Scene Storm/Scene Storm - Volume 1.iso/coding/c/vbcc/machines/amiga68k/libsrc/math/isnan.c

Text File | 1995-09-11 | 129 b | 6 lines

int isnan(double a)
{
  unsigned long *b=(unsigned long *)&a;
  return (b[0]&0x7ff00000)==0x7ff00000&&((b[0]&0xfffff)||b[1]);
}