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#include <stdio.h>
#include "real.h"
#include <math.h>
/*
* Tests the tan_R when applied to a real expressed
* by a sign, a characteristic pair and a vector.
*/
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 */
/*
y = vector_Int(atoi(argv[4]), atoi(argv[5]));
*/
print_R_Dec(y, atoi(argv[6]));
printf("\n");
f = realToDouble(y);
printf("x=%f\n",f);
x = tan_R(y);
printf("tan(x)=");
print_R_Dec(x, atoi(argv[6]));
printf("\n");
z = atan_R(x);
printf("atan(tan(x))=");
print_R_Dec(z, atoi(argv[6]));
printf("\n");
z = div_R_R(y, z);
printf("x / atan(tan(x))=");
print_R_Dec(z, atoi(argv[6]));
printf("\n");
z = div_R_R(z, Pi);
printf("(x / atan(tan(x))) / Pi=");
print_R_Dec(z, atoi(argv[6]));
printf("\n");
printf("tan(x)=%f\n", tan(f));
printf("atan(tan(x))=%f\nx / atan(tan(x))=%f\n(x / atan(tan(x)))/pi=%f\n",
atan(tan(f)),
f / atan(tan(f)),
(f / atan(tan(f))) / M_PI);
}
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