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
|
#include <stdio.h>
#include "real.h"
#include "real-impl.h"
#include <math.h>
/*
* Reinhold's iter example from the user manual.
*/
Real eps, eps2;
Real delay(Real (*)(Real), Real);
main(int argc, char *argv[])
{
Real x, y, z;
double f;
Real makeRealSignCNQInt(Sign, char *, int, int, int);
Real iter(Real);
MyName = argv[0];
if (argc != 7) {
fprintf(stderr, "%s <sign> <c> <n> <a> <b> <ndigits>\n", MyName);
exit(1);
}
initReals();
debugTrace(1);
y = makeRealSignCNQInt(
atoi(argv[1]), /* sign */
argv[2], /* c */
atoi(argv[3]), /* n */
atoi(argv[4]), /* a */
atoi(argv[5])); /* b */
print_R_Dec(y, atoi(argv[6]));
printf("\n");
eps = vector_Int(1, 100000000);
eps2 = vector_Int(1, 200000000);
x = iter(y);
print_R_Dec(x, atoi(argv[6]));
printf("\n");
}
Real
iter(Real x)
{
Real y, d;
static int doneInit = 0;
void delayCls();
y = div_R_Int(x, 2);
d = abs_R(sub_R_R(x, y));
return realIf(2,
lt_R_R(d, eps), y,
gt_R_R(d, eps2), realDelay((Delay_Fun) iter, (Delay_Arg) y));
}
|
