math-binary.js - mozsearch

Enable keyboard shortcuts

// |jit-test| --canonicalize-nan-at-uses=on

load(libdir + "nans.js");

function testBinary(fn) {

  testWithFloatTypedArrays((FloatArray, UintArray, NaNs, BinaryMath) => {

    var f = new FloatArray(2);

    var u = new UintArray(f.buffer);

    for (var i = 0; i < 100; ++i) {

      u[0] = NaNs[i % NaNs.length];

      var x = BinaryMath(f[0], f[0]);

      // Store possibly tainted value.

      f[1] = x;

      assertEq(f[1], NaN);

      assertEq(x, NaN);

      assertSameNaNPayload(FloatArray, u[0], u[1]);

    for (var i = 0; i < 100; ++i) {

      u[0] = NaNs[i % NaNs.length];

      // With constant non-NaN operand.

      var x = BinaryMath(0, f[0]);

      // Store possibly tainted value.

      f[1] = x;

      assertEq(f[1], NaN);

      assertEq(x, NaN);

      assertSameNaNPayload(FloatArray, u[0], u[1]);

    for (var i = 0; i < 100; ++i) {

      u[0] = NaNs[i % NaNs.length];

      // With constant NaN operand.

      var x = BinaryMath(NaN, f[0]);

      // Store possibly tainted value.

      f[1] = x;

      assertEq(f[1], NaN);

      assertEq(x, NaN);

      assertSameNaNPayload(FloatArray, u[0], u[1]);

  }, fn);

testBinary(Math.max);

testBinary(Math.min);

testBinary(Math.pow);

testBinary(Math.atan2);

testBinary(Math.hypot);