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Text File  |  1997-12-30  |  128 b   |  6 lines
  1. int isinf(double a)
  2. {
  3.   unsigned long *b=(unsigned long *)&a;
  4.   return (b[0]&0x7ff00000)==0x7ff00000&&!(b[0]&0xfffff)&&!b[1];
  5. }
  6.