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comparison tests/agcl/ffcalc/number.h @ 0:13d2b8934445

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Import AnaGram (near-)release tree into Mercurial.
author David A. Holland
date Sat, 22 Dec 2007 17:52:45 -0500
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-1:000000000000 0:13d2b8934445
1 #ifndef NUMBER_H
2 #define NUMBER_H
3
4 #include <stdio.h>
5 #include <assert.h>
6
7 class Number {
8 double value;
9 int valid;
10 int *useCount;
11 int serialNumber;
12 static int nCreated;
13 static char buf[];
14 void logCreation() {*useCount = 1; printf("Create: %d\n", serialNumber); fflush(stdout);
15 }
16 public:
17 Number() : valid(0), useCount(new int), serialNumber(nCreated++) {logCreation();}
18 Number(double d) : value(d), valid(1), useCount(new int), serialNumber(nCreated++) {logCreation();}
19 Number(const Number &n)
20 : value(n.value),
21 valid(n.valid),
22 useCount(n.useCount),
23 serialNumber(n.serialNumber)
24 {
25 (*useCount)++;
26 printf("Copy constructor: %s\n", n.asString());
27 printf("Copy constructor: %s\n", asString());
28 fflush(stdout);
29 }
30 ~Number() {
31 assert(*useCount > 0);
32 if (--(*useCount) == 0) printf("Delete %d\n", serialNumber);
33 else printf("Destructor: %s\n", asString());
34 fflush(stdout);
35 }
36 char *asString() const {
37 char *vs = valid ? "valid" : "invalid";
38 sprintf(buf, "%X: sn%d(%s) = %G, *%X = %d", this, serialNumber, vs, value, useCount, *useCount);
39 return buf;
40 }
41 Number &operator = (const Number &n) {
42 assert(*useCount > 0);
43 if (--(*useCount) == 0) printf("Delete %d\n", serialNumber);
44 fflush(stdout);
45 useCount = n.useCount;
46 value = n.value;
47 valid = n.valid;
48 serialNumber = n.serialNumber;
49 (*useCount)++;
50 return *this;
51 }
52 Number &operator += (const Number &n) {valid |= n.valid; value += n.value; return *this;}
53 Number &operator -= (const Number &n) {valid |= n.valid; value -= n.value; return *this;}
54 Number &operator *= (const Number &n) {valid |= n.valid; value *= n.value; return *this;}
55 Number &operator /= (const Number &n) {valid |= n.valid; if(valid) value /= n.value; return *this;}
56 Number &operator -() {value = -value; return *this;}
57 operator char * () {
58 if (valid) {
59 sprintf(buf, "%G", value);
60 printf("operator char * = %g\n", value);
61 return buf;
62 }
63 else return "Invalid";
64 }
65 };
66
67 #endif