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
|
// $Id: PredictionValue.hh,v 1.2 2002/10/04 13:44:00 flaterco Exp $
/* PredictionValue feet, meters, knots, et cetera.
Copyright (C) 1998 David Flater.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
class PredictionValue {
friend PredictionValue operator+ (PredictionValue a, PredictionValue b);
friend PredictionValue operator- (PredictionValue a, PredictionValue b);
public:
class Unit {
friend PredictionValue operator+ (PredictionValue a, PredictionValue b);
public:
enum Units {Feet=0, Meters=1, Knots=2, KnotsSquared=3};
Units mytype;
Unit ();
Unit (const Dstr &name_in);
Unit (Units units_in);
void shortname (Dstr &name_out);
void longname (Dstr &name_out);
};
PredictionValue ();
PredictionValue (Unit inunits, double inval);
double val() const;
virtual void val(double newval);
// G++ had an undiagnosed problem with naming this setUnits.
// Any conversion is possible if value is 0.0; otherwise,
// conversions are enforced.
void Units (Unit tounits);
void Units (PredictionValue::Unit::Units tounits);
Unit Units () const;
// This insists that both values must have exactly the same units.
// When it is time to add the datum for a hydraulic station, you must
// first explicitly convert the amplitude from KnotsSquared to Knots.
// This should prevent any unexpected conversions.
// Exception: If value is 0 (uninitialized), adopt units of non-zero value.
PredictionValue &operator+= (PredictionValue in_val);
PredictionValue &operator-= (PredictionValue in_val);
// Print in the form -XX.YY units (padding as needed)
void print (Dstr &print_out);
// Same thing without padding, with abbreviated units.
void printnp (Dstr &print_out);
virtual PredictionValue &operator*= (double levelMultiply);
protected:
double myvalue;
Unit myunits;
};
PredictionValue operator* (double a, PredictionValue b);
PredictionValue operator* (PredictionValue b, double a);
int operator> (PredictionValue a, PredictionValue b);
int operator< (PredictionValue a, PredictionValue b);
int operator>= (PredictionValue a, PredictionValue b);
int operator<= (PredictionValue a, PredictionValue b);
int operator== (PredictionValue a, PredictionValue b);
int operator!= (PredictionValue a, PredictionValue b);
int operator!= (PredictionValue::Unit a, PredictionValue::Unit b);
// int operator== (PredictionValue::Unit a, PredictionValue::Unit::Units b);
double operator/ (PredictionValue a, PredictionValue b);
PredictionValue operator/ (PredictionValue b, double a);
PredictionValue operator/ (PredictionValue b, long a);
// This insists that both values must have exactly the same units.
// When it is time to add the datum for a hydraulic station, you must
// first explicitly convert the amplitude from KnotsSquared to Knots.
// This should prevent any unexpected conversions.
PredictionValue operator+ (PredictionValue a, PredictionValue b);
PredictionValue operator- (PredictionValue a, PredictionValue b);
PredictionValue operator- (PredictionValue a);
PredictionValue abs (PredictionValue a);
int operator== (PredictionValue::Unit a, PredictionValue::Unit b);
|
