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1
10 package org.jgap.gp.function;
11
12 import org.jgap.*;
13 import org.jgap.gp.*;
14 import org.jgap.gp.impl.*;
15
16
23 public class Modulo
24 extends MathCommand {
25
26 private static final String  CVS_REVISION = "$Revision: 1.7 $";
27
28 public Modulo(final GPConfiguration a_conf, Class a_type)
29 throws InvalidConfigurationException {
30 super(a_conf, 2, a_type);
31 }
32
33 public String toString() {
34 return "&1 % &2";
35 }
36
37
43 public String getName() {
44 return "Modulo";
45 }
46
47 public int execute_int(ProgramChromosome c, int n, Object [] args) {
48 int v1 = c.execute_int(n, 0, args);
49 int v2 = c.execute_int(n, 1, args);
50 if (v2 == 0) {
51 return 0;
52 }
53 return v1 % v2;
54 }
55
56 public long execute_long(ProgramChromosome c, int n, Object [] args) {
57 long v1 = c.execute_long(n, 0, args);
58 long v2 = c.execute_long(n, 1, args);
59 if (v2 == 0) {
60 return 0;
61 }
62 return v1 % v2;
63 }
64
65 public float execute_float(ProgramChromosome c, int n, Object [] args) {
66 float v1 = c.execute_float(n, 0, args);
67 float v2 = c.execute_float(n, 1, args);
68 if (Math.abs(v2) < DELTA) {
69 return 0;
70 }
71 return v1 % v2;
72 }
73
74 public double execute_double(ProgramChromosome c, int n, Object [] args) {
75 double v1 = c.execute_double(n, 0, args);
76 double v2 = c.execute_double(n, 1, args);
77 if (Math.abs(v2) < DELTA) {
78 return 0;
79 }
80 return v1 % v2;
81 }
82
83 public Object execute_object(ProgramChromosome c, int n, Object [] args) {
84 try {
85 return ( (Compatible) c.execute_object(n, 0, args)).execute_mod(c.
86 execute_object(n, 1, args));
87 } catch (ArithmeticException aex) {
88 throw new IllegalStateException ("mod with illegal arguments");
89 }
90 }
91
92 protected interface Compatible {
93 public Object execute_mod(Object o);
94 }
95 }
96 |
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