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