.123456788 + 0.000000001
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| 12 | b = 3.123456789 + 1
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| 13 |
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| 14 | assert_float(3.123456789, a)
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| 15 | assert_float(4.123456789, b)
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| 16 |
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| 17 | assert_raise(TypeError){ 0.0+nil }
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| 18 | assert_raise(TypeError){ 1.0+nil }
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| 19 | end
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| 20 |
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| 21 | assert('Float#-', '15.2.9.3.2') do
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| 22 | a = 3.123456790 - 0.000000001
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| 23 | b = 5.123456789 - 1
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| 24 |
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| 25 | assert_float(3.123456789, a)
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| 26 | assert_float(4.123456789, b)
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| 27 | end
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| 28 |
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| 29 | assert('Float#*', '15.2.9.3.3') do
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| 30 | a = 3.125 * 3.125
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| 31 | b = 3.125 * 1
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| 32 |
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| 33 | assert_float(9.765625, a)
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| 34 | assert_float(3.125 , b)
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| 35 | end
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| 36 |
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| 37 | assert('Float#/', '15.2.9.3.4') do
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| 38 | a = 3.123456789 / 3.123456789
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| 39 | b = 3.123456789 / 1
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| 40 |
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| 41 | assert_float(1.0 , a)
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| 42 | assert_float(3.123456789, b)
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| 43 | end
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| 44 |
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| 45 | assert('Float#%', '15.2.9.3.5') do
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| 46 | a = 3.125 % 3.125
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| 47 | b = 3.125 % 1
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| 48 |
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| 49 | assert_float(0.0 , a)
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| 50 | assert_float(0.125, b)
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| 51 | end
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| 52 |
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| 53 | assert('Float#<=>', '15.2.9.3.6') do
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| 54 | a = 3.125 <=> 3.123
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| 55 | b = 3.125 <=> 3.125
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| 56 | c = 3.125 <=> 3.126
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| 57 | a2 = 3.125 <=> 3
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| 58 | c2 = 3.125 <=> 4
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| 59 |
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| 60 | assert_equal( 1, a)
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| 61 | assert_equal( 0, b)
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| 62 | assert_equal(-1, c)
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| 63 | assert_equal( 1, a2)
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| 64 | assert_equal(-1, c2)
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| 65 | end
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| 66 |
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| 67 | assert('Float#==', '15.2.9.3.7') do
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| 68 | assert_true 3.1 == 3.1
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| 69 | assert_false 3.1 == 3.2
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| 70 | end
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| 71 |
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| 72 | assert('Float#ceil', '15.2.9.3.8') do
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| 73 | a = 3.123456789.ceil
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| 74 | b = 3.0.ceil
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| 75 | c = -3.123456789.ceil
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| 76 | d = -3.0.ceil
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| 77 |
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| 78 | assert_equal( 4, a)
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| 79 | assert_equal( 3, b)
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| 80 | assert_equal(-3, c)
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| 81 | assert_equal(-3, d)
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| 82 | end
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| 83 |
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| 84 | assert('Float#finite?', '15.2.9.3.9') do
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[439] | 85 | assert_predicate 3.123456789, :finite?
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| 86 | assert_not_predicate 1.0 / 0.0, :finite?
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[270] | 87 | end
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| 88 |
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| 89 | assert('Float#floor', '15.2.9.3.10') do
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| 90 | a = 3.123456789.floor
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| 91 | b = 3.0.floor
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| 92 | c = -3.123456789.floor
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| 93 | d = -3.0.floor
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| 94 |
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| 95 | assert_equal( 3, a)
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| 96 | assert_equal( 3, b)
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| 97 | assert_equal(-4, c)
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| 98 | assert_equal(-3, d)
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| 99 | end
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| 100 |
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| 101 | assert('Float#infinite?', '15.2.9.3.11') do
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| 102 | a = 3.123456789.infinite?
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| 103 | b = (1.0 / 0.0).infinite?
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| 104 | c = (-1.0 / 0.0).infinite?
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| 105 |
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| 106 | assert_nil a
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| 107 | assert_equal( 1, b)
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| 108 | assert_equal(-1, c)
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| 109 | end
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| 110 |
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| 111 | assert('Float#round', '15.2.9.3.12') do
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| 112 | a = 3.123456789.round
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| 113 | b = 3.5.round
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| 114 | c = 3.4999.round
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| 115 | d = (-3.123456789).round
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| 116 | e = (-3.5).round
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| 117 | f = 12345.67.round(-1)
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| 118 | g = 3.423456789.round(0)
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| 119 | h = 3.423456789.round(1)
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| 120 | i = 3.423456789.round(3)
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| 121 |
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| 122 | assert_equal( 3, a)
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| 123 | assert_equal( 4, b)
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| 124 | assert_equal( 3, c)
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| 125 | assert_equal( -3, d)
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| 126 | assert_equal( -4, e)
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| 127 | assert_equal(12350, f)
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| 128 | assert_equal( 3, g)
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| 129 | assert_float( 3.4, h)
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| 130 | assert_float(3.423, i)
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| 131 |
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| 132 | assert_equal(42.0, 42.0.round(307))
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| 133 | assert_equal(1.0e307, 1.0e307.round(2))
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| 134 |
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| 135 | inf = 1.0/0.0
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| 136 | assert_raise(FloatDomainError){ inf.round }
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| 137 | assert_raise(FloatDomainError){ inf.round(-1) }
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| 138 | assert_equal(inf, inf.round(1))
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| 139 | nan = 0.0/0.0
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| 140 | assert_raise(FloatDomainError){ nan.round }
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| 141 | assert_raise(FloatDomainError){ nan.round(-1) }
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[439] | 142 | assert_predicate(nan.round(1), :nan?)
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[270] | 143 | end
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| 144 |
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| 145 | assert('Float#to_f', '15.2.9.3.13') do
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| 146 | a = 3.123456789
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| 147 |
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| 148 | assert_float(a, a.to_f)
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| 149 | end
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| 150 |
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| 151 | assert('Float#to_i', '15.2.9.3.14') do
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| 152 | assert_equal(3, 3.123456789.to_i)
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[331] | 153 | assert_raise(FloatDomainError) { Float::INFINITY.to_i }
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| 154 | assert_raise(FloatDomainError) { (-Float::INFINITY).to_i }
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| 155 | assert_raise(FloatDomainError) { Float::NAN.to_i }
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[270] | 156 | end
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| 157 |
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| 158 | assert('Float#truncate', '15.2.9.3.15') do
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| 159 | assert_equal( 3, 3.123456789.truncate)
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| 160 | assert_equal(-3, -3.1.truncate)
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| 161 | end
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| 162 |
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| 163 | assert('Float#divmod') do
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| 164 | def check_floats exp, act
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| 165 | assert_float exp[0], act[0]
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| 166 | assert_float exp[1], act[1]
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| 167 | end
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| 168 |
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| 169 | # Note: quotients are Float because mruby does not have Bignum.
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| 170 | check_floats [ 0, 0.0], 0.0.divmod(1)
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| 171 | check_floats [ 0, 1.1], 1.1.divmod(3)
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| 172 | check_floats [ 3, 0.2], 3.2.divmod(1)
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| 173 | check_floats [ 2, 6.3], 20.3.divmod(7)
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| 174 | check_floats [-1, 1.6], -3.4.divmod(5)
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| 175 | check_floats [-2, -0.5], 25.5.divmod(-13)
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| 176 | check_floats [ 1, -6.6], -13.6.divmod(-7)
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| 177 | check_floats [ 3, 0.2], 9.8.divmod(3.2)
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| 178 | end
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| 179 |
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| 180 | assert('Float#nan?') do
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[439] | 181 | assert_predicate(0.0/0.0, :nan?)
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| 182 | assert_not_predicate(0.0, :nan?)
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| 183 | assert_not_predicate(1.0/0.0, :nan?)
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| 184 | assert_not_predicate(-1.0/0.0, :nan?)
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[270] | 185 | end
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| 186 |
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| 187 | assert('Float#<<') do
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| 188 | # Left Shift by one
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| 189 | assert_equal 46, 23.0 << 1
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| 190 |
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| 191 | # Left Shift by a negative is Right Shift
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| 192 | assert_equal 23, 46.0 << -1
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| 193 | end
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| 194 |
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| 195 | assert('Float#>>') do
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| 196 | # Right Shift by one
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| 197 | assert_equal 23, 46.0 >> 1
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| 198 |
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| 199 | # Right Shift by a negative is Left Shift
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| 200 | assert_equal 46, 23.0 >> -1
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| 201 |
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| 202 | # Don't raise on large Right Shift
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| 203 | assert_equal 0, 23.0 >> 128
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| 204 |
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| 205 | # Don't raise on large Right Shift
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| 206 | assert_equal(-1, -23.0 >> 128)
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| 207 | end
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[439] | 208 |
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| 209 | assert('Float#to_s') do
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| 210 | uses_float = 4e38.infinite? # enable MRB_USE_FLOAT?
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| 211 |
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| 212 | assert_equal("Infinity", Float::INFINITY.to_s)
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| 213 | assert_equal("-Infinity", (-Float::INFINITY).to_s)
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| 214 | assert_equal("NaN", Float::NAN.to_s)
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| 215 | assert_equal("0", 0.0.to_s)
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| 216 | assert_equal("-0", -0.0.to_s)
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| 217 | assert_equal("-3.25", -3.25.to_s)
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| 218 | assert_equal("50", 50.0.to_s)
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| 219 | assert_equal("0.0125", 0.0125.to_s)
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| 220 | assert_equal("-0.0125", -0.0125.to_s)
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| 221 | assert_equal("1.0e-10", 0.0000000001.to_s)
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| 222 | assert_equal("-1.0e-10", -0.0000000001.to_s)
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| 223 | assert_equal("1.0e+20", 1e20.to_s)
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| 224 | assert_equal("-1.0e+20", -1e20.to_s)
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| 225 | assert_equal("1.0e+16", 10000000000000000.0.to_s)
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| 226 | assert_equal("-1.0e+16", -10000000000000000.0.to_s)
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| 227 | assert_equal("100000", 100000.0.to_s)
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| 228 | assert_equal("-100000", -100000.0.to_s)
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| 229 | if uses_float
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| 230 | assert_equal("1.0e+08", 100000000.0.to_s)
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| 231 | assert_equal("-1.0e+08", -100000000.0.to_s)
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| 232 | assert_equal("1.0e+07", 10000000.0.to_s)
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| 233 | assert_equal("-1.0e+07", -10000000.0.to_s)
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| 234 | else
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| 235 | assert_equal("1.0e+15", 1000000000000000.0.to_s)
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| 236 | assert_equal("-1.0e+15", -1000000000000000.0.to_s)
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| 237 | assert_equal("100000000000000", 100000000000000.0.to_s)
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| 238 | assert_equal("-100000000000000", -100000000000000.0.to_s)
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| 239 | end
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| 240 | end
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| 241 |
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| 242 | assert('Float#eql?') do
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| 243 | assert_operator(5.0, :eql?, 5.0)
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| 244 | assert_not_operator(5.0, :eql?, 5)
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| 245 | assert_not_operator(5.0, :eql?, "5.0")
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| 246 | end
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| 247 |
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| 248 | end # const_defined?(:Float)
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