forked from yuemingl/SymJava
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathSymReal.java
More file actions
109 lines (87 loc) · 1.9 KB
/
SymReal.java
File metadata and controls
109 lines (87 loc) · 1.9 KB
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
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
package symjava.symbolic;
import symjava.symbolic.utils.Utils;
public class SymReal<T extends Number> extends Expr {
protected T value;
public SymReal(T val) {
this.value = val;
label = String.valueOf(val);
sortKey = label;
isSimplified = true;
}
public T getValue() {
return value;
}
public double getDoubleValue() {
return value.doubleValue();
}
public int getIntValue() {
return value.intValue();
}
public long getLongValue() {
return value.longValue();
}
public float getFloatValue() {
return value.floatValue();
}
public boolean isInteger() {
double dval = value.doubleValue();
double remain = dval - Math.floor(dval);
if(remain == 0.0) {
return true;
}
return false;
}
public boolean isPositive () {
return value.doubleValue() > 0.0;
}
public boolean isNonPositive () {
return value.doubleValue() <= 0.0;
}
public boolean isNegative () {
return value.doubleValue() < 0.0;
}
public boolean isNonNegative () {
return value.doubleValue() >= 0.0;
}
public boolean isZero () {
return value.doubleValue() == 0.0;
}
public boolean isOne () {
return value.doubleValue() == 1.0;
}
public boolean isNegativeOne () {
return value.doubleValue() == -1.0;
}
public static <T extends Number> SymReal<T> valueOf(T val) {
return new SymReal<T>(val);
}
@Override
public Expr diff(Expr expr) {
return Symbol.C0;
}
@Override
public Expr subs(Expr from, Expr to) {
if(Utils.symCompare(this, from))
return to;
return this;
}
@Override
public Expr simplify() {
return this;
}
@Override
public boolean symEquals(Expr other) {
if(this == other)
return true;
else if(other instanceof SymReal<?>) {
SymReal<?> o = (SymReal<?>)other;
Number t1 = (Number)value;
Number t2 = (Number)o.getValue();
//if(t1.equals(t2))
// return true;
if(t1.doubleValue() == t2.doubleValue())
return true;
}
return false;
}
}