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typedef union tree_node *tree;

enum tree_code { EXCESS_PRECISION_EXPR };

enum built_in_function { BUILT_IN_ACOS, BUILT_IN_FPCLASSIFY, BUILT_IN_ISFINITE };

struct tree_base {

    __extension__ enum tree_code code : 16;

    unsigned side_effects_flag : 1;

};

struct tree_exp {

    tree     operands[1];

};

struct tree_function_decl {

    __extension__ enum built_in_function function_code : 11;

    unsigned static_ctor_flag : 1;

};

union tree_node {

    struct tree_base base;

    struct tree_function_decl function_decl;

    struct tree_exp exp;

};

static tree

convert_arguments (tree fundecl)

{

  tree val = (void *)0;

  unsigned int parmnum;

  unsigned char type_generic_remove_excess_precision = 0;

  switch (((fundecl)->function_decl.function_code))

    {

      case BUILT_IN_ISFINITE:

      case BUILT_IN_FPCLASSIFY:

          type_generic_remove_excess_precision = 1;

    }

  for (parmnum = 0;; ++parmnum)

    if (((enum tree_code) (val)->base.code) == EXCESS_PRECISION_EXPR

        && !type_generic_remove_excess_precision)

      val = ((val)->exp.operands[0]);

  return val;

}

tree

build_function_call_vec (tree function)

{

  return convert_arguments (function);

}