linux下编程用 编译软件

				/* Copyright (C) 2003 Free Software Foundation.								   Check that constant folding (c1 - x) op c2 into x swap(op) c1-c2				   doesn't break anything.								   Written by Roger Sayle, 27th March 2003.  */								/* { dg-do run } */				/* { dg-options "-O2 -ffast-math" } */								extern void abort (void);								int foo(double x)				{				  return (10.0 - x) > 3.0;				}								int bar (double x)				{				  return (10.0 - x) == 5.0;				}								int main()				{				  if (foo (8.0))				    abort ();								  if (! foo (6.0))				    abort ();								  if (bar (1.0))				    abort ();								  if (! bar (5.0))				    abort ();				  return 0;				}