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1
9 package org.nfunk.jep.function;
10
11 import java.util.*;
12 import org.nfunk.jep.*;
13 import org.nfunk.jep.type.*;
14
15 public class Divide extends PostfixMathCommand
16 {
17 public Divide()
18 {
19 numberOfParameters = 2;
20 }
21
22 public void run(Stack inStack)
23 throws ParseException
24 {
25 checkStack(inStack); Object  param2 = inStack.pop();
27 Object param1 = inStack.pop();
28 inStack.push(div(param1, param2)); return;
30 }
31
32 public Object div(Object param1, Object param2)
33 throws ParseException
34 {
35 if (param1 instanceof Complex)
36 {
37 if (param2 instanceof Complex)
38 return div((Complex)param1, (Complex)param2);
39 else if (param2 instanceof Number )
40 return div((Complex)param1, (Number )param2);
41 else if (param2 instanceof Vector)
42 return div((Complex)param1, (Vector)param2);
43 }
44 else if (param1 instanceof Number )
45 {
46 if (param2 instanceof Complex)
47 return div((Number )param1, (Complex)param2);
48 else if (param2 instanceof Number )
49 return div((Number )param1, (Number )param2);
50 else if (param2 instanceof Vector)
51 return div((Number )param1, (Vector)param2);
52 }
53 else if (param1 instanceof Vector)
54 {
55 if (param2 instanceof Complex)
56 return div((Vector)param1, (Complex)param2);
57 else if (param2 instanceof Number )
58 return div((Vector)param1, (Number )param2);
59 }
60
61 throw new ParseException("Invalid parameter type");
62 }
63
64
65 public Double div(Number d1, Number d2)
66 {
67 return new Double (d1.doubleValue() / d2.doubleValue());
68 }
69
70 public Complex div(Complex c1, Complex c2)
71 {
72 return c1.div(c2);
73 }
74
75 public Complex div(Number d, Complex c)
76 {
77 Complex c1 = new Complex(d.doubleValue(), 0);
78
79 return c1.div(c);
80 }
81
82 public Complex div(Complex c, Number d)
83 {
84 return new Complex(c.re()/d.doubleValue(), c.im()/d.doubleValue());
85 }
86
87 public Vector div(Vector v, Number d)
88 {
89 Vector result = new Vector();
90
91 for (int i=0; i<v.size(); i++)
92 result.addElement(div((Number )v.elementAt(i), d));
93
94 return result;
95 }
96
97 public Vector div(Number d, Vector v)
98 {
99 Vector result = new Vector();
100
101 for (int i=0; i<v.size(); i++)
102 result.addElement(div(d, (Number )v.elementAt(i)));
103
104 return result;
105 }
106
107 public Vector div(Vector v, Complex c)
108 {
109 Vector result = new Vector();
110
111 for (int i=0; i<v.size(); i++)
112 result.addElement(div((Number )v.elementAt(i), c));
113
114 return result;
115 }
116
117 public Vector div(Complex c, Vector v)
118 {
119 Vector result = new Vector();
120
121 for (int i=0; i<v.size(); i++)
122 result.addElement(div(c, (Number )v.elementAt(i)));
123
124 return result;
125 }
126 }
127 |
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