sin.c

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#include <errno.h>
#include <math.h>
#include <stdbool.h>
 
// https://cppreference.com/w/c/numeric/math/sin.html
double sin(double x)
{
    if (x == 0.0 || x == -0.0)
    {
        return 0.0;
    }
 
    if (isinf(x))
    {
        errno = EDOM;
        return NAN;
    }
 
    if (isnan(x))
    {
        return NAN;
    }
 
    double result;
    asm volatile("fsin" : "=t"(result) : "0"(x));
    return result;
}