1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
|
// Copyright 2015 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax
var stdlib = this;
var foreign = {};
var heap = new ArrayBuffer(64 * 1024);
var m = (function(stdlib, foreign, heap) {
"use asm";
function hi1(i) {
i = +i;
return %_DoubleHi(i)|0;
}
function hi2(i, j) {
i = +i;
j = +j;
return %_DoubleHi(i)+%_DoubleHi(j)|0;
}
return { hi1: hi1, hi2: hi2 };
})(stdlib, foreign, heap);
assertEquals(0, m.hi1(0.0));
assertEquals(-2147483648, m.hi1(-0.0));
assertEquals(2146435072, m.hi1(Infinity));
assertEquals(-1048576, m.hi1(-Infinity));
assertEquals(0, m.hi2(0.0, 0.0));
assertEquals(-2147483648, m.hi2(0.0, -0.0));
assertEquals(-2147483648, m.hi2(-0.0, 0.0));
assertEquals(0, m.hi2(-0.0, -0.0));
for (var i = -2147483648; i < 2147483648; i += 3999773) {
assertEquals(%_DoubleHi(i), m.hi1(i));
assertEquals(i, m.hi1(%ConstructDouble(i, 0)));
assertEquals(i, m.hi1(%ConstructDouble(i, i)));
assertEquals(i+i|0, m.hi2(%ConstructDouble(i, 0), %ConstructDouble(i, 0)));
assertEquals(i+i|0, m.hi2(%ConstructDouble(i, i), %ConstructDouble(i, i)));
}
|
