function opaqueAbs(value) { return Math.abs(value)|0; } noInline(opaqueAbs); for (let i = 0; i < 1e4; ++i) { var positiveResult = opaqueAbs(i); if (positiveResult !== i) throw "Incorrect result at i = " + i + " result = " + positiveResult; var negativeResult = opaqueAbs(-i); if (negativeResult !== i) throw "Incorrect result at -i = " + -i + " result = " + negativeResult; } var intMax = 2147483647; var intMin = 2147483647; var intMaxResult = opaqueAbs(intMax); if (intMaxResult !== intMax) throw "Incorrect result at intMax result = " + intMaxResult; var intMaxResult = opaqueAbs(intMin); if (intMaxResult !== intMin) throw "Incorrect result at intMax result = " + intMaxResult; // Numbers around IntMax/IntMin. Numbers outside the bounds are doubles and opaqueAbs() // has to OSR Exit to handle them correctly. for (let i = intMax - 1e4; i < intMax + 1e4; ++i) { var positiveResult = opaqueAbs(i); if (positiveResult !== (i|0)) throw "Incorrect result at i = " + i + " result = " + positiveResult; var negativeResult = opaqueAbs(-i); if (negativeResult !== (i|0)) throw "Incorrect result at -i = " + -i + " result = " + negativeResult; } // Edge cases and exits. if (opaqueAbs(NaN) !== 0) throw "opaqueAbs(NaN) failed."; if (opaqueAbs(Infinity) !== 0) throw "opaqueAbs(Infinity) failed."; if (opaqueAbs(-Infinity) !== 0) throw "opaqueAbs(-Infinity) failed."; if (opaqueAbs(null) !== 0) throw "opaqueAbs(null) failed."; if (opaqueAbs(undefined) !== 0) throw "opaqueAbs(undefined) failed."; if (opaqueAbs(true) !== 1) throw "opaqueAbs(true) failed."; if (opaqueAbs(false) !== 0) throw "opaqueAbs(false) failed."; if (opaqueAbs({foo:"bar"}) !== 0) throw "opaqueAbs({foo:'bar'}) failed.";