Fresh Fish 8/FreshFishVol8-CD1.bin/gnu/src/amiga/libnix-0.7-src.lha/libnix-0.7/sources/math/stdio/isnan.c

Text File | 1994-12-18 | 129 b | 6 lines

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