aboutsummaryrefslogtreecommitdiff
path: root/ic-reals-6.3/tests/t2.c
blob: a41eed00d11e71f125e1c86a214c82bde3ce33e0 (plain)
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
#include <stdio.h>
#include "real.h"
#include <math.h>

/*
 * computes log(exp(x))
 */
main(int argc, char *argv[])
{
	Real x, y, z;
	double f;
	Real makeRealSignCNQInt(Sign, char *, int, int, int);

	MyName = argv[0];

	if (argc != 7) {
		fprintf(stderr, "%s <sign> <c> <n> <a> <b> <ndigits>\n", MyName);
		exit(1);
	}

	initReals();

	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");

	f = realToDouble(y);
	printf("x=%f\n",f);

	x = exp_R(y);
	x = log_R(x);

	print_R_Dec(x, atoi(argv[6]));
	printf("\n");
	printf("t2(x)=%f\n", log(exp(f)));
}