Mercurial > hg > graal-compiler
annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/ExactMath.java @ 21646:645f170013a4
Fix in the scheduler for proxy node handling.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
---|---|
date | Mon, 01 Jun 2015 22:14:34 +0200 |
parents | c88ab4f1f04a |
children |
rev | line source |
---|---|
7267
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
1 /* |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved. |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
4 * |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
5 * This code is free software; you can redistribute it and/or modify it |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
6 * under the terms of the GNU General Public License version 2 only, as |
11279
494b818b527c
Adding "Classpath" exception to the classes in the com.oracle.truffle.api and the com.oracle.truffle.api.dsl package.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
9273
diff
changeset
|
7 * published by the Free Software Foundation. Oracle designates this |
494b818b527c
Adding "Classpath" exception to the classes in the com.oracle.truffle.api and the com.oracle.truffle.api.dsl package.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
9273
diff
changeset
|
8 * particular file as subject to the "Classpath" exception as provided |
494b818b527c
Adding "Classpath" exception to the classes in the com.oracle.truffle.api and the com.oracle.truffle.api.dsl package.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
9273
diff
changeset
|
9 * by Oracle in the LICENSE file that accompanied this code. |
7267
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
10 * |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
11 * This code is distributed in the hope that it will be useful, but WITHOUT |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
14 * version 2 for more details (a copy is included in the LICENSE file that |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
15 * accompanied this code). |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
16 * |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
17 * You should have received a copy of the GNU General Public License version |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
18 * 2 along with this work; if not, write to the Free Software Foundation, |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
20 * |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
22 * or visit www.oracle.com if you need additional information or have any |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
23 * questions. |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
24 */ |
9273
d27550f2f80f
Move ExactMath from truffle.api.intrinsics to truffle.api package.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
7530
diff
changeset
|
25 package com.oracle.truffle.api; |
7267
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
26 |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
27 /** |
7530
5e3d1a68664e
applied mx eclipseformat to all Java files
Doug Simon <doug.simon@oracle.com>
parents:
7267
diff
changeset
|
28 * This class contains methods that will be part of java.lang.Math starting with JDK 8. Until JDK 8 |
5e3d1a68664e
applied mx eclipseformat to all Java files
Doug Simon <doug.simon@oracle.com>
parents:
7267
diff
changeset
|
29 * is release, we duplicate them here because they are generally useful for dynamic language |
5e3d1a68664e
applied mx eclipseformat to all Java files
Doug Simon <doug.simon@oracle.com>
parents:
7267
diff
changeset
|
30 * implementations. |
7267
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
31 */ |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
32 public class ExactMath { |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
33 |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
34 public static int addExact(int x, int y) { |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
35 int r = x + y; |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
36 // HD 2-12 Overflow iff both arguments have the opposite sign of the result |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
37 if (((x ^ r) & (y ^ r)) < 0) { |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
38 throw new ArithmeticException("integer overflow"); |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
39 } |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
40 return r; |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
41 } |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
42 |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
43 public static long addExact(long x, long y) { |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
44 long r = x + y; |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
45 // HD 2-12 Overflow iff both arguments have the opposite sign of the result |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
46 if (((x ^ r) & (y ^ r)) < 0) { |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
47 throw new ArithmeticException("long overflow"); |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
48 } |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
49 return r; |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
50 } |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
51 |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
52 public static int subtractExact(int x, int y) { |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
53 int r = x - y; |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
54 // HD 2-12 Overflow iff the arguments have different signs and |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
55 // the sign of the result is different than the sign of x |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
56 if (((x ^ y) & (x ^ r)) < 0) { |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
57 throw new ArithmeticException("integer overflow"); |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
58 } |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
59 return r; |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
60 } |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
61 |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
62 public static long subtractExact(long x, long y) { |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
63 long r = x - y; |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
64 // HD 2-12 Overflow iff the arguments have different signs and |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
65 // the sign of the result is different than the sign of x |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
66 if (((x ^ y) & (x ^ r)) < 0) { |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
67 throw new ArithmeticException("long overflow"); |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
68 } |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
69 return r; |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
70 } |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
71 |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
72 public static int multiplyExact(int x, int y) { |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
73 long r = (long) x * (long) y; |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
74 if ((int) r != r) { |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
75 throw new ArithmeticException("long overflow"); |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
76 } |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
77 return (int) r; |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
78 } |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
79 |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
80 public static long multiplyExact(long x, long y) { |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
81 long r = x * y; |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
82 long ax = Math.abs(x); |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
83 long ay = Math.abs(y); |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
84 if (((ax | ay) >>> 31 != 0)) { |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
85 // Some bits greater than 2^31 that might cause overflow |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
86 // Check the result using the divide operator |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
87 // and check for the special case of Long.MIN_VALUE * -1 |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
88 if (((y != 0) && (r / y != x)) || (x == Long.MIN_VALUE && y == -1)) { |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
89 throw new ArithmeticException("long overflow"); |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
90 } |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
91 } |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
92 return r; |
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
93 } |
15691
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
94 |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
95 public static int multiplyHigh(int x, int y) { |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
96 long r = (long) x * (long) y; |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
97 return (int) (r >> 32); |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
98 } |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
99 |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
100 public static int multiplyHighUnsigned(int x, int y) { |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
101 long xl = x & 0xFFFFFFFFL; |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
102 long yl = y & 0xFFFFFFFFL; |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
103 long r = xl * yl; |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
104 return (int) (r >> 32); |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
105 } |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
106 |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
107 public static long multiplyHigh(long x, long y) { |
18163
c88ab4f1f04a
re-enabled Checkstyle with the release of 6.0 that supports Java 8; fixed existing Checkstyle warnings
Doug Simon <doug.simon@oracle.com>
parents:
15691
diff
changeset
|
108 // Checkstyle: stop |
15691
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
109 long x0, y0, z0; |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
110 long x1, y1, z1, z2, t; |
18163
c88ab4f1f04a
re-enabled Checkstyle with the release of 6.0 that supports Java 8; fixed existing Checkstyle warnings
Doug Simon <doug.simon@oracle.com>
parents:
15691
diff
changeset
|
111 // Checkstyle: resume |
15691
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
112 |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
113 x0 = x & 0xFFFFFFFFL; |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
114 x1 = x >> 32; |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
115 |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
116 y0 = y & 0xFFFFFFFFL; |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
117 y1 = y >> 32; |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
118 |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
119 z0 = x0 * y0; |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
120 t = x1 * y0 + (z0 >>> 32); |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
121 z1 = t & 0xFFFFFFFFL; |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
122 z2 = t >> 32; |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
123 z1 += x0 * y1; |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
124 |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
125 return x1 * y1 + z2 + (z1 >> 32); |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
126 } |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
127 |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
128 public static long multiplyHighUnsigned(long x, long y) { |
18163
c88ab4f1f04a
re-enabled Checkstyle with the release of 6.0 that supports Java 8; fixed existing Checkstyle warnings
Doug Simon <doug.simon@oracle.com>
parents:
15691
diff
changeset
|
129 // Checkstyle: stop |
15691
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
130 long x0, y0, z0; |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
131 long x1, y1, z1, z2, t; |
18163
c88ab4f1f04a
re-enabled Checkstyle with the release of 6.0 that supports Java 8; fixed existing Checkstyle warnings
Doug Simon <doug.simon@oracle.com>
parents:
15691
diff
changeset
|
132 // Checkstyle: resume |
15691
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
133 |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
134 x0 = x & 0xFFFFFFFFL; |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
135 x1 = x >>> 32; |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
136 |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
137 y0 = y & 0xFFFFFFFFL; |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
138 y1 = y >>> 32; |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
139 |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
140 z0 = x0 * y0; |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
141 t = x1 * y0 + (z0 >>> 32); |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
142 z1 = t & 0xFFFFFFFFL; |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
143 z2 = t >>> 32; |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
144 z1 += x0 * y1; |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
145 |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
146 return x1 * y1 + z2 + (z1 >>> 32); |
6a13c422fca4
API for high word multiplication.
Roland Schatz <roland.schatz@oracle.com>
parents:
11279
diff
changeset
|
147 } |
7267
a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
148 } |