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#include "astro.h"
void
icosadd(double *fp, char *cp)
{
cafp = fp;
cacp = cp;
}
double
cosadd(int n, ...)
{
double *coefp, coef[10];
char *cp;
int i;
double sum, a1, a2;
va_list arg;
sum = 0;
cp = cacp;
va_start(arg, n);
for(i=0; i<n; i++)
coef[i] = va_arg(arg, double);
va_end(arg);
loop:
a1 = *cafp++;
if(a1 == 0) {
cacp = cp;
return sum;
}
a2 = *cafp++;
i = n;
coefp = coef;
do
a2 += *cp++ * *coefp++;
while(--i);
sum += a1 * cos(a2);
goto loop;
}
double
sinadd(int n, ...)
{
double *coefp, coef[10];
char *cp;
int i;
double sum, a1, a2;
va_list arg;
sum = 0;
cp = cacp;
va_start(arg, n);
for(i=0; i<n; i++)
coef[i] = va_arg(arg, double);
va_end(arg);
loop:
a1 = *cafp++;
if(a1 == 0) {
cacp = cp;
return sum;
}
a2 = *cafp++;
i = n;
coefp = coef;
do
a2 += *cp++ * *coefp++;
while(--i);
sum += a1 * sin(a2);
goto loop;
}
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