1 |
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2 |
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3 |
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4 |
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5 | bake = ->
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6 | h = 0
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7 | s = 0
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8 | t = 0
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9 | x = 0
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10 | y = 0
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11 | z = 0
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12 |
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13 | expanding++
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14 |
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15 | save()
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16 |
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17 | p1 = pop()
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18 |
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19 | s = ispoly(p1, symbol(SYMBOL_S))
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20 | t = ispoly(p1, symbol(SYMBOL_T))
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21 | x = ispoly(p1, symbol(SYMBOL_X))
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22 | y = ispoly(p1, symbol(SYMBOL_Y))
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23 | z = ispoly(p1, symbol(SYMBOL_Z))
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24 |
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25 | if (s == 1 && t == 0 && x == 0 && y == 0 && z == 0)
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26 | p2 = symbol(SYMBOL_S)
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27 | bake_poly()
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28 | else if (s == 0 && t == 1 && x == 0 && y == 0 && z == 0)
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29 | p2 = symbol(SYMBOL_T)
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30 | bake_poly()
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31 | else if (s == 0 && t == 0 && x == 1 && y == 0 && z == 0)
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32 | p2 = symbol(SYMBOL_X)
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33 | bake_poly()
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34 | else if (s == 0 && t == 0 && x == 0 && y == 1 && z == 0)
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35 | p2 = symbol(SYMBOL_Y)
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36 | bake_poly()
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37 | else if (s == 0 && t == 0 && x == 0 && y == 0 && z == 1)
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38 | p2 = symbol(SYMBOL_Z)
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39 | bake_poly()
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40 |
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41 |
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42 |
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43 |
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44 | else if (iscons(p1)) and car(p1) != symbol(FOR)
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45 | h = tos
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46 | push(car(p1))
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47 | p1 = cdr(p1)
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48 | while (iscons(p1))
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49 | push(car(p1))
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50 | bake()
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51 | p1 = cdr(p1)
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52 | list(tos - h)
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53 | else
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54 | push(p1)
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55 |
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56 | restore()
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57 |
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58 | expanding--
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59 |
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60 | polyform = ->
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61 | h = 0
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62 |
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63 | save()
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64 |
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65 | p2 = pop()
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66 | p1 = pop()
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67 |
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68 | if (ispoly(p1, p2))
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69 | bake_poly()
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70 | else if (iscons(p1))
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71 | h = tos
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72 | push(car(p1))
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73 | p1 = cdr(p1)
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74 | while (iscons(p1))
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75 | push(car(p1))
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76 | push(p2)
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77 | polyform()
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78 | p1 = cdr(p1)
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79 | list(tos - h)
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80 | else
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81 | push(p1)
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82 |
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83 | restore()
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84 |
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85 | bake_poly = ->
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86 | h = 0
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87 | i = 0
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88 | k = 0
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89 | n = 0
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90 |
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91 | a = tos
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92 | push(p1);
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93 | push(p2);
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94 | k = coeff()
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95 | h = tos
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96 | for i in[(k - 1)..0] by -1
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97 | p1 = stack[a+i]
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98 | bake_poly_term(i)
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99 | n = tos - h
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100 | if (n > 1)
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101 | list(n)
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102 | push(symbol(ADD))
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103 | swap()
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104 | cons()
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105 | p1 = pop()
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106 | moveTos tos - k
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107 | push(p1)
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108 |
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109 |
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110 |
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111 |
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112 | bake_poly_term = (k) ->
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113 | h = 0
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114 | n = 0
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115 |
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116 | if (iszero(p1))
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117 | return
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118 |
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119 |
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120 |
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121 | if (k == 0)
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122 | if (car(p1) == symbol(ADD))
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123 | p1 = cdr(p1)
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124 | while (iscons(p1))
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125 | push(car(p1))
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126 | p1 = cdr(p1)
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127 | else
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128 | push(p1)
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129 | return
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130 |
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131 | h = tos
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132 |
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133 |
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134 |
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135 | if (car(p1) == symbol(MULTIPLY))
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136 | p1 = cdr(p1)
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137 | while (iscons(p1))
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138 | push(car(p1))
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139 | p1 = cdr(p1)
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140 | else if (!equaln(p1, 1))
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141 | push(p1)
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142 |
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143 |
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144 |
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145 | if (k == 1)
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146 | push(p2)
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147 | else
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148 | push(symbol(POWER))
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149 | push(p2)
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150 | push_integer(k)
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151 | list(3)
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152 |
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153 | n = tos - h
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154 |
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155 | if (n > 1)
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156 | list(n)
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157 | push(symbol(MULTIPLY))
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158 | swap()
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159 | cons()
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160 |
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161 |
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