LayoutTests/fast/js/script-tests/math.js

   1 description(
   2
   3 "This test checks the behavior of the Math object as described in 15.8 of the language specification."
   4
   5 );
   6
   7 shouldBe("Math.abs(NaN)", "NaN");
   8 shouldBe("Math.abs(0)", "0");
   9 shouldBe("Math.abs(-0)", "0");
  10 shouldBe("Math.abs(1)", "1");
  11 shouldBe("Math.abs(-1)", "1");
  12 shouldBe("Math.abs(Number.MIN_VALUE)", "Number.MIN_VALUE");
  13 shouldBe("Math.abs(-Number.MIN_VALUE)", "Number.MIN_VALUE");
  14 shouldBe("Math.abs(Number.MAX_VALUE)", "Number.MAX_VALUE");
  15 shouldBe("Math.abs(-Number.MAX_VALUE)", "Number.MAX_VALUE");
  16 shouldBe("Math.abs(Infinity)", "Infinity");
  17 shouldBe("Math.abs(-Infinity)", "Infinity");
  18
  19 shouldBe("Math.acos(NaN)", "NaN");
  20 shouldBe("Math.acos(-0)", "Math.acos(0)");
  21 shouldBe("Math.acos(1)", "0");
  22 shouldBe("Math.acos(1.1)", "NaN");
  23 shouldBe("Math.acos(-1.1)", "NaN");
  24 shouldBe("Math.acos(Infinity)", "NaN");
  25 shouldBe("Math.acos(-Infinity)", "NaN");
  26
  27 shouldBe("Math.asin(NaN)", "NaN");
  28 shouldBe("Math.asin(0)", "0");
  29 shouldBe("Math.asin(-0)", "-0");
  30 shouldBe("Math.asin(1)", "-Math.asin(-1)");
  31 shouldBe("Math.asin(1.1)", "NaN");
  32 shouldBe("Math.asin(-1.1)", "NaN");
  33 shouldBe("Math.asin(Infinity)", "NaN");
  34 shouldBe("Math.asin(-Infinity)", "NaN");
  35
  36 shouldBe("Math.atan(NaN)", "NaN");
  37 shouldBe("Math.atan(0)", "0");
  38 shouldBe("Math.atan(-0)", "-0");
  39 shouldBe("Math.atan(Infinity)", "-Math.atan(-Infinity)");
  40
  41 shouldBe("Math.atan2(NaN, NaN)", "NaN");
  42 shouldBe("Math.atan2(NaN, 0)", "NaN");
  43 shouldBe("Math.atan2(NaN, -0)", "NaN");
  44 shouldBe("Math.atan2(NaN, 1)", "NaN");
  45 shouldBe("Math.atan2(NaN, Infinity)", "NaN");
  46 shouldBe("Math.atan2(NaN, -Infinity)", "NaN");
  47 shouldBe("Math.atan2(0, NaN)", "NaN");
  48 shouldBe("Math.atan2(-0, NaN)", "NaN");
  49 shouldBe("Math.atan2(1, NaN)", "NaN");
  50 shouldBe("Math.atan2(Infinity, NaN)", "NaN");
  51 shouldBe("Math.atan2(-Infinity, NaN)", "NaN");
  52
  53 // Regression test for Bug 26978 (https://bugs.webkit.org/show_bug.cgi?id=26978)
  54 var testStr = "";
  55 var v = { valueOf: function() { testStr += "one"; return 1; } };
  56 var w = { valueOf: function() { testStr += "two"; return 2; } };
  57 Math.atan2(v, w);
  58 shouldBe('testStr', '\"onetwo\"');
  59
  60 /*
  61 • Ify>0andxis+0, theresult isanimplementation-dependent approximationto +π/2.
  62 • Ify>0andxis−0, theresult isanimplementation-dependent approximationto +π/2.
  63 • Ifyis+0andx>0, theresult is+0.
  64 • Ifyis+0andxis+0, theresult is+0.
  65 • Ifyis+0andxis−0, theresult isanimplementation-dependent approximationto +π.
  66 • Ifyis+0andx<0, theresult isanimplementation-dependent approximationto +π.
  67 • Ifyis−0andx>0, theresult is−0.
  68 • Ifyis−0andxis+0, theresult is−0.
  69 • Ifyis−0andxis−0, theresult isanimplementation-dependent approximationto −π.
  70 • Ifyis−0andx<0, theresult isanimplementation-dependent approximationto −π.
  71 • Ify<0andxis+0, theresult isanimplementation-dependent approximationto −π/2.
  72 • Ify<0andxis−0, theresult isanimplementation-dependent approximationto −π/2.
  73 • Ify>0andyisfiniteandxis+∞, theresult is+0.
  74 • Ify>0andyisfiniteandxis−∞, theresult ifanimplementation-dependent approximationto +π.
  75 • Ify<0andyisfiniteandxis+∞, theresult is−0.
  76 • Ify<0andyisfiniteandxis−∞, theresult isanimplementation-dependent approximationto−π.
  77 • Ifyis+∞andxisfinite, theresult isanimplementation-dependent approximationto +π/2.
  78 • Ifyis−∞andxisfinite, theresult isanimplementation-dependent approximationto −π/2.
  79 • Ifyis+∞andxis+∞, theresult isanimplementation-dependent approximationto +π/4.
  80 • Ifyis+∞andxis−∞, theresult isanimplementation-dependent approximationto +3π/4.
  81 • Ifyis−∞andxis+∞, theresult isanimplementation-dependent approximationto −π/4.
  82 • Ifyis−∞andxis−∞, theresult isanimplementation-dependent approximationto −3π/4.
  83 */
  84
  85 shouldBe("Math.ceil(NaN)", "NaN");
  86 shouldBe("Math.ceil(0)", "0");
  87 shouldBe("Math.ceil(-0)", "-0");
  88 shouldBe("Math.ceil(-0.5)", "-0");
  89 shouldBe("Math.ceil(1)", "1");
  90 shouldBe("Math.ceil(-1)", "-1");
  91 shouldBe("Math.ceil(1.1)", "2");
  92 shouldBe("Math.ceil(-1.1)", "-1");
  93 shouldBe("Math.ceil(Number.MIN_VALUE)", "1");
  94 shouldBe("Math.ceil(-Number.MIN_VALUE)", "-0");
  95 shouldBe("Math.ceil(Number.MAX_VALUE)", "Number.MAX_VALUE");
  96 shouldBe("Math.ceil(-Number.MAX_VALUE)", "-Number.MAX_VALUE");
  97 shouldBe("Math.ceil(Infinity)", "Infinity");
  98 shouldBe("Math.ceil(-Infinity)", "-Infinity");
  99
 100 shouldBe("Math.cos(NaN)", "NaN");
 101 shouldBe("Math.cos(0)", "1");
 102 shouldBe("Math.cos(-0)", "1");
 103 shouldBe("Math.cos(Infinity)", "NaN");
 104 shouldBe("Math.cos(-Infinity)", "NaN");
 105
 106 shouldBe("Math.exp(NaN)", "NaN");
 107 shouldBe("Math.exp(0)", "1");
 108 shouldBe("Math.exp(-0)", "1");
 109 shouldBe("Math.exp(Infinity)", "Infinity");
 110 shouldBe("Math.exp(-Infinity)", "0");
 111
 112 shouldBe("Math.floor(NaN)", "NaN");
 113 shouldBe("Math.floor(0)", "0");
 114 shouldBe("Math.floor(-0)", "-0");
 115 shouldBe("Math.floor(0.5)", "0");
 116 shouldBe("Math.floor(1)", "1");
 117 shouldBe("Math.floor(-1)", "-1");
 118 shouldBe("Math.floor(1.1)", "1");
 119 shouldBe("Math.floor(-1.1)", "-2");
 120 shouldBe("Math.floor(Number.MIN_VALUE)", "0");
 121 shouldBe("Math.floor(-Number.MIN_VALUE)", "-1");
 122 shouldBe("Math.floor(Number.MAX_VALUE)", "Number.MAX_VALUE");
 123 shouldBe("Math.floor(-Number.MAX_VALUE)", "-Number.MAX_VALUE");
 124 shouldBe("Math.floor(Infinity)", "Infinity");
 125 shouldBe("Math.floor(-Infinity)", "-Infinity");
 126
 127 shouldBe("Math.log(NaN)", "NaN");
 128 shouldBe("Math.log(0)", "-Infinity");
 129 shouldBe("Math.log(-0)", "-Infinity");
 130 shouldBe("Math.log(1)", "0");
 131 shouldBe("Math.log(-1)", "NaN");
 132 shouldBe("Math.log(-1.1)", "NaN");
 133 shouldBe("Math.log(Infinity)", "Infinity");
 134 shouldBe("Math.log(-Infinity)", "NaN");
 135
 136 shouldBe("Math.max()", "-Infinity");
 137 shouldBe("Math.max(NaN)", "NaN");
 138 shouldBe("Math.max(NaN,1)", "NaN");
 139 shouldBe("Math.max(0)", "0");
 140 shouldBe("Math.max(-0)", "-0");
 141 shouldBe("Math.max(-0, 0)", "0");
 142
 143 shouldBe("Math.min()", "Infinity");
 144 shouldBe("Math.min(NaN)", "NaN");
 145 shouldBe("Math.min(NaN,1)", "NaN");
 146 shouldBe("Math.min(0)", "0");
 147 shouldBe("Math.min(-0)", "-0");
 148 shouldBe("Math.min(-0, 0)", "-0");
 149
 150 shouldBe("Math.pow(NaN, NaN)", "NaN");
 151 shouldBe("Math.pow(NaN, 0)", "1");
 152 shouldBe("Math.pow(NaN, -0)", "1");
 153 shouldBe("Math.pow(NaN, 1)", "NaN");
 154 shouldBe("Math.pow(NaN, Infinity)", "NaN");
 155 shouldBe("Math.pow(NaN, -Infinity)", "NaN");
 156 shouldBe("Math.pow(0, NaN)", "NaN");
 157 shouldBe("Math.pow(-0, NaN)", "NaN");
 158 shouldBe("Math.pow(1, NaN)", "NaN");
 159 shouldBe("Math.pow(Infinity, NaN)", "NaN");
 160 shouldBe("Math.pow(-Infinity, NaN)", "NaN");
 161
 162 /*
 163 • Ifabs(x)>1andyis+∞, theresult is+∞.
 164 • Ifabs(x)>1andyis−∞, theresult is+0.
 165 • Ifabs(x)==1andyis+∞, theresult isNaN.
 166 • Ifabs(x)==1andyis−∞, theresult isNaN.
 167 • Ifabs(x)<1andyis+∞, theresult is+0.
 168 • Ifabs(x)<1andyis−∞, theresult is+∞.
 169 • Ifxis+∞andy>0, theresult is+∞.
 170 • Ifxis+∞andy<0, theresult is+0.
 171 • Ifxis−∞andy>0andyisanoddinteger, theresult is−∞.
 172 • Ifxis−∞andy>0andyisnot anoddinteger, theresult is+∞.
 173 • Ifxis−∞andy<0andyisanoddinteger, theresult is−0.
 174 • Ifxis−∞andy<0andyisnot anoddinteger, theresult is+0.
 175 • Ifxis+0andy>0, theresult is+0.
 176 • Ifxis+0andy<0, theresult is+∞.
 177 • Ifxis−0andy>0andyisanoddinteger, theresult is−0.
 178 • Ifxis−0andy>0andyisnot anoddinteger, theresult is+0.
 179 • Ifxis−0andy<0andyisanoddinteger, theresult is−∞.
 180 • Ifxis−0andy<0andyisnot anoddinteger, theresult is+∞.
 181 • Ifx<0andxisfiniteandyisfiniteandyisnot aninteger, theresult isNaN.
 182 */
 183
 184 shouldBe("Math.round(NaN)", "NaN");
 185 shouldBe("Math.round(0)", "0");
 186 shouldBe("Math.round(-0)", "-0");
 187 shouldBe("Math.round(0.4)", "0");
 188 shouldBe("Math.round(-0.4)", "-0");
 189 shouldBe("Math.round(0.5)", "1");
 190 shouldBe("Math.round(-0.5)", "-0");
 191 shouldBe("Math.round(0.6)", "1");
 192 shouldBe("Math.round(-0.6)", "-1");
 193 shouldBe("Math.round(1)", "1");
 194 shouldBe("Math.round(-1)", "-1");
 195 shouldBe("Math.round(1.1)", "1");
 196 shouldBe("Math.round(-1.1)", "-1");
 197 shouldBe("Math.round(1.5)", "2");
 198 shouldBe("Math.round(-1.5)", "-1");
 199 shouldBe("Math.round(1.6)", "2");
 200 shouldBe("Math.round(-1.6)", "-2");
 201 shouldBe("Math.round(8640000000000000)", "8640000000000000");
 202 // The following is expected. Double can't represent .5 in this case.
 203 shouldBe("Math.round(8640000000000000.5)", "8640000000000000");
 204 shouldBe("Math.round(8640000000000001)", "8640000000000001");
 205 shouldBe("Math.round(8640000000000002)", "8640000000000002");
 206 shouldBe("Math.round(9007199254740990)", "9007199254740990");
 207 shouldBe("Math.round(9007199254740991)", "9007199254740991");
 208 shouldBe("Math.round(1.7976931348623157e+308)", "1.7976931348623157e+308");
 209 shouldBe("Math.round(-8640000000000000)", "-8640000000000000");
 210 shouldBe("Math.round(-8640000000000001)", "-8640000000000001");
 211 shouldBe("Math.round(-8640000000000002)", "-8640000000000002");
 212 shouldBe("Math.round(-9007199254740990)", "-9007199254740990");
 213 shouldBe("Math.round(-9007199254740991)", "-9007199254740991");
 214 shouldBe("Math.round(-1.7976931348623157e+308)", "-1.7976931348623157e+308");
 215 shouldBe("Math.round(Infinity)", "Infinity");
 216 shouldBe("Math.round(-Infinity)", "-Infinity");
 217
 218 shouldBe("Math.sin(NaN)", "NaN");
 219 shouldBe("Math.sin(0)", "0");
 220 shouldBe("Math.sin(-0)", "-0");
 221 shouldBe("Math.sin(Infinity)", "NaN");
 222 shouldBe("Math.sin(-Infinity)", "NaN");
 223
 224 shouldBe("Math.sqrt(NaN)", "NaN");
 225 shouldBe("Math.sqrt(0)", "0");
 226 shouldBe("Math.sqrt(-0)", "-0");
 227 shouldBe("Math.sqrt(1)", "1");
 228 shouldBe("Math.sqrt(-1)", "NaN");
 229 shouldBe("Math.sqrt(Infinity)", "Infinity");
 230 shouldBe("Math.sqrt(-Infinity)", "NaN");
 231
 232 shouldBe("Math.tan(NaN)", "NaN");
 233 shouldBe("Math.tan(0)", "0");
 234 shouldBe("Math.tan(-0)", "-0");
 235 shouldBe("Math.tan(Infinity)", "NaN");
 236 shouldBe("Math.tan(-Infinity)", "NaN");
 237
 238 successfullyParsed = true;