shithub: npe

ref: cdc06f177f6e2b9f4a4e354ac10dabfae0fd459a
dir: /libnpe/isnormal.c/

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

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