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#include "CORDICtable.c"
#include <iostream>
// angle is radians multiplied by CORDIC multiplication factor M
// modulus can be set to CORDIC inverse gain 1/F to avoid post-division
void CORDICsincos(int a, int m, int *s, int *c)
{
int k, tx, x = m, y = 0, z = a, fl = 0;
if (z > +CORDIC_HALFPI)
{
fl = +1;
z = (+CORDIC_PI) - z;
}
else if (z < -CORDIC_HALFPI)
{
fl = +1;
z = (-CORDIC_PI) - z;
}
for (k = 0; k < CORDIC_MAXITER; k++)
{
std::cout << x << " " << y << " " << z << "\n";
tx = x;
if (z >= 0)
{
x -= (y >> k);
y += (tx >> k);
z -= CORDIC_ZTBL[k];
}
else
{
x += (y >> k);
y -= (tx >> k);
z += CORDIC_ZTBL[k];
}
}
if (fl)
x = -x;
*c = x; // m*cos(a) multiplied by gain F and factor M
*s = y; // m*sin(a) multiplied by gain F and factor M
}
int main()
{
double x;
std::cin >> x;
int sinus, cosinus;
CORDICsincos(x * CORDIC_MUL, CORDIC_1F, &sinus, &cosinus);
std::cout << sinus << " " << cosinus << "\n";
std::cout << (double)sinus / (double)CORDIC_MUL << " " << (double)cosinus / (double)CORDIC_MUL << "\n";
}
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