1  /* Copyright (C) 2003  Free Software Foundation.
       2  
       3     Verify that built-in math function constant folding doesn't
       4     cause any problems for the compiler.
       5  
       6     Written by Roger Sayle, 7th June 2003.  */
       7  
       8  /* { dg-do compile } */
       9  /* { dg-options "-O2 -ffast-math" } */
      10  
      11  extern double fabs (double);
      12  extern float fabsf (float);
      13  extern long double fabsl (long double);
      14  extern double sqrt (double);
      15  extern float sqrtf (float);
      16  extern long double sqrtl (long double);
      17  extern double exp (double);
      18  extern float expf (float);
      19  extern long double expl (long double);
      20  
      21  double test1(double x)
      22  {
      23    return fabs(x*x);
      24  }
      25  
      26  double test2(double x)
      27  {
      28    return fabs(sqrt(x)+2.0);
      29  }
      30  
      31  double test3(double x)
      32  {
      33    return fabs(3.0*exp(x));
      34  }
      35  
      36  float test1f(float x)
      37  {
      38    return fabsf(x*x);
      39  }
      40  
      41  float test2f(float x)
      42  {
      43    return fabsf(sqrtf(x)+2.0f);
      44  }
      45  
      46  float test3f(float x)
      47  {
      48    return fabsf(3.0f*expf(x));
      49  }
      50  
      51  long double test1l(long double x)
      52  {
      53    return fabsl(x*x);
      54  }
      55  
      56  long double test2l(long double x)
      57  {
      58    return fabsl(sqrtl(x)+2.0l);
      59  }
      60  
      61  long double test3l(long double x)
      62  {
      63    return fabsl(3.0l*expl(x));
      64  }
      65