C++ (Cpp) fold_const_builtin_load_exponent示例

示例#1

文件： fold-const-call.c 项目： gmarkall/gcc

static bool
fold_const_call_sss (real_value *result, combined_fn fn,
		     const real_value *arg0, const wide_int_ref &arg1,
		     const real_format *format)
{
  switch (fn)
    {
    CASE_CFN_LDEXP:
      return fold_const_builtin_load_exponent (result, arg0, arg1, format);

    CASE_CFN_SCALBN:
    CASE_CFN_SCALBLN:
      return (format->b == 2
	      && fold_const_builtin_load_exponent (result, arg0, arg1,
						   format));

    CASE_CFN_POWI:
      /* Avoid the folding if flag_signaling_nans is on and
         operand is a signaling NaN.  */
      if (!flag_unsafe_math_optimizations
	  && flag_signaling_nans
	  && REAL_VALUE_ISSIGNALING_NAN (*arg0))
        return false;

      real_powi (result, format, arg0, arg1.to_shwi ());
      return true;

    default:
      return false;
    }
}

示例#2

文件： fold-const-call.c 项目： shabesoglu/gcc

static bool
fold_const_call_sss (real_value *result, built_in_function fn,
		     const real_value *arg0, const wide_int_ref &arg1,
		     const real_format *format)
{
  switch (fn)
    {
    CASE_FLT_FN (BUILT_IN_LDEXP):
      return fold_const_builtin_load_exponent (result, arg0, arg1, format);

    CASE_FLT_FN (BUILT_IN_SCALBN):
    CASE_FLT_FN (BUILT_IN_SCALBLN):
      return (format->b == 2
	      && fold_const_builtin_load_exponent (result, arg0, arg1,
						   format));

    CASE_FLT_FN (BUILT_IN_POWI):
      real_powi (result, format, arg0, arg1.to_shwi ());
      return true;

    default:
      return false;
    }
}