Update V8 to version 4.1.0.21
This is a cherry-pick of all commits up to and including the
4.1.0.21 cherry-pick in Chromium.
Original commit message:
Version 4.1.0.21 (cherry-pick)
Merged 206e9136bde0f2b5ae8cb77afbb1e7833e5bd412
Unlink pages from the space page list after evacuation.
BUG=430201
LOG=N
R=jkummerow@chromium.org
Review URL: https://codereview.chromium.org/953813002
Cr-Commit-Position: refs/branch-heads/4.1@{#22}
Cr-Branched-From: 2e08d2a7aa9d65d269d8c57aba82eb38a8cb0a18-refs/heads/candidates@{#25353}
---
FPIIM-449
Change-Id: I8c23c7bbb70772b4858fe8a47b64fa97ee0d1f8c
diff --git a/test/mjsunit/es6/math-log2-log10.js b/test/mjsunit/es6/math-log2-log10.js
index 4479894..fa3f468 100644
--- a/test/mjsunit/es6/math-log2-log10.js
+++ b/test/mjsunit/es6/math-log2-log10.js
@@ -25,6 +25,8 @@
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+// Flags: --allow-natives-syntax
+
[Math.log10, Math.log2].forEach( function(fun) {
assertTrue(isNaN(fun(NaN)));
assertTrue(isNaN(fun(fun)));
@@ -39,7 +41,59 @@
assertEquals("Infinity", String(fun(Infinity)));
});
-for (var i = -300; i < 300; i += 0.7) {
- assertEqualsDelta(i, Math.log10(Math.pow(10, i)), 1E-13);
- assertEqualsDelta(i, Math.log2(Math.pow(2, i)), 1E-13);
+for (var i = -310; i <= 308; i += 0.5) {
+ assertEquals(i, Math.log10(Math.pow(10, i)));
+ // Square roots are tested below.
+ if (i != -0.5 && i != 0.5) assertEquals(i, Math.log2(Math.pow(2, i)));
+}
+
+// Test denormals.
+assertEquals(-307.77759430519706, Math.log10(1.5 * Math.pow(2, -1023)));
+
+// Test Math.log2(2^k) for -1074 <= k <= 1023.
+var n = -1074;
+// This loop covers n from -1074 to -1043
+for (var lowbits = 1; lowbits <= 0x80000000; lowbits *= 2) {
+ var x = %_ConstructDouble(0, lowbits);
+ assertEquals(n, Math.log2(x));
+ n++;
+}
+// This loop covers n from -1042 to -1023
+for (var hibits = 1; hibits <= 0x80000; hibits *= 2) {
+ var x = %_ConstructDouble(hibits, 0);
+ assertEquals(n, Math.log2(x));
+ n++;
+}
+// The rest of the normal values of 2^n
+var x = 1;
+for (var n = -1022; n <= 1023; ++n) {
+ var x = Math.pow(2, n);
+ assertEquals(n, Math.log2(x));
+}
+
+// Test special values.
+// Expectation isn't exactly 1/2 because Math.SQRT2 isn't exactly sqrt(2).
+assertEquals(0.5000000000000001, Math.log2(Math.SQRT2));
+
+// Expectation isn't exactly -1/2 because Math.SQRT1_2 isn't exactly sqrt(1/2).
+assertEquals(-0.4999999999999999, Math.log2(Math.SQRT1_2));
+
+assertEquals(3.321928094887362, Math.log2(10));
+assertEquals(6.643856189774724, Math.log2(100));
+
+// Test relationships
+x = 1;
+for (var k = 0; k < 1000; ++k) {
+ var y = Math.abs(Math.log2(x) + Math.log2(1/x));
+ assertEqualsDelta(0, y, 1.5e-14);
+ x *= 1.1;
+}
+
+x = Math.pow(2, -100);
+for (var k = 0; k < 1000; ++k) {
+ var y = Math.log2(x);
+ var expected = Math.log(x) / Math.LN2;
+ var err = Math.abs(y - expected) / expected;
+ assertEqualsDelta(0, err, 1e-15);
+ x *= 1.1;
}