test/mjsunit/math-pow.js

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// 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));

// 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(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));

// 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(+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(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, 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, 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(+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, 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, Math.pow(-0, -3));
assertEquals(-Infinity, Math.pow(-0, -13));

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(+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));



// 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);