static double filter_sinc(const double x)
{
	/* X-scaled Sinc(x) function. */
	if (x == 0.0) return(1.0);
	return (sin(M_PI * (double) x) / (M_PI * (double) x));
}

This vulnerability category highlights issues in resource management where failures to properly release memory, file handles, or other resources can degrade system performance or enable denial-of-service conditions.