shithub: npe

ref: 56b539819f0062e370b9834f0e44afaf46a4018a
dir: /libnpe/isnormal.c/

#include <math.h>
#include "_npe.h"

int
isnormal(double d)
{
	return d == 0 || isNaN(d) || isInf(d, 0);
}