1 | ##
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2 | # Float ISO Test
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3 |
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4 | if Object.const_defined?(:Float)
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5 |
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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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85 | assert_predicate 3.123456789, :finite?
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86 | assert_not_predicate 1.0 / 0.0, :finite?
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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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142 | assert_predicate(nan.round(1), :nan?)
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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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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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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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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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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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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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