/* public domain rewrite of isnan(3) */
#ifdef _MSC_VER
#include <float.h>
int
isnan(n)
double n;
{
return _isnan(n);
}
#else
static int double_ne();
return double_ne(n, n);
static
double_ne(n1, n2)
double n1, n2;
return n1 != n2;
#endif