CU Amiga Super CD-ROM 22/CU Amiga Magazine's Super CD-ROM 22 (1998)(EMAP Images)(GB)[!][issue 1998-05].iso/PowerPC/Programming/vbcc/machines/amigappc/libsrc/math/isnan.c

Text File | 1997-12-30 | 129 b | 6 lines

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