Implement Math.pow using FPU instructions and inline it in crankshaft (ia32).

test/mjsunit/math-pow.js

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+// Flags: --allow-natives-syntax
 // Tests the special cases specified by ES 15.8.2.13
 
-// Simple sanity check
-assertEquals(4, Math.pow(2, 2));
-assertEquals(2147483648, Math.pow(2, 31));
-assertEquals(0.25, Math.pow(2, -2));
-assertEquals(0.0625, Math.pow(2, -4));
-assertEquals(1, Math.pow(1, 100));
-assertEquals(0, Math.pow(0, 1000));
+function test() {
+  // Simple sanity check
+  assertEquals(4, Math.pow(2, 2));
+  assertEquals(2147483648, Math.pow(2, 31));
+  assertEquals(0.25, Math.pow(2, -2));
+  assertEquals(0.0625, Math.pow(2, -4));
+  assertEquals(1, Math.pow(1, 100));
+  assertEquals(0, Math.pow(0, 1000));
 
-// Spec tests
-assertEquals(NaN, Math.pow(2, NaN));
-assertEquals(NaN, Math.pow(+0, NaN));
-assertEquals(NaN, Math.pow(-0, NaN));
-assertEquals(NaN, Math.pow(Infinity, NaN));
-assertEquals(NaN, Math.pow(-Infinity, NaN));
+  // Spec tests
+  assertEquals(NaN, Math.pow(2, NaN));
+  assertEquals(NaN, Math.pow(+0, NaN));
+  assertEquals(NaN, Math.pow(-0, NaN));
+  assertEquals(NaN, Math.pow(Infinity, NaN));
+  assertEquals(NaN, Math.pow(-Infinity, NaN));
 
-assertEquals(1, Math.pow(NaN, +0));
-assertEquals(1, Math.pow(NaN, -0));
+  assertEquals(1, Math.pow(NaN, +0));
+  assertEquals(1, Math.pow(NaN, -0));
 
-assertEquals(NaN, Math.pow(NaN, NaN));
-assertEquals(NaN, Math.pow(NaN, 2.2));
-assertEquals(NaN, Math.pow(NaN, 1));
-assertEquals(NaN, Math.pow(NaN, -1));
-assertEquals(NaN, Math.pow(NaN, -2.2));
-assertEquals(NaN, Math.pow(NaN, Infinity));
-assertEquals(NaN, Math.pow(NaN, -Infinity));
+  assertEquals(NaN, Math.pow(NaN, NaN));
+  assertEquals(NaN, Math.pow(NaN, 2.2));
+  assertEquals(NaN, Math.pow(NaN, 1));
+  assertEquals(NaN, Math.pow(NaN, -1));
+  assertEquals(NaN, Math.pow(NaN, -2.2));
+  assertEquals(NaN, Math.pow(NaN, Infinity));
+  assertEquals(NaN, Math.pow(NaN, -Infinity));
 
-assertEquals(Infinity, Math.pow(1.1, Infinity));
-assertEquals(Infinity, Math.pow(-1.1, Infinity));
-assertEquals(Infinity, Math.pow(2, Infinity));
-assertEquals(Infinity, Math.pow(-2, Infinity));
+  assertEquals(Infinity, Math.pow(1.1, Infinity));
+  assertEquals(Infinity, Math.pow(-1.1, Infinity));
+  assertEquals(Infinity, Math.pow(2, Infinity));
+  assertEquals(Infinity, Math.pow(-2, Infinity));
 
-// Because +0 == -0, we need to compare 1/{+,-}0 to {+,-}Infinity
-assertEquals(+Infinity, 1/Math.pow(1.1, -Infinity));
-assertEquals(+Infinity, 1/Math.pow(-1.1, -Infinity));
-assertEquals(+Infinity, 1/Math.pow(2, -Infinity));
-assertEquals(+Infinity, 1/Math.pow(-2, -Infinity));
+  // Because +0 == -0, we need to compare 1/{+,-}0 to {+,-}Infinity
+  assertEquals(+Infinity, 1/Math.pow(1.1, -Infinity));
+  assertEquals(+Infinity, 1/Math.pow(-1.1, -Infinity));
+  assertEquals(+Infinity, 1/Math.pow(2, -Infinity));
+  assertEquals(+Infinity, 1/Math.pow(-2, -Infinity));
 
-assertEquals(NaN, Math.pow(1, Infinity));
-assertEquals(NaN, Math.pow(1, -Infinity));
-assertEquals(NaN, Math.pow(-1, Infinity));
-assertEquals(NaN, Math.pow(-1, -Infinity));
+  assertEquals(NaN, Math.pow(1, Infinity));
+  assertEquals(NaN, Math.pow(1, -Infinity));
+  assertEquals(NaN, Math.pow(-1, Infinity));
+  assertEquals(NaN, Math.pow(-1, -Infinity));
 
-assertEquals(+0, Math.pow(0.1, Infinity));
-assertEquals(+0, Math.pow(-0.1, Infinity));
-assertEquals(+0, Math.pow(0.999, Infinity));
-assertEquals(+0, Math.pow(-0.999, Infinity));
+  assertEquals(+0, Math.pow(0.1, Infinity));
+  assertEquals(+0, Math.pow(-0.1, Infinity));
+  assertEquals(+0, Math.pow(0.999, Infinity));
+  assertEquals(+0, Math.pow(-0.999, Infinity));
 
-assertEquals(Infinity, Math.pow(0.1, -Infinity));
-assertEquals(Infinity, Math.pow(-0.1, -Infinity));
-assertEquals(Infinity, Math.pow(0.999, -Infinity));
-assertEquals(Infinity, Math.pow(-0.999, -Infinity));
+  assertEquals(Infinity, Math.pow(0.1, -Infinity));
+  assertEquals(Infinity, Math.pow(-0.1, -Infinity));
+  assertEquals(Infinity, Math.pow(0.999, -Infinity));
+  assertEquals(Infinity, Math.pow(-0.999, -Infinity));
 
-assertEquals(Infinity, Math.pow(Infinity, 0.1));
-assertEquals(Infinity, Math.pow(Infinity, 2));
+  assertEquals(Infinity, Math.pow(Infinity, 0.1));
+  assertEquals(Infinity, Math.pow(Infinity, 2));
 
-assertEquals(+Infinity, 1/Math.pow(Infinity, -0.1));
-assertEquals(+Infinity, 1/Math.pow(Infinity, -2));
+  assertEquals(+Infinity, 1/Math.pow(Infinity, -0.1));
+  assertEquals(+Infinity, 1/Math.pow(Infinity, -2));
 
-assertEquals(-Infinity, Math.pow(-Infinity, 3));
-assertEquals(-Infinity, Math.pow(-Infinity, 13));
+  assertEquals(-Infinity, Math.pow(-Infinity, 3));
+  assertEquals(-Infinity, Math.pow(-Infinity, 13));
 
-assertEquals(Infinity, Math.pow(-Infinity, 3.1));
-assertEquals(Infinity, Math.pow(-Infinity, 2));
+  assertEquals(Infinity, Math.pow(-Infinity, 3.1));
+  assertEquals(Infinity, Math.pow(-Infinity, 2));
 
-assertEquals(-Infinity, 1/Math.pow(-Infinity, -3));
-assertEquals(-Infinity, 1/Math.pow(-Infinity, -13));
+  assertEquals(-Infinity, 1/Math.pow(-Infinity, -3));
+  assertEquals(-Infinity, 1/Math.pow(-Infinity, -13));
 
-assertEquals(+Infinity, 1/Math.pow(-Infinity, -3.1));
-assertEquals(+Infinity, 1/Math.pow(-Infinity, -2));
+  assertEquals(+Infinity, 1/Math.pow(-Infinity, -3.1));
+  assertEquals(+Infinity, 1/Math.pow(-Infinity, -2));
 
-assertEquals(+Infinity, 1/Math.pow(+0, 1.1));
-assertEquals(+Infinity, 1/Math.pow(+0, 2));
+  assertEquals(+Infinity, 1/Math.pow(+0, 1.1));
+  assertEquals(+Infinity, 1/Math.pow(+0, 2));
 
-assertEquals(Infinity, Math.pow(+0, -1.1));
-assertEquals(Infinity, Math.pow(+0, -2));
+  assertEquals(Infinity, Math.pow(+0, -1.1));
+  assertEquals(Infinity, Math.pow(+0, -2));
 
-assertEquals(-Infinity, 1/Math.pow(-0, 3));
-assertEquals(-Infinity, 1/Math.pow(-0, 13));
+  assertEquals(-Infinity, 1/Math.pow(-0, 3));
+  assertEquals(-Infinity, 1/Math.pow(-0, 13));
 
-assertEquals(+Infinity, 1/Math.pow(-0, 3.1));
-assertEquals(+Infinity, 1/Math.pow(-0, 2));
+  assertEquals(+Infinity, 1/Math.pow(-0, 3.1));
+  assertEquals(+Infinity, 1/Math.pow(-0, 2));
 
-assertEquals(-Infinity, Math.pow(-0, -3));
-assertEquals(-Infinity, Math.pow(-0, -13));
+  assertEquals(-Infinity, Math.pow(-0, -3));
+  assertEquals(-Infinity, Math.pow(-0, -13));
 
-assertEquals(Infinity, Math.pow(-0, -3.1));
-assertEquals(Infinity, Math.pow(-0, -2));
+  assertEquals(Infinity, Math.pow(-0, -3.1));
+  assertEquals(Infinity, Math.pow(-0, -2));
 
-assertEquals(NaN, Math.pow(-0.00001, 1.1));
-assertEquals(NaN, Math.pow(-0.00001, -1.1));
-assertEquals(NaN, Math.pow(-1.1, 1.1));
-assertEquals(NaN, Math.pow(-1.1, -1.1));
-assertEquals(NaN, Math.pow(-2, 1.1));
-assertEquals(NaN, Math.pow(-2, -1.1));
-assertEquals(NaN, Math.pow(-1000, 1.1));
-assertEquals(NaN, Math.pow(-1000, -1.1));
+  assertEquals(NaN, Math.pow(-0.00001, 1.1));
+  assertEquals(NaN, Math.pow(-0.00001, -1.1));
+  assertEquals(NaN, Math.pow(-1.1, 1.1));
+  assertEquals(NaN, Math.pow(-1.1, -1.1));
+  assertEquals(NaN, Math.pow(-2, 1.1));
+  assertEquals(NaN, Math.pow(-2, -1.1));
+  assertEquals(NaN, Math.pow(-1000, 1.1));
+  assertEquals(NaN, Math.pow(-1000, -1.1));
 
-assertEquals(+Infinity, 1/Math.pow(-0, 0.5));
-assertEquals(+Infinity, 1/Math.pow(-0, 0.6));
-assertEquals(-Infinity, 1/Math.pow(-0, 1));
-assertEquals(-Infinity, 1/Math.pow(-0, 10000000001));
+  assertEquals(+Infinity, 1/Math.pow(-0, 0.5));
+  assertEquals(+Infinity, 1/Math.pow(-0, 0.6));
+  assertEquals(-Infinity, 1/Math.pow(-0, 1));
+  assertEquals(-Infinity, 1/Math.pow(-0, 10000000001));
 
-assertEquals(+Infinity, Math.pow(-0, -0.5));
-assertEquals(+Infinity, Math.pow(-0, -0.6));
-assertEquals(-Infinity, Math.pow(-0, -1));
-assertEquals(-Infinity, Math.pow(-0, -10000000001));
+  assertEquals(+Infinity, Math.pow(-0, -0.5));
+  assertEquals(+Infinity, Math.pow(-0, -0.6));
+  assertEquals(-Infinity, Math.pow(-0, -1));
+  assertEquals(-Infinity, Math.pow(-0, -10000000001));
 
+  // Tests from Sputnik S8.5_A13_T1.
+  assertTrue((1*((Math.pow(2,53))-1)*(Math.pow(2,-1074))) === 4.4501477170144023e-308);

[ulan, 2011/12/01 18:11:26]

Lines are too long.

+  assertTrue((1*(Math.pow(2,52))*(Math.pow(2,-1074))) === 2.2250738585072014e-308);
+  assertTrue((-1*(Math.pow(2,52))*(Math.pow(2,-1074))) === -2.2250738585072014e-308);
+}
 
-
-// Tests from Sputnik S8.5_A13_T1.
-assertTrue((1*((Math.pow(2,53))-1)*(Math.pow(2,-1074))) === 4.4501477170144023e-308);
-assertTrue((1*(Math.pow(2,52))*(Math.pow(2,-1074))) === 2.2250738585072014e-308);
-assertTrue((-1*(Math.pow(2,52))*(Math.pow(2,-1074))) === -2.2250738585072014e-308);
+test();
+test();
+%OptimizeFunctionOnNextCall(test);
+test();