00001 /* public domain rewrite of isnan(3) */ 00002 00003 static int double_ne(double n1, double n2); 00004 00005 int 00006 isnan(double n) 00007 { 00008 return double_ne(n, n); 00009 } 00010 00011 static int 00012 double_ne(double n1, double n2) 00013 { 00014 return n1 != n2; 00015 } 00016