gcc/testsuite/gcc.dg/dfp/pragma-float-const-decimal64-2.c

/* { dg-do compile } */
/* { dg-options "-Wall" } */

/* N1312 7.1.1: The FLOAT_CONST_DECIMAL64 pragma.
   C99 6.4.4.2a (New).

   Verify that the pragma has the expected result by using unsuffixed
   float constants as operands in expressions that would mix binary and
   decimal operands if the pragma had no effect, or the wrong effect.
   Use _Pragma rather than #pragma.  */

_Pragma ("STDC FLOAT_CONST_DECIMAL64 ON")
double a = 1.0 * 2.0dd;

double
f1 (void)
{
_Pragma ("STDC FLOAT_CONST_DECIMAL64 OFF")
  double b = 2.0 * 3.0d;

  {
    double c = 3.0 * 4.0d;
    b = b + c;
  }

  {
_Pragma ("STDC FLOAT_CONST_DECIMAL64 ON")
    double d = 4.0 * 5.0dd;

    b = b + d;
  }

  {
     /* Default is OFF.  */
_Pragma ("STDC FLOAT_CONST_DECIMAL64 DEFAULT")
     double e = 5.0 * 6.0d;
     b = b + e;
  }

  return b;
}

double
f2 (void)
{
  /* Use value from outer scope, which is ON.  */
  double b = 2.0 * 3.0dd;

  {
_Pragma ("STDC FLOAT_CONST_DECIMAL64 OFF")
    double c = 3.0 * 4.0d;

    {
_Pragma ("STDC FLOAT_CONST_DECIMAL64 ON")
      double d = 4.0 * 5.0dd;

      {
_Pragma ("STDC FLOAT_CONST_DECIMAL64 DEFAULT")
	double e = 5.0 * 6.0d;

	{
_Pragma ("STDC FLOAT_CONST_DECIMAL64 ON")
	  double f = 6.0 * 7.0dd;

	  b = a + b + c + d + e + f;
	}
      }
    }
  }
  return b;
}

/* Use previous value from this scope, which is ON.  */
double f = 6.0 * 7.0dd;

double
f3 (void)
{
_Pragma ("STDC FLOAT_CONST_DECIMAL64 OFF")
  double b = 2.0 * 3.0d;

  return b + f;
}

/* Return to the state from this scope, which is ON.  */
double g = 7.0 + 8.0dd;