JavaScriptCore-7601.1.46.3.tar.gz

[apple/javascriptcore.git] / tests / stress / math-pow-integer-exponent-fastpath.js

diff --git a/tests/stress/math-pow-integer-exponent-fastpath.js b/tests/stress/math-pow-integer-exponent-fastpath.js
new file mode 100644 (file)
index 0000000..d606c44
--- /dev/null
+++ b/tests/stress/math-pow-integer-exponent-fastpath.js
@@ -0,0 +1,56 @@
+function valuesAreClose(a, b) {
+    return Math.abs(a / b) - 1 < 1e-10;
+}
+
+// Small exponent values are handled through a simpler inline loop. Test that it is not observable.
+function mathPowDoubleDoubleTestExponentFifty(x, y) {
+    return Math.pow(x, y)
+}
+noInline(mathPowDoubleDoubleTestExponentFifty);
+
+function mathPowDoubleIntTestExponentFifty(x, y) {
+    return Math.pow(x, y)
+}
+noInline(mathPowDoubleIntTestExponentFifty);
+function testExponentFifty(x, y, expected) {
+    for (var i = 0; i < 10000; ++i) {
+        var result = mathPowDoubleDoubleTestExponentFifty(x, y);
+        if (!valuesAreClose(result, expected))
+            throw "Error: bad result, Math.pow(" + x + ", " + y + ") = " + result + " expected value close to " + expected;
+    }
+    var integerY = y | 0;
+    for (var i = 0; i < 10000; ++i) {
+        var result = mathPowDoubleIntTestExponentFifty(x, integerY);
+        if (!valuesAreClose(result, expected))
+            throw "Error: bad result, Math.pow(" + x + ", " + integerY + ") = " + result + " expected value close to " + expected;
+    }
+}
+noInline(testExponentFifty);
+testExponentFifty(53.70901164133102, 50.0, 3.179494118120144e+86);
+testExponentFifty(53.70901164133102, -10.0, 5.006432842621192e-18);
+
+function mathPowDoubleDoubleTestExponentTenThousands(x, y) {
+    return Math.pow(x, y)
+}
+noInline(mathPowDoubleDoubleTestExponentTenThousands);
+
+function mathPowDoubleIntTestExponentTenThousands(x, y) {
+    return Math.pow(x, y)
+}
+noInline(mathPowDoubleIntTestExponentTenThousands);
+function testExponentTenThousands(x, y, expected) {
+    for (var i = 0; i < 10000; ++i) {
+        var result = mathPowDoubleDoubleTestExponentTenThousands(x, y);
+        if (!valuesAreClose(result, expected))
+            throw "Error: bad result, Math.pow(" + x + ", " + y + ") = " + result + " expected value close to " + expected;
+    }
+    var integerY = y | 0;
+    for (var i = 0; i < 10000; ++i) {
+        var result = mathPowDoubleIntTestExponentTenThousands(x, integerY);
+        if (!valuesAreClose(result, expected))
+            throw "Error: bad result, Math.pow(" + x + ", " + integerY + ") = " + result + " expected value close to " + expected;
+    }
+}
+noInline(testExponentTenThousands);
+testExponentTenThousands(1.001, 10000.0, 21916.681339048373);
+testExponentTenThousands(1.001, -1.0, 0.9990009990009991);
\ No newline at end of file