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#include "CalculatorP.h"
#include <math.h>
#ifndef M_PI
#define M_PI 3.14159265358979
#endif
#include "etc.h"
Calculator Calculator_Create(int degree_number)
{
Calculator cal;
int i;
cal = (Calculator)malloc(sizeof(_Calculator));
if (!cal) Error("Calculator_Create", "Cannot allocate memory.");
cal->degree_number = degree_number;
cal->sine = (double *)malloc(sizeof(double) * cal->degree_number);
if (!cal->sine) Error("Calculator_Create", "Cannot allocate memory.");
for (i = 0; i < cal->degree_number; i++) {
cal->sine[i] = sin(i * (360.0 / cal->degree_number * M_PI / 180.0));
}
return (cal);
}
Calculator Calculator_Destroy(Calculator cal)
{
if (!cal) return (NULL);
if (cal->sine) free(cal->sine);
free(cal);
return (NULL);
}
double Calculator_GetSin(Calculator cal, int degree)
{
while (degree < 0) degree += cal->degree_number;
degree = degree % cal->degree_number;
return (cal->sine[degree]);
}
double Calculator_GetCos(Calculator cal, int degree)
{
return (Calculator_GetSin(cal, cal->degree_number / 4 - degree));
}
/*****************************************************************************/
/* End of Program */
/*****************************************************************************/
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