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#include <stdio.h>
#include "real.h"
#include <math.h>
/*
* This is the same as the tan_R test but shows how to retrieve digits
* from a real incrementally.
*/
main(int argc, char *argv[])
{
Real x, y;
double f;
Real makeRealSignCNQInt(Sign, char *, int, int, int);
mpz_t digits;
Sign sign;
Digit digit;
int count;
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 = tan_R(y);
print_R_Dec(x, atoi(argv[6]));
printf("\n");
printf("tan(x)=%f\n", tan(f));
mpz_init(digits);
retrieveInfo(x, &sign, &count, digits);
printf("%s ", signToString(sign));
while (count > 0) {
digit = takeDigit(&count, digits);
printf("%s ", digitToString(digit));
}
printf("\n");
}
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