[hasherfrog]

bgg0408

Код:

float getNaNQ () 
{ 
  unsigned long num = 0xffffffffUL; 
  return *(float*)# 
} 
 
int isNaNQorInf (float num_) 
{ 
  float num = num_; 
  return ((*(long *)&num & 0x7f800000L) == 0x7f800000L); 
} 
 
int isInf (float num_) 
{ 
  float num = num_; 
  return (((*(long *)&num & 0x7f800000L) == 0x7f800000L) && \ 
          ((*(long *)&num & 0x007fffffL) == 0x00000000L)); 
} 
 
isNaNQ (float num_) 
{ 
  float num = num_; 
  return (((*(long *)&num & 0x7f800000L) == 0x7f800000L) && \ 
          ((*(long *)&num & 0x007fffffL) != 0x00000000L)); 
}