1 cananian 1.1.2.1 // INMath.java, created Sat Jan 29 23:01:14 2000 by cananian
2 cananian 1.1.2.1 // Copyright (C) 2000 C. Scott Ananian <cananian@alumni.princeton.edu>
3 cananian 1.1.2.1 // Licensed under the terms of the GNU GPL; see COPYING for details.
4 cananian 1.1.2.1 package harpoon.Interpret.Quads;
5 cananian 1.1.2.1
6 cananian 1.1.2.1 import harpoon.ClassFile.HClass;
7 cananian 1.1.2.1 import harpoon.ClassFile.HField;
8 cananian 1.1.2.1 import harpoon.ClassFile.HMethod;
9 cananian 1.1.2.1
10 cananian 1.1.2.1 /**
11 cananian 1.1.2.1 * <code>INMath</code> provides implementations for (some of) the native
12 cananian 1.1.2.1 * methods in <code>java.lang.Math</code>.
13 cananian 1.1.2.1 *
14 cananian 1.1.2.1 * @author C. Scott Ananian <cananian@alumni.princeton.edu>
15 cananian 1.2 * @version $Id: INMath.java,v 1.2 2002/02/25 21:05:46 cananian Exp $
16 cananian 1.1.2.1 */
17 cananian 1.1.2.1 public class INMath {
18 cananian 1.1.2.1 static final void register(StaticState ss) {
19 cananian 1.1.2.1 ss.register(acos(ss));
20 cananian 1.1.2.1 ss.register(asin(ss));
21 cananian 1.1.2.1 ss.register(atan2(ss));
22 cananian 1.1.2.1 ss.register(atan(ss));
23 cananian 1.1.2.1 ss.register(ceil(ss));
24 cananian 1.1.2.1 ss.register(cos(ss));
25 cananian 1.1.2.1 ss.register(exp(ss));
26 cananian 1.1.2.1 ss.register(floor(ss));
27 cananian 1.1.2.1 ss.register(IEEEremainder(ss));
28 cananian 1.1.2.1 ss.register(log(ss));
29 cananian 1.1.2.1 ss.register(pow(ss));
30 cananian 1.1.2.1 ss.register(rint(ss));
31 cananian 1.1.2.1 ss.register(sin(ss));
32 cananian 1.1.2.1 ss.register(sqrt(ss));
33 cananian 1.1.2.1 ss.register(tan(ss));
34 cananian 1.1.2.1 }
35 cananian 1.1.2.1
36 cananian 1.1.2.1 private static final NativeMethod acos(StaticState ss0) {
37 cananian 1.1.2.1 final HMethod hm = ss0.HCmath.getMethod("acos","(D)D");
38 cananian 1.1.2.1 return new NativeMethod() {
39 cananian 1.1.2.1 HMethod getMethod() { return hm; }
40 cananian 1.1.2.1 Object invoke(StaticState ss, Object[] params) {
41 cananian 1.1.2.1 Double d = (Double) params[0];
42 cananian 1.1.2.1 return new Double(Math.acos(d.doubleValue()));
43 cananian 1.1.2.1 }
44 cananian 1.1.2.1 };
45 cananian 1.1.2.1 }
46 cananian 1.1.2.1 private static final NativeMethod asin(StaticState ss0) {
47 cananian 1.1.2.1 final HMethod hm = ss0.HCmath.getMethod("asin","(D)D");
48 cananian 1.1.2.1 return new NativeMethod() {
49 cananian 1.1.2.1 HMethod getMethod() { return hm; }
50 cananian 1.1.2.1 Object invoke(StaticState ss, Object[] params) {
51 cananian 1.1.2.1 Double d = (Double) params[0];
52 cananian 1.1.2.1 return new Double(Math.asin(d.doubleValue()));
53 cananian 1.1.2.1 }
54 cananian 1.1.2.1 };
55 cananian 1.1.2.1 }
56 cananian 1.1.2.1 private static final NativeMethod atan2(StaticState ss0) {
57 cananian 1.1.2.1 final HMethod hm = ss0.HCmath.getMethod("atan2","(DD)D");
58 cananian 1.1.2.1 return new NativeMethod() {
59 cananian 1.1.2.1 HMethod getMethod() { return hm; }
60 cananian 1.1.2.1 Object invoke(StaticState ss, Object[] params) {
61 cananian 1.1.2.1 double a = ((Double) params[0]).doubleValue();
62 cananian 1.1.2.1 double b = ((Double) params[1]).doubleValue();
63 cananian 1.1.2.1 return new Double(Math.atan2(a,b));
64 cananian 1.1.2.1 }
65 cananian 1.1.2.1 };
66 cananian 1.1.2.1 }
67 cananian 1.1.2.1 private static final NativeMethod atan(StaticState ss0) {
68 cananian 1.1.2.1 final HMethod hm = ss0.HCmath.getMethod("atan","(D)D");
69 cananian 1.1.2.1 return new NativeMethod() {
70 cananian 1.1.2.1 HMethod getMethod() { return hm; }
71 cananian 1.1.2.1 Object invoke(StaticState ss, Object[] params) {
72 cananian 1.1.2.1 Double d = (Double) params[0];
73 cananian 1.1.2.1 return new Double(Math.atan(d.doubleValue()));
74 cananian 1.1.2.1 }
75 cananian 1.1.2.1 };
76 cananian 1.1.2.1 }
77 cananian 1.1.2.1 private static final NativeMethod ceil(StaticState ss0) {
78 cananian 1.1.2.1 final HMethod hm = ss0.HCmath.getMethod("ceil","(D)D");
79 cananian 1.1.2.1 return new NativeMethod() {
80 cananian 1.1.2.1 HMethod getMethod() { return hm; }
81 cananian 1.1.2.1 Object invoke(StaticState ss, Object[] params) {
82 cananian 1.1.2.1 Double d = (Double) params[0];
83 cananian 1.1.2.1 return new Double(Math.ceil(d.doubleValue()));
84 cananian 1.1.2.1 }
85 cananian 1.1.2.1 };
86 cananian 1.1.2.1 }
87 cananian 1.1.2.1 private static final NativeMethod cos(StaticState ss0) {
88 cananian 1.1.2.1 final HMethod hm = ss0.HCmath.getMethod("cos","(D)D");
89 cananian 1.1.2.1 return new NativeMethod() {
90 cananian 1.1.2.1 HMethod getMethod() { return hm; }
91 cananian 1.1.2.1 Object invoke(StaticState ss, Object[] params) {
92 cananian 1.1.2.1 Double d = (Double) params[0];
93 cananian 1.1.2.1 return new Double(Math.cos(d.doubleValue()));
94 cananian 1.1.2.1 }
95 cananian 1.1.2.1 };
96 cananian 1.1.2.1 }
97 cananian 1.1.2.1 private static final NativeMethod exp(StaticState ss0) {
98 cananian 1.1.2.1 final HMethod hm = ss0.HCmath.getMethod("exp","(D)D");
99 cananian 1.1.2.1 return new NativeMethod() {
100 cananian 1.1.2.1 HMethod getMethod() { return hm; }
101 cananian 1.1.2.1 Object invoke(StaticState ss, Object[] params) {
102 cananian 1.1.2.1 Double d = (Double) params[0];
103 cananian 1.1.2.1 return new Double(Math.exp(d.doubleValue()));
104 cananian 1.1.2.1 }
105 cananian 1.1.2.1 };
106 cananian 1.1.2.1 }
107 cananian 1.1.2.1 private static final NativeMethod floor(StaticState ss0) {
108 cananian 1.1.2.1 final HMethod hm = ss0.HCmath.getMethod("floor","(D)D");
109 cananian 1.1.2.1 return new NativeMethod() {
110 cananian 1.1.2.1 HMethod getMethod() { return hm; }
111 cananian 1.1.2.1 Object invoke(StaticState ss, Object[] params) {
112 cananian 1.1.2.1 Double d = (Double) params[0];
113 cananian 1.1.2.1 return new Double(Math.floor(d.doubleValue()));
114 cananian 1.1.2.1 }
115 cananian 1.1.2.1 };
116 cananian 1.1.2.1 }
117 cananian 1.1.2.1 private static final NativeMethod IEEEremainder(StaticState ss0) {
118 cananian 1.1.2.1 final HMethod hm = ss0.HCmath.getMethod("IEEEremainder","(DD)D");
119 cananian 1.1.2.1 return new NativeMethod() {
120 cananian 1.1.2.1 HMethod getMethod() { return hm; }
121 cananian 1.1.2.1 Object invoke(StaticState ss, Object[] params) {
122 cananian 1.1.2.1 double a = ((Double) params[0]).doubleValue();
123 cananian 1.1.2.1 double b = ((Double) params[1]).doubleValue();
124 cananian 1.1.2.1 return new Double(Math.IEEEremainder(a,b));
125 cananian 1.1.2.1 }
126 cananian 1.1.2.1 };
127 cananian 1.1.2.1 }
128 cananian 1.1.2.1 private static final NativeMethod log(StaticState ss0) {
129 cananian 1.1.2.1 final HMethod hm = ss0.HCmath.getMethod("log","(D)D");
130 cananian 1.1.2.1 return new NativeMethod() {
131 cananian 1.1.2.1 HMethod getMethod() { return hm; }
132 cananian 1.1.2.1 Object invoke(StaticState ss, Object[] params) {
133 cananian 1.1.2.1 Double d = (Double) params[0];
134 cananian 1.1.2.1 return new Double(Math.log(d.doubleValue()));
135 cananian 1.1.2.1 }
136 cananian 1.1.2.1 };
137 cananian 1.1.2.1 }
138 cananian 1.1.2.1 private static final NativeMethod pow(StaticState ss0) {
139 cananian 1.1.2.1 final HMethod hm = ss0.HCmath.getMethod("pow","(DD)D");
140 cananian 1.1.2.1 return new NativeMethod() {
141 cananian 1.1.2.1 HMethod getMethod() { return hm; }
142 cananian 1.1.2.1 Object invoke(StaticState ss, Object[] params) {
143 cananian 1.1.2.1 double a = ((Double) params[0]).doubleValue();
144 cananian 1.1.2.1 double b = ((Double) params[1]).doubleValue();
145 cananian 1.1.2.1 return new Double(Math.pow(a,b));
146 cananian 1.1.2.1 }
147 cananian 1.1.2.1 };
148 cananian 1.1.2.1 }
149 cananian 1.1.2.1 private static final NativeMethod rint(StaticState ss0) {
150 cananian 1.1.2.1 final HMethod hm = ss0.HCmath.getMethod("rint","(D)D");
151 cananian 1.1.2.1 return new NativeMethod() {
152 cananian 1.1.2.1 HMethod getMethod() { return hm; }
153 cananian 1.1.2.1 Object invoke(StaticState ss, Object[] params) {
154 cananian 1.1.2.1 Double d = (Double) params[0];
155 cananian 1.1.2.1 return new Double(Math.rint(d.doubleValue()));
156 cananian 1.1.2.1 }
157 cananian 1.1.2.1 };
158 cananian 1.1.2.1 }
159 cananian 1.1.2.1 private static final NativeMethod sin(StaticState ss0) {
160 cananian 1.1.2.1 final HMethod hm = ss0.HCmath.getMethod("sin","(D)D");
161 cananian 1.1.2.1 return new NativeMethod() {
162 cananian 1.1.2.1 HMethod getMethod() { return hm; }
163 cananian 1.1.2.1 Object invoke(StaticState ss, Object[] params) {
164 cananian 1.1.2.1 Double d = (Double) params[0];
165 cananian 1.1.2.1 return new Double(Math.sin(d.doubleValue()));
166 cananian 1.1.2.1 }
167 cananian 1.1.2.1 };
168 cananian 1.1.2.1 }
169 cananian 1.1.2.1 private static final NativeMethod sqrt(StaticState ss0) {
170 cananian 1.1.2.1 final HMethod hm = ss0.HCmath.getMethod("sqrt","(D)D");
171 cananian 1.1.2.1 return new NativeMethod() {
172 cananian 1.1.2.1 HMethod getMethod() { return hm; }
173 cananian 1.1.2.1 Object invoke(StaticState ss, Object[] params) {
174 cananian 1.1.2.1 Double d = (Double) params[0];
175 cananian 1.1.2.1 return new Double(Math.sqrt(d.doubleValue()));
176 cananian 1.1.2.1 }
177 cananian 1.1.2.1 };
178 cananian 1.1.2.1 }
179 cananian 1.1.2.1 private static final NativeMethod tan(StaticState ss0) {
180 cananian 1.1.2.1 final HMethod hm = ss0.HCmath.getMethod("tan","(D)D");
181 cananian 1.1.2.1 return new NativeMethod() {
182 cananian 1.1.2.1 HMethod getMethod() { return hm; }
183 cananian 1.1.2.1 Object invoke(StaticState ss, Object[] params) {
184 cananian 1.1.2.1 Double d = (Double) params[0];
185 cananian 1.1.2.1 return new Double(Math.tan(d.doubleValue()));
186 cananian 1.1.2.1 }
187 cananian 1.1.2.1 };
188 cananian 1.1.2.1 }
189 cananian 1.2 }