/* Intrinsic function resolution.
   Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation,
   Inc.
   Contributed by Andy Vaught & Katherine Holcomb

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2, or (at your option) any later
version.

GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING.  If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA.  */


/* Assign name and types to intrinsic procedures.  For functions, the
   first argument to a resolution function is an expression pointer to
   the original function node and the rest are pointers to the
   arguments of the function call.  For subroutines, a pointer to the
   code node is passed.  The result type and library subroutine name
   are generally set according to the function arguments.  */

#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tree.h"
#include "gfortran.h"
#include "intrinsic.h"


/* Given printf-like arguments, return a stable version of the result string. 

   We already have a working, optimized string hashing table in the form of
   the identifier table.  Reusing this table is likely not to be wasted, 
   since if the function name makes it to the gimple output of the frontend,
   we'll have to create the identifier anyway.  */

const char *
gfc_get_string (const char *format, ...)
{
  char temp_name[128];
  va_list ap;
  tree ident;

  va_start (ap, format);
  vsnprintf (temp_name, sizeof(temp_name), format, ap);
  va_end (ap);
  temp_name[sizeof(temp_name)-1] = 0;

  ident = get_identifier (temp_name);
  return IDENTIFIER_POINTER (ident);
}

/********************** Resolution functions **********************/


void
gfc_resolve_abs (gfc_expr * f, gfc_expr * a)
{
  f->ts = a->ts;
  if (f->ts.type == BT_COMPLEX)
    f->ts.type = BT_REAL;

  f->value.function.name =
    gfc_get_string ("__abs_%c%d", gfc_type_letter (a->ts.type), a->ts.kind);
}


void
gfc_resolve_acos (gfc_expr * f, gfc_expr * x)
{
  f->ts = x->ts;
  f->value.function.name =
    gfc_get_string ("__acos_%c%d", gfc_type_letter (x->ts.type), x->ts.kind);
}


void
gfc_resolve_aimag (gfc_expr * f, gfc_expr * x)
{
  f->ts.type = BT_REAL;
  f->ts.kind = x->ts.kind;
  f->value.function.name =
    gfc_get_string ("__aimag_%c%d", gfc_type_letter (x->ts.type), x->ts.kind);
}


void
gfc_resolve_aint (gfc_expr * f, gfc_expr * a, gfc_expr * kind)
{
  f->ts.type = a->ts.type;
  f->ts.kind = (kind == NULL) ? a->ts.kind : mpz_get_si (kind->value.integer);

  /* The resolved name is only used for specific intrinsics where
     the return kind is the same as the arg kind.  */
  f->value.function.name =
    gfc_get_string ("__aint_%c%d", gfc_type_letter (a->ts.type), a->ts.kind);
}


void
gfc_resolve_dint (gfc_expr * f, gfc_expr * a)
{
  gfc_resolve_aint (f, a, NULL);
}


void
gfc_resolve_all (gfc_expr * f, gfc_expr * mask, gfc_expr * dim)
{
  f->ts = mask->ts;

  if (dim != NULL)
    {
      gfc_resolve_index (dim, 1);
      f->rank = mask->rank - 1;
      f->shape = gfc_copy_shape_excluding (mask->shape, mask->rank, dim);
    }

  f->value.function.name =
    gfc_get_string (PREFIX("all_%c%d"), gfc_type_letter (mask->ts.type),
		    mask->ts.kind);
}


void
gfc_resolve_anint (gfc_expr * f, gfc_expr * a, gfc_expr * kind)
{
  f->ts.type = a->ts.type;
  f->ts.kind = (kind == NULL) ? a->ts.kind : mpz_get_si (kind->value.integer);

  /* The resolved name is only used for specific intrinsics where
     the return kind is the same as the arg kind.  */
  f->value.function.name =
    gfc_get_string ("__anint_%c%d", gfc_type_letter (a->ts.type), a->ts.kind);
}


void
gfc_resolve_dnint (gfc_expr * f, gfc_expr * a)
{
  gfc_resolve_anint (f, a, NULL);
}


void
gfc_resolve_any (gfc_expr * f, gfc_expr * mask, gfc_expr * dim)
{
  f->ts = mask->ts;

  if (dim != NULL)
    {
      gfc_resolve_index (dim, 1);
      f->rank = mask->rank - 1;
      f->shape = gfc_copy_shape_excluding (mask->shape, mask->rank, dim);
    }

  f->value.function.name =
    gfc_get_string (PREFIX("any_%c%d"), gfc_type_letter (mask->ts.type),
		    mask->ts.kind);
}


void
gfc_resolve_asin (gfc_expr * f, gfc_expr * x)
{
  f->ts = x->ts;
  f->value.function.name =
    gfc_get_string ("__asin_%c%d", gfc_type_letter (x->ts.type), x->ts.kind);
}


void
gfc_resolve_atan (gfc_expr * f, gfc_expr * x)
{
  f->ts = x->ts;
  f->value.function.name =
    gfc_get_string ("__atan_%c%d", gfc_type_letter (x->ts.type), x->ts.kind);
}


void
gfc_resolve_atan2 (gfc_expr * f, gfc_expr * x,
		   gfc_expr * y ATTRIBUTE_UNUSED)
{
  f->ts = x->ts;
  f->value.function.name =
    gfc_get_string ("__atan2_%c%d", gfc_type_letter (x->ts.type), x->ts.kind);
}


/* Resolve the BESYN and BESJN intrinsics.  */

void
gfc_resolve_besn (gfc_expr * f, gfc_expr * n, gfc_expr * x)
{
  gfc_typespec ts;
  
  f->ts = x->ts;
  if (n->ts.kind != gfc_c_int_kind)
    {
      ts.type = BT_INTEGER;
      ts.kind = gfc_c_int_kind;
      gfc_convert_type (n, &ts, 2);
    }
  f->value.function.name = gfc_get_string ("<intrinsic>");
}


void
gfc_resolve_btest (gfc_expr * f, gfc_expr * i, gfc_expr * pos)
{
  f->ts.type = BT_LOGICAL;
  f->ts.kind = gfc_default_logical_kind;

  f->value.function.name = gfc_get_string ("__btest_%d_%d", i->ts.kind,
					   pos->ts.kind);
}


void
gfc_resolve_ceiling (gfc_expr * f, gfc_expr * a, gfc_expr * kind)
{
  f->ts.type = BT_INTEGER;
  f->ts.kind = (kind == NULL) ? gfc_default_integer_kind
    : mpz_get_si (kind->value.integer);

  f->value.function.name =
    gfc_get_string ("__ceiling_%d_%c%d", f->ts.kind,
		    gfc_type_letter (a->ts.type), a->ts.kind);
}


void
gfc_resolve_char (gfc_expr * f, gfc_expr * a, gfc_expr * kind)
{
  f->ts.type = BT_CHARACTER;
  f->ts.kind = (kind == NULL) ? gfc_default_character_kind
    : mpz_get_si (kind->value.integer);

  f->value.function.name =
    gfc_get_string ("__char_%d_%c%d", f->ts.kind,
		    gfc_type_letter (a->ts.type), a->ts.kind);
}


void
gfc_resolve_chdir (gfc_expr * f, gfc_expr * d ATTRIBUTE_UNUSED)
{
  f->ts.type = BT_INTEGER;
  f->ts.kind = gfc_default_integer_kind;
  f->value.function.name = gfc_get_string (PREFIX("chdir_i%d"), f->ts.kind);
}


void
gfc_resolve_chdir_sub (gfc_code * c)
{
  const char *name;
  int kind;

  if (c->ext.actual->next->expr != NULL)
    kind = c->ext.actual->next->expr->ts.kind;
  else
    kind = gfc_default_integer_kind;

  name = gfc_get_string (PREFIX("chdir_i%d_sub"), kind);
  c->resolved_sym = gfc_get_intrinsic_sub_symbol (name);
}


void
gfc_resolve_cmplx (gfc_expr * f, gfc_expr * x, gfc_expr * y, gfc_expr * kind)
{
  f->ts.type = BT_COMPLEX;
  f->ts.kind = (kind == NULL) ? gfc_default_real_kind
    : mpz_get_si (kind->value.integer);

  if (y == NULL)
    f->value.function.name =
      gfc_get_string ("__cmplx0_%d_%c%d", f->ts.kind,
		      gfc_type_letter (x->ts.type), x->ts.kind);
  else
    f->value.function.name =
      gfc_get_string ("__cmplx1_%d_%c%d_%c%d", f->ts.kind,
		      gfc_type_letter (x->ts.type), x->ts.kind,
		      gfc_type_letter (y->ts.type), y->ts.kind);
}

void
gfc_resolve_dcmplx (gfc_expr * f, gfc_expr * x, gfc_expr * y)
{
  gfc_resolve_cmplx (f, x, y, gfc_int_expr (gfc_default_double_kind));
}

void
gfc_resolve_conjg (gfc_expr * f, gfc_expr * x)
{
  f->ts = x->ts;
  f->value.function.name = gfc_get_string ("__conjg_%d", x->ts.kind);
}


void
gfc_resolve_cos (gfc_expr * f, gfc_expr * x)
{
  f->ts = x->ts;
  f->value.function.name =
    gfc_get_string ("__cos_%c%d", gfc_type_letter (x->ts.type), x->ts.kind);
}


void
gfc_resolve_cosh (gfc_expr * f, gfc_expr * x)
{
  f->ts = x->ts;
  f->value.function.name =
    gfc_get_string ("__cosh_%c%d", gfc_type_letter (x->ts.type), x->ts.kind);
}


void
gfc_resolve_count (gfc_expr * f, gfc_expr * mask, gfc_expr * dim)
{
  f->ts.type = BT_INTEGER;
  f->ts.kind = gfc_default_integer_kind;

  if (dim != NULL)
    {
      f->rank = mask->rank - 1;
      gfc_resolve_index (dim, 1);
      f->shape = gfc_copy_shape_excluding (mask->shape, mask->rank, dim);
    }

  f->value.function.name =
    gfc_get_string (PREFIX("count_%d_%c%d"), f->ts.kind,
		    gfc_type_letter (mask->ts.type), mask->ts.kind);
}


void
gfc_resolve_cshift (gfc_expr * f, gfc_expr * array,
		    gfc_expr * shift,
		    gfc_expr * dim)
{
  int n;

  f->ts = array->ts;
  f->rank = array->rank;
  f->shape = gfc_copy_shape (array->shape, array->rank);

  if (shift->rank > 0)
    n = 1;
  else
    n = 0;

  if (dim != NULL)
    {
      gfc_resolve_index (dim, 1);
      /* Convert dim to shift's kind, so we don't need so many variations.  */
      if (dim->ts.kind != shift->ts.kind)
	gfc_convert_type_warn (dim, &shift->ts, 2, 0);
    }
  f->value.function.name =
    gfc_get_string (PREFIX("cshift%d_%d"), n, shift->ts.kind);
}


void
gfc_resolve_dble (gfc_expr * f, gfc_expr * a)
{
  f->ts.type = BT_REAL;
  f->ts.kind = gfc_default_double_kind;
  f->value.function.name =
    gfc_get_string ("__dble_%c%d", gfc_type_letter (a->ts.type), a->ts.kind);
}


void
gfc_resolve_dim (gfc_expr * f, gfc_expr * x,
		 gfc_expr * y ATTRIBUTE_UNUSED)
{
  f->ts = x->ts;
  f->value.function.name =
    gfc_get_string ("__dim_%c%d", gfc_type_letter (x->ts.type), x->ts.kind);
}


void
gfc_resolve_dot_product (gfc_expr * f, gfc_expr * a, gfc_expr * b)
{
  gfc_expr temp;

  if (a->ts.type == BT_LOGICAL && b->ts.type == BT_LOGICAL)
    {
      f->ts.type = BT_LOGICAL;
      f->ts.kind = gfc_default_logical_kind;
    }
  else
    {
      temp.expr_type = EXPR_OP;
      gfc_clear_ts (&temp.ts);
      temp.value.op.operator = INTRINSIC_NONE;
      temp.value.op.op1 = a;
      temp.value.op.op2 = b;
      gfc_type_convert_binary (&temp);
      f->ts = temp.ts;
    }

  f->value.function.name =
    gfc_get_string (PREFIX("dot_product_%c%d"), gfc_type_letter (f->ts.type),
		    f->ts.kind);
}


void
gfc_resolve_dprod (gfc_expr * f,
		   gfc_expr * a ATTRIBUTE_UNUSED,
		   gfc_expr * b ATTRIBUTE_UNUSED)
{
  f->ts.kind = gfc_default_double_kind;
  f->ts.type = BT_REAL;

  f->value.function.name = gfc_get_string ("__dprod_r%d", f->ts.kind);
}


void
gfc_resolve_eoshift (gfc_expr * f, gfc_expr * array,
		     gfc_expr * shift,
		     gfc_expr * boundary,
		     gfc_expr * dim)
{
  int n;

  f->ts = array->ts;
  f->rank = array->rank;
  f->shape = gfc_copy_shape (array->shape, array->rank);

  n = 0;
  if (shift->rank > 0)
    n = n | 1;
  if (boundary && boundary->rank > 0)
    n = n | 2;

  /* Convert dim to the same type as shift, so we don't need quite so many
     variations.  */
  if (dim != NULL && dim->ts.kind != shift->ts.kind)
    gfc_convert_type_warn (dim, &shift->ts, 2, 0);

  f->value.function.name =
    gfc_get_string (PREFIX("eoshift%d_%d"), n, shift->ts.kind);
}


void
gfc_resolve_exp (gfc_expr * f, gfc_expr * x)
{
  f->ts = x->ts;
  f->value.function.name =
    gfc_get_string ("__exp_%c%d", gfc_type_letter (x->ts.type), x->ts.kind);
}


void
gfc_resolve_exponent (gfc_expr * f, gfc_expr * x)
{
  f->ts.type = BT_INTEGER;
  f->ts.kind = gfc_default_integer_kind;

  f->value.function.name = gfc_get_string ("__exponent_%d", x->ts.kind);
}


void
gfc_resolve_floor (gfc_expr * f, gfc_expr * a, gfc_expr * kind)
{
  f->ts.type = BT_INTEGER;
  f->ts.kind = (kind == NULL) ? gfc_default_integer_kind
    : mpz_get_si (kind->value.integer);

  f->value.function.name =
    gfc_get_string ("__floor%d_%c%d", f->ts.kind,
		    gfc_type_letter (a->ts.type), a->ts.kind);
}


void
gfc_resolve_fnum (gfc_expr * f, gfc_expr * n)
{
  f->ts.type = BT_INTEGER;
  f->ts.kind = gfc_default_integer_kind;
  if (n->ts.kind != f->ts.kind)
    gfc_convert_type (n, &f->ts, 2);
  f->value.function.name = gfc_get_string (PREFIX("fnum_i%d"), f->ts.kind);
}


void
gfc_resolve_fraction (gfc_expr * f, gfc_expr * x)
{
  f->ts = x->ts;
  f->value.function.name = gfc_get_string ("__fraction_%d", x->ts.kind);
}


/* Resolve single-argument g77 math intrinsics, eg BESY0, ERF.  */

void
gfc_resolve_g77_math1 (gfc_expr * f, gfc_expr * x)
{
  f->ts = x->ts;
  f->value.function.name = gfc_get_string ("<intrinsic>");
}


void
gfc_resolve_getcwd (gfc_expr * f, gfc_expr * n ATTRIBUTE_UNUSED)
{
  f->ts.type = BT_INTEGER;
  f->ts.kind = 4;
  f->value.function.name = gfc_get_string (PREFIX("getcwd"));
}


void
gfc_resolve_getgid (gfc_expr * f)
{
  f->ts.type = BT_INTEGER;
  f->ts.kind = 4;
  f->value.function.name = gfc_get_string (PREFIX("getgid"));
}


void
gfc_resolve_getpid (gfc_expr * f)
{
  f->ts.type = BT_INTEGER;
  f->ts.kind = 4;
  f->value.function.name = gfc_get_string (PREFIX("getpid"));
}


void
gfc_resolve_getuid (gfc_expr * f)
{
  f->ts.type = BT_INTEGER;
  f->ts.kind = 4;
  f->value.function.name = gfc_get_string (PREFIX("getuid"));
}

void
gfc_resolve_hostnm (gfc_expr * f, gfc_expr * n ATTRIBUTE_UNUSED)
{
  f->ts.type = BT_INTEGER;
  f->ts.kind = 4;
  f->value.function.name = gfc_get_string (PREFIX ("hostnm"));
}

void
gfc_resolve_iand (gfc_expr * f, gfc_expr * i, gfc_expr * j)
{
  /* If the kind of i and j are different, then g77 cross-promoted the
     kinds to the largest value.  The Fortran 95 standard requires the 
     kinds to match.  */
  if (i->ts.kind != j->ts.kind)
    {
      if (i->ts.kind == gfc_kind_max (i,j))
	gfc_convert_type(j, &i->ts, 2);
      else
	gfc_convert_type(i, &j->ts, 2);
    }

  f->ts = i->ts;
  f->value.function.name = gfc_get_string ("__iand_%d", i->ts.kind);
}


void
gfc_resolve_ibclr (gfc_expr * f, gfc_expr * i, gfc_expr * pos ATTRIBUTE_UNUSED)
{
  f->ts = i->ts;
  f->value.function.name = gfc_get_string ("__ibclr_%d", i->ts.kind);
}


void
gfc_resolve_ibits (gfc_expr * f, gfc_expr * i,
		   gfc_expr * pos ATTRIBUTE_UNUSED,
		   gfc_expr * len ATTRIBUTE_UNUSED)
{
  f->ts = i->ts;
  f->value.function.name = gfc_get_string ("__ibits_%d", i->ts.kind);
}


void
gfc_resolve_ibset (gfc_expr * f, gfc_expr * i,
		   gfc_expr * pos ATTRIBUTE_UNUSED)
{
  f->ts = i->ts;
  f->value.function.name = gfc_get_string ("__ibset_%d", i->ts.kind);
}


void
gfc_resolve_ichar (gfc_expr * f, gfc_expr * c)
{
  f->ts.type = BT_INTEGER;
  f->ts.kind = gfc_default_integer_kind;

  f->value.function.name = gfc_get_string ("__ichar_%d", c->ts.kind);
}


void
gfc_resolve_idnint (gfc_expr * f, gfc_expr * a)
{
  gfc_resolve_nint (f, a, NULL);
}


void
gfc_resolve_ierrno (gfc_expr * f)
{
  f->ts.type = BT_INTEGER;
  f->ts.kind = gfc_default_integer_kind;
  f->value.function.name = gfc_get_string (PREFIX("ierrno_i%d"), f->ts.kind);
}


void
gfc_resolve_ieor (gfc_expr * f, gfc_expr * i, gfc_expr * j)
{
  /* If the kind of i and j are different, then g77 cross-promoted the
     kinds to the largest value.  The Fortran 95 standard requires the 
     kinds to match.  */
  if (i->ts.kind != j->ts.kind)
    {
      if (i->ts.kind == gfc_kind_max (i,j))
	gfc_convert_type(j, &i->ts, 2);
      else
	gfc_convert_type(i, &j->ts, 2);
    }

  f->ts = i->ts;
  f->value.function.name = gfc_get_string ("__ieor_%d", i->ts.kind);
}


void
gfc_resolve_ior (gfc_expr * f, gfc_expr * i, gfc_expr * j)
{
  /* If the kind of i and j are different, then g77 cross-promoted the
     kinds to the largest value.  The Fortran 95 standard requires the 
     kinds to match.  */
  if (i->ts.kind != j->ts.kind)
    {
      if (i->ts.kind == gfc_kind_max (i,j))
	gfc_convert_type(j, &i->ts, 2);
      else
	gfc_convert_type(i, &j->ts, 2);
    }

  f->ts = i->ts;
  f->value.function.name = gfc_get_string ("__ior_%d", i->ts.kind);
}


void
gfc_resolve_int (gfc_expr * f, gfc_expr * a, gfc_expr * kind)
{
  f->ts.type = BT_INTEGER;
  f->ts.kind = (kind == NULL) ? gfc_default_integer_kind
    : mpz_get_si (kind->value.integer);

  f->value.function.name =
    gfc_get_string ("__int_%d_%c%d", f->ts.kind, gfc_type_letter (a->ts.type),
		    a->ts.kind);
}


void
gfc_resolve_ishft (gfc_expr * f, gfc_expr * i, gfc_expr * shift)
{
  f->ts = i->ts;
  f->value.function.name =
    gfc_get_string ("__ishft_%d_%d", i->ts.kind, shift->ts.kind);
}


void
gfc_resolve_ishftc (gfc_expr * f, gfc_expr * i, gfc_expr * shift,
		    gfc_expr * size)
{
  int s_kind;

  s_kind = (size == NULL) ? gfc_default_integer_kind : shift->ts.kind;

  f->ts = i->ts;
  f->value.function.name =
    gfc_get_string ("__ishftc_%d_%d_%d", i->ts.kind, shift->ts.kind, s_kind);
}


void
gfc_resolve_kill (gfc_expr * f, ATTRIBUTE_UNUSED gfc_expr * p,
                  ATTRIBUTE_UNUSED gfc_expr * s)
{
  f->ts.type = BT_INTEGER;
  f->ts.kind = gfc_default_integer_kind;

  f->value.function.name = gfc_get_string (PREFIX("kill_i%d"), f->ts.kind);
}


void
gfc_resolve_lbound (gfc_expr * f, gfc_expr * array,
		    gfc_expr * dim)
{
  static char lbound[] = "__lbound";

  f->ts.type = BT_INTEGER;
  f->ts.kind = gfc_default_integer_kind;

  if (dim == NULL)
    {
      f->rank = 1;
      f->shape = gfc_get_shape (1);
      mpz_init_set_ui (f->shape[0], array->rank);
    }

  f->value.function.name = lbound;
}


void
gfc_resolve_len (gfc_expr * f, gfc_expr * string)
{
  f->ts.type = BT_INTEGER;
  f->ts.kind = gfc_default_integer_kind;
  f->value.function.name = gfc_get_string ("__len_%d", string->ts.kind);
}


void
gfc_resolve_len_trim (gfc_expr * f, gfc_expr * string)
{
  f->ts.type = BT_INTEGER;
  f->ts.kind = gfc_default_integer_kind;
  f->value.function.name = gfc_get_string ("__len_trim%d", string->ts.kind);
}


void
gfc_resolve_link (gfc_expr * f, gfc_expr * p1 ATTRIBUTE_UNUSED,
	          gfc_expr * p2 ATTRIBUTE_UNUSED)
{
  f->ts.type = BT_INTEGER;
  f->ts.kind = gfc_default_integer_kind;
  f->value.function.name = gfc_get_string (PREFIX("link_i%d"), f->ts.kind);
}


void
gfc_resolve_log (gfc_expr * f, gfc_expr * x)
{
  f->ts = x->ts;
  f->value.function.name =
    gfc_get_string ("__log_%c%d", gfc_type_letter (x->ts.type), x->ts.kind);
}


void
gfc_resolve_log10 (gfc_expr * f, gfc_expr * x)
{
  f->ts = x->ts;
  f->value.function.name =
    gfc_get_string ("__log10_%c%d", gfc_type_letter (x->ts.type), x->ts.kind);
}


void
gfc_resolve_logical (gfc_expr * f, gfc_expr * a, gfc_expr * kind)
{
  f->ts.type = BT_LOGICAL;
  f->ts.kind = (kind == NULL) ? gfc_default_logical_kind
    : mpz_get_si (kind->value.integer);
  f->rank = a->rank;

  f->value.function.name =
    gfc_get_string ("__logical_%d_%c%d", f->ts.kind,
		    gfc_type_letter (a->ts.type), a->ts.kind);
}


void
gfc_resolve_matmul (gfc_expr * f, gfc_expr * a, gfc_expr * b)
{
  gfc_expr temp;

  if (a->ts.type == BT_LOGICAL && b->ts.type == BT_LOGICAL)
    {
      f->ts.type = BT_LOGICAL;
      f->ts.kind = gfc_default_logical_kind;
    }
  else
    {
      temp.expr_type = EXPR_OP;
      gfc_clear_ts (&temp.ts);
      temp.value.op.operator = INTRINSIC_NONE;
      temp.value.op.op1 = a;
      temp.value.op.op2 = b;
      gfc_type_convert_binary (&temp);
      f->ts = temp.ts;
    }

  f->rank = (a->rank == 2 && b->rank == 2) ? 2 : 1;

  f->value.function.name =
    gfc_get_string (PREFIX("matmul_%c%d"), gfc_type_letter (f->ts.type),
		    f->ts.kind);
}


static void
gfc_resolve_minmax (const char * name, gfc_expr * f, gfc_actual_arglist * args)
{
  gfc_actual_arglist *a;

  f->ts.type = args->expr->ts.type;
  f->ts.kind = args->expr->ts.kind;
  /* Find the largest type kind.  */
  for (a = args->next; a; a = a->next)
    {
      if (a->expr->ts.kind > f->ts.kind)
        f->ts.kind = a->expr->ts.kind;
    }

  /* Convert all parameters to the required kind.  */
  for (a = args; a; a = a->next)
    {
      if (a->expr->ts.kind != f->ts.kind)
        gfc_convert_type (a->expr, &f->ts, 2);
    }

  f->value.function.name =
    gfc_get_string (name, gfc_type_letter (f->ts.type), f->ts.kind);
}


void
gfc_resolve_max (gfc_expr * f, gfc_actual_arglist * args)
{
  gfc_resolve_minmax ("__max_%c%d", f, args);
}


void
gfc_resolve_maxloc (gfc_expr * f, gfc_expr * array, gfc_expr * dim,
		    gfc_expr * mask)
{
  const char *name;

  f->ts.type = BT_INTEGER;
  f->ts.kind = gfc_default_integer_kind;

  if (dim == NULL)
    f->rank = 1;
  else
    {
      f->rank = array->rank - 1;
      gfc_resolve_index (dim, 1);
    }

  name = mask ? "mmaxloc" : "maxloc";
  f->value.function.name =
    gfc_get_string (PREFIX("%s%d_%d_%c%d"), name, dim != NULL, f->ts.kind,
                    gfc_type_letter (array->ts.type), array->ts.kind);
}


void
gfc_resolve_maxval (gfc_expr * f, gfc_expr * array, gfc_expr * dim,
		    gfc_expr * mask)
{
  f->ts = array->ts;

  if (dim != NULL)
    {
      f->rank = array->rank - 1;
      gfc_resolve_index (dim, 1);
    }

  f->value.function.name =
    gfc_get_string (PREFIX("%s_%c%d"), mask ? "mmaxval" : "maxval",
		    gfc_type_letter (array->ts.type), array->ts.kind);
}


void
gfc_resolve_merge (gfc_expr * f, gfc_expr * tsource,
		   gfc_expr * fsource ATTRIBUTE_UNUSED,
		   gfc_expr * mask ATTRIBUTE_UNUSED)
{
  f->ts = tsource->ts;
  f->value.function.name =
    gfc_get_string ("__merge_%c%d", gfc_type_letter (tsource->ts.type),
		    tsource->ts.kind);
}


void
gfc_resolve_min (gfc_expr * f, gfc_actual_arglist * args)
{
  gfc_resolve_minmax ("__min_%c%d", f, args);
}


void
gfc_resolve_minloc (gfc_expr * f, gfc_expr * array, gfc_expr * dim,
		    gfc_expr * mask)
{
  const char *name;

  f->ts.type = BT_INTEGER;
  f->ts.kind = gfc_default_integer_kind;

  if (dim == NULL)
    f->rank = 1;
  else
    {
      f->rank = array->rank - 1;
      gfc_resolve_index (dim, 1);
    }

  name = mask ? "mminloc" : "minloc";
  f->value.function.name =
    gfc_get_string (PREFIX("%s%d_%d_%c%d"), name, dim != NULL, f->ts.kind,
                    gfc_type_letter (array->ts.type), array->ts.kind);
}


void
gfc_resolve_minval (gfc_expr * f, gfc_expr * array, gfc_expr * dim,
		    gfc_expr * mask)
{
  f->ts = array->ts;

  if (dim != NULL)
    {
      f->rank = array->rank - 1;
      gfc_resolve_index (dim, 1);
    }

  f->value.function.name =
    gfc_get_string (PREFIX("%s_%c%d"), mask ? "mminval" : "minval",
		    gfc_type_letter (array->ts.type), array->ts.kind);
}


void
gfc_resolve_mod (gfc_expr * f, gfc_expr * a,
		 gfc_expr * p ATTRIBUTE_UNUSED)
{
  f->ts = a->ts;
  f->value.function.name =
    gfc_get_string ("__mod_%c%d", gfc_type_letter (a->ts.type), a->ts.kind);
}


void
gfc_resolve_modulo (gfc_expr * f, gfc_expr * a,
		    gfc_expr * p ATTRIBUTE_UNUSED)
{
  f->ts = a->ts;
  f->value.function.name =
    gfc_get_string ("__modulo_%c%d", gfc_type_letter (a->ts.type),
		    a->ts.kind);
}

void
gfc_resolve_nearest (gfc_expr * f, gfc_expr * a, gfc_expr *p ATTRIBUTE_UNUSED)
{
  f->ts = a->ts;
  f->value.function.name =
    gfc_get_string ("__nearest_%c%d", gfc_type_letter (a->ts.type),
            a->ts.kind);
}

void
gfc_resolve_nint (gfc_expr * f, gfc_expr * a, gfc_expr * kind)
{
  f->ts.type = BT_INTEGER;
  f->ts.kind = (kind == NULL) ? gfc_default_integer_kind
    : mpz_get_si (kind->value.integer);

  f->value.function.name =
    gfc_get_string ("__nint_%d_%d", f->ts.kind, a->ts.kind);
}


void
gfc_resolve_not (gfc_expr * f, gfc_expr * i)
{
  f->ts = i->ts;
  f->value.function.name = gfc_get_string ("__not_%d", i->ts.kind);
}


void
gfc_resolve_pack (gfc_expr * f,
                  gfc_expr * array ATTRIBUTE_UNUSED,
		  gfc_expr * mask,
		  gfc_expr * vector ATTRIBUTE_UNUSED)
{
  f->ts = array->ts;
  f->rank = 1;

  if (mask->rank != 0)
    f->value.function.name = PREFIX("pack");
  else
    {
      /* We convert mask to default logical only in the scalar case.
	 In the array case we can simply read the array as if it were
	 of type default logical.  */
      if (mask->ts.kind != gfc_default_logical_kind)
	{
	  gfc_typespec ts;

	  ts.type = BT_LOGICAL;
	  ts.kind = gfc_default_logical_kind;
	  gfc_convert_type (mask, &ts, 2);
	}

      f->value.function.name = PREFIX("pack_s");
    }
}


void
gfc_resolve_product (gfc_expr * f, gfc_expr * array, gfc_expr * dim,
		     gfc_expr * mask)
{
  f->ts = array->ts;

  if (dim != NULL)
    {
      f->rank = array->rank - 1;
      gfc_resolve_index (dim, 1);
    }

  f->value.function.name =
    gfc_get_string (PREFIX("%s_%c%d"), mask ? "mproduct" : "product",
		    gfc_type_letter (array->ts.type), array->ts.kind);
}


void
gfc_resolve_real (gfc_expr * f, gfc_expr * a, gfc_expr * kind)
{
  f->ts.type = BT_REAL;

  if (kind != NULL)
    f->ts.kind = mpz_get_si (kind->value.integer);
  else
    f->ts.kind = (a->ts.type == BT_COMPLEX) ?
      a->ts.kind : gfc_default_real_kind;

  f->value.function.name =
    gfc_get_string ("__real_%d_%c%d", f->ts.kind,
		    gfc_type_letter (a->ts.type), a->ts.kind);
}


void
gfc_resolve_rename (gfc_expr * f, gfc_expr * p1 ATTRIBUTE_UNUSED,
	            gfc_expr * p2 ATTRIBUTE_UNUSED)
{
  f->ts.type = BT_INTEGER;
  f->ts.kind = gfc_default_integer_kind;
  f->value.function.name = gfc_get_string (PREFIX("rename_i%d"), f->ts.kind);
}


void
gfc_resolve_repeat (gfc_expr * f, gfc_expr * string,
		    gfc_expr * ncopies ATTRIBUTE_UNUSED)
{
  f->ts.type = BT_CHARACTER;
  f->ts.kind = string->ts.kind;
  f->value.function.name = gfc_get_string ("__repeat_%d", string->ts.kind);
}


void
gfc_resolve_reshape (gfc_expr * f, gfc_expr * source, gfc_expr * shape,
		     gfc_expr * pad ATTRIBUTE_UNUSED,
		     gfc_expr * order ATTRIBUTE_UNUSED)
{
  mpz_t rank;
  int kind;
  int i;

  f->ts = source->ts;

  gfc_array_size (shape, &rank);
  f->rank = mpz_get_si (rank);
  mpz_clear (rank);
  switch (source->ts.type)
    {
    case BT_COMPLEX:
      kind = source->ts.kind * 2;
      break;

    case BT_REAL:
    case BT_INTEGER:
    case BT_LOGICAL:
      kind = source->ts.kind;
      break;

    default:
      kind = 0;
      break;
    }

  switch (kind)
    {
    case 4:
    case 8:
    /* case 16: */
      if (source->ts.type == BT_COMPLEX)
	f->value.function.name =
	  gfc_get_string (PREFIX("reshape_%c%d"),
			  gfc_type_letter (BT_COMPLEX), source->ts.kind);
      else
	f->value.function.name =
	  gfc_get_string (PREFIX("reshape_%d"), source->ts.kind);

      break;

    default:
      f->value.function.name = PREFIX("reshape");
      break;
    }

  /* TODO: Make this work with a constant ORDER parameter.  */
  if (shape->expr_type == EXPR_ARRAY
      && gfc_is_constant_expr (shape)
      && order == NULL)
    {
      gfc_constructor *c;
      f->shape = gfc_get_shape (f->rank);
      c = shape->value.constructor;
      for (i = 0; i < f->rank; i++)
	{
	  mpz_init_set (f->shape[i], c->expr->value.integer);
	  c = c->next;
	}
    }

  /* Force-convert both SHAPE and ORDER to index_kind so that we don't need
     so many runtime variations.  */
  if (shape->ts.kind != gfc_index_integer_kind)
    {
      gfc_typespec ts = shape->ts;
      ts.kind = gfc_index_integer_kind;
      gfc_convert_type_warn (shape, &ts, 2, 0);
    }
  if (order && order->ts.kind != gfc_index_integer_kind)
    gfc_convert_type_warn (order, &shape->ts, 2, 0);
}


void
gfc_resolve_rrspacing (gfc_expr * f, gfc_expr * x)
{
  f->ts = x->ts;
  f->value.function.name = gfc_get_string ("__rrspacing_%d", x->ts.kind);
}


void
gfc_resolve_scale (gfc_expr * f, gfc_expr * x, gfc_expr * i)
{
  f->ts = x->ts;

  /* The implementation calls scalbn which takes an int as the
     second argument.  */
  if (i->ts.kind != gfc_c_int_kind)
    {
      gfc_typespec ts;

      ts.type = BT_INTEGER;
      ts.kind = gfc_default_integer_kind;

      gfc_convert_type_warn (i, &ts, 2, 0);
    }

  f->value.function.name = gfc_get_string ("__scale_%d", x->ts.kind);
}


void
gfc_resolve_scan (gfc_expr * f, gfc_expr * string,
		  gfc_expr * set ATTRIBUTE_UNUSED,
		  gfc_expr * back ATTRIBUTE_UNUSED)
{
  f->ts.type = BT_INTEGER;
  f->ts.kind = gfc_default_integer_kind;
  f->value.function.name = gfc_get_string ("__scan_%d", string->ts.kind);
}


void
gfc_resolve_set_exponent (gfc_expr * f, gfc_expr * x, gfc_expr * i)
{
  f->ts = x->ts;

  /* The library implementation uses GFC_INTEGER_4 unconditionally,
     convert type so we don't have to implement all possible
     permutations.  */
  if (i->ts.kind != 4)
    {
      gfc_typespec ts;

      ts.type = BT_INTEGER;
      ts.kind = gfc_default_integer_kind;

      gfc_convert_type_warn (i, &ts, 2, 0);
    }

  f->value.function.name = gfc_get_string ("__set_exponent_%d", x->ts.kind);
}


void
gfc_resolve_shape (gfc_expr * f, gfc_expr * array)
{
  f->ts.type = BT_INTEGER;
  f->ts.kind = gfc_default_integer_kind;
  f->rank = 1;
  f->value.function.name = gfc_get_string (PREFIX("shape_%d"), f->ts.kind);
  f->shape = gfc_get_shape (1);
  mpz_init_set_ui (f->shape[0], array->rank);
}


void
gfc_resolve_sign (gfc_expr * f, gfc_expr * a, gfc_expr * b ATTRIBUTE_UNUSED)
{
  f->ts = a->ts;
  f->value.function.name =
    gfc_get_string ("__sign_%c%d", gfc_type_letter (a->ts.type), a->ts.kind);
}


void
gfc_resolve_sin (gfc_expr * f, gfc_expr * x)
{
  f->ts = x->ts;
  f->value.function.name =
    gfc_get_string ("__sin_%c%d", gfc_type_letter (x->ts.type), x->ts.kind);
}


void
gfc_resolve_sinh (gfc_expr * f, gfc_expr * x)
{
  f->ts = x->ts;
  f->value.function.name =
    gfc_get_string ("__sinh_%c%d", gfc_type_letter (x->ts.type), x->ts.kind);
}


void
gfc_resolve_spacing (gfc_expr * f, gfc_expr * x)
{
  f->ts = x->ts;
  f->value.function.name = gfc_get_string ("__spacing_%d", x->ts.kind);
}


void
gfc_resolve_spread (gfc_expr * f, gfc_expr * source,
		    gfc_expr * dim,
		    gfc_expr * ncopies)
{
  f->ts = source->ts;
  f->rank = source->rank + 1;
  f->value.function.name = PREFIX("spread");

  gfc_resolve_index (dim, 1);
  gfc_resolve_index (ncopies, 1);
}


void
gfc_resolve_sqrt (gfc_expr * f, gfc_expr * x)
{
  f->ts = x->ts;
  f->value.function.name =
    gfc_get_string ("__sqrt_%c%d", gfc_type_letter (x->ts.type), x->ts.kind);
}


/* Resolve the g77 compatibility function STAT AND FSTAT.  */

void
gfc_resolve_stat (gfc_expr * f, gfc_expr * n ATTRIBUTE_UNUSED,
		  gfc_expr * a ATTRIBUTE_UNUSED)
{
  f->ts.type = BT_INTEGER;
  f->ts.kind = gfc_default_integer_kind;
  f->value.function.name = gfc_get_string (PREFIX("stat_i%d"), f->ts.kind);
}


void
gfc_resolve_fstat (gfc_expr * f, gfc_expr * n, gfc_expr * a ATTRIBUTE_UNUSED)
{
  f->ts.type = BT_INTEGER;
  f->ts.kind = gfc_default_integer_kind;
  if (n->ts.kind != f->ts.kind)
    gfc_convert_type (n, &f->ts, 2);

  f->value.function.name = gfc_get_string (PREFIX("fstat_i%d"), f->ts.kind);
}


void
gfc_resolve_sum (gfc_expr * f, gfc_expr * array, gfc_expr * dim,
		 gfc_expr * mask)
{
  f->ts = array->ts;

  if (dim != NULL)
    {
      f->rank = array->rank - 1;
      gfc_resolve_index (dim, 1);
    }

  f->value.function.name =
    gfc_get_string (PREFIX("%s_%c%d"), mask ? "msum" : "sum",
		    gfc_type_letter (array->ts.type), array->ts.kind);
}


void
gfc_resolve_symlnk (gfc_expr * f, gfc_expr * p1 ATTRIBUTE_UNUSED,
	            gfc_expr * p2 ATTRIBUTE_UNUSED)
{
  f->ts.type = BT_INTEGER;
  f->ts.kind = gfc_default_integer_kind;
  f->value.function.name = gfc_get_string (PREFIX("symlnk_i%d"), f->ts.kind);
}


/* Resolve the g77 compatibility function SYSTEM.  */

void
gfc_resolve_system (gfc_expr * f, gfc_expr * n ATTRIBUTE_UNUSED)
{
  f->ts.type = BT_INTEGER;
  f->ts.kind = 4;
  f->value.function.name = gfc_get_string (PREFIX("system"));
}


void
gfc_resolve_tan (gfc_expr * f, gfc_expr * x)
{
  f->ts = x->ts;
  f->value.function.name =
    gfc_get_string ("__tan_%c%d", gfc_type_letter (x->ts.type), x->ts.kind);
}


void
gfc_resolve_tanh (gfc_expr * f, gfc_expr * x)
{
  f->ts = x->ts;
  f->value.function.name =
    gfc_get_string ("__tanh_%c%d", gfc_type_letter (x->ts.type), x->ts.kind);
}


void
gfc_resolve_time (gfc_expr * f)
{
  f->ts.type = BT_INTEGER;
  f->ts.kind = 4;
  f->value.function.name = gfc_get_string (PREFIX("time_func"));
}


void
gfc_resolve_time8 (gfc_expr * f)
{
  f->ts.type = BT_INTEGER;
  f->ts.kind = 8;
  f->value.function.name = gfc_get_string (PREFIX("time8_func"));
}


void
gfc_resolve_transfer (gfc_expr * f, gfc_expr * source ATTRIBUTE_UNUSED,
		      gfc_expr * mold, gfc_expr * size)
{
  /* TODO: Make this do something meaningful.  */
  static char transfer0[] = "__transfer0", transfer1[] = "__transfer1";

  f->ts = mold->ts;

  if (size == NULL && mold->rank == 0)
    {
      f->rank = 0;
      f->value.function.name = transfer0;
    }
  else
    {
      f->rank = 1;
      f->value.function.name = transfer1;
    }
}


void
gfc_resolve_transpose (gfc_expr * f, gfc_expr * matrix)
{
  int kind;

  f->ts = matrix->ts;
  f->rank = 2;
  if (matrix->shape)
    {
      f->shape = gfc_get_shape (2);
      mpz_init_set (f->shape[0], matrix->shape[1]);
      mpz_init_set (f->shape[1], matrix->shape[0]);
    }

  kind = matrix->ts.kind;

  switch (kind)
    {
    case 4:
    case 8:
      switch (matrix->ts.type)
        {
        case BT_COMPLEX:
          f->value.function.name =
            gfc_get_string (PREFIX("transpose_c%d"), kind);
          break;

        case BT_INTEGER:
        case BT_REAL:
        case BT_LOGICAL:
	  /* Use the integer routines for real and logical cases.  This
	     assumes they all have the same alignment requirements.  */
          f->value.function.name =
            gfc_get_string (PREFIX("transpose_i%d"), kind);
          break;

        default:
          f->value.function.name = PREFIX("transpose");
          break;
        }
      break;

    default:
      f->value.function.name = PREFIX("transpose");
    }
}


void
gfc_resolve_trim (gfc_expr * f, gfc_expr * string)
{
  f->ts.type = BT_CHARACTER;
  f->ts.kind = string->ts.kind;
  f->value.function.name = gfc_get_string ("__trim_%d", string->ts.kind);
}


void
gfc_resolve_ubound (gfc_expr * f, gfc_expr * array,
		    gfc_expr * dim)
{
  static char ubound[] = "__ubound";

  f->ts.type = BT_INTEGER;
  f->ts.kind = gfc_default_integer_kind;

  if (dim == NULL)
    {
      f->rank = 1;
      f->shape = gfc_get_shape (1);
      mpz_init_set_ui (f->shape[0], array->rank);
    }

  f->value.function.name = ubound;
}


/* Resolve the g77 compatibility function UMASK.  */

void
gfc_resolve_umask (gfc_expr * f, gfc_expr * n)
{
  f->ts.type = BT_INTEGER;
  f->ts.kind = n->ts.kind;
  f->value.function.name = gfc_get_string (PREFIX("umask_i%d"), n->ts.kind);
}


/* Resolve the g77 compatibility function UNLINK.  */

void
gfc_resolve_unlink (gfc_expr * f, gfc_expr * n ATTRIBUTE_UNUSED)
{
  f->ts.type = BT_INTEGER;
  f->ts.kind = 4;
  f->value.function.name = gfc_get_string (PREFIX("unlink"));
}

void
gfc_resolve_unpack (gfc_expr * f, gfc_expr * vector, gfc_expr * mask,
		    gfc_expr * field ATTRIBUTE_UNUSED)
{
  f->ts.type = vector->ts.type;
  f->ts.kind = vector->ts.kind;
  f->rank = mask->rank;

  f->value.function.name =
    gfc_get_string (PREFIX("unpack%d"), field->rank > 0 ? 1 : 0);
}


void
gfc_resolve_verify (gfc_expr * f, gfc_expr * string,
		    gfc_expr * set ATTRIBUTE_UNUSED,
		    gfc_expr * back ATTRIBUTE_UNUSED)
{
  f->ts.type = BT_INTEGER;
  f->ts.kind = gfc_default_integer_kind;
  f->value.function.name = gfc_get_string ("__verify_%d", string->ts.kind);
}


/* Intrinsic subroutine resolution.  */

void
gfc_resolve_cpu_time (gfc_code * c ATTRIBUTE_UNUSED)
{
  const char *name;

  name = gfc_get_string (PREFIX("cpu_time_%d"),
			 c->ext.actual->expr->ts.kind);
  c->resolved_sym = gfc_get_intrinsic_sub_symbol (name);
}


void
gfc_resolve_mvbits (gfc_code * c)
{
  const char *name;
  int kind;

  kind = c->ext.actual->expr->ts.kind;
  name = gfc_get_string (PREFIX("mvbits_i%d"), kind);

  c->resolved_sym = gfc_get_intrinsic_sub_symbol (name);
}


void
gfc_resolve_random_number (gfc_code * c ATTRIBUTE_UNUSED)
{
  const char *name;
  int kind;

  kind = c->ext.actual->expr->ts.kind;
  if (c->ext.actual->expr->rank == 0)
    name = gfc_get_string (PREFIX("random_r%d"), kind);
  else
    name = gfc_get_string (PREFIX("arandom_r%d"), kind);
  
  c->resolved_sym = gfc_get_intrinsic_sub_symbol (name);
}


void
gfc_resolve_rename_sub (gfc_code * c)
{
  const char *name;
  int kind;

  if (c->ext.actual->next->next->expr != NULL)
    kind = c->ext.actual->next->next->expr->ts.kind;
  else
    kind = gfc_default_integer_kind;

  name = gfc_get_string (PREFIX("rename_i%d_sub"), kind);
  c->resolved_sym = gfc_get_intrinsic_sub_symbol (name);
}


void
gfc_resolve_kill_sub (gfc_code * c)
{
  const char *name;
  int kind;

  if (c->ext.actual->next->next->expr != NULL)
    kind = c->ext.actual->next->next->expr->ts.kind;
  else
    kind = gfc_default_integer_kind;

  name = gfc_get_string (PREFIX("kill_i%d_sub"), kind);
  c->resolved_sym = gfc_get_intrinsic_sub_symbol (name);
}
    

void
gfc_resolve_link_sub (gfc_code * c)
{
  const char *name;
  int kind;

  if (c->ext.actual->next->next->expr != NULL)
    kind = c->ext.actual->next->next->expr->ts.kind;
  else
    kind = gfc_default_integer_kind;

  name = gfc_get_string (PREFIX("link_i%d_sub"), kind);
  c->resolved_sym = gfc_get_intrinsic_sub_symbol (name);
}


void
gfc_resolve_symlnk_sub (gfc_code * c)
{
  const char *name;
  int kind;

  if (c->ext.actual->next->next->expr != NULL)
    kind = c->ext.actual->next->next->expr->ts.kind;
  else
    kind = gfc_default_integer_kind;

  name = gfc_get_string (PREFIX("symlnk_i%d_sub"), kind);
  c->resolved_sym = gfc_get_intrinsic_sub_symbol (name);
}


/* G77 compatibility subroutines etime() and dtime().  */

void
gfc_resolve_etime_sub (gfc_code * c)
{
  const char *name;

  name = gfc_get_string (PREFIX("etime_sub"));
  c->resolved_sym = gfc_get_intrinsic_sub_symbol (name);
}


/* G77 compatibility subroutine second().  */

void
gfc_resolve_second_sub (gfc_code * c)
{
  const char *name;

  name = gfc_get_string (PREFIX("second_sub"));
  c->resolved_sym = gfc_get_intrinsic_sub_symbol (name);
}


void
gfc_resolve_sleep_sub (gfc_code * c)
{
  const char *name;
  int kind;

  if (c->ext.actual->expr != NULL)
    kind = c->ext.actual->expr->ts.kind;
  else
    kind = gfc_default_integer_kind;

  name = gfc_get_string (PREFIX("sleep_i%d_sub"), kind);
  c->resolved_sym = gfc_get_intrinsic_sub_symbol (name);
}


/* G77 compatibility function srand().  */

void
gfc_resolve_srand (gfc_code * c)
{
  const char *name;
  name = gfc_get_string (PREFIX("srand"));
  c->resolved_sym = gfc_get_intrinsic_sub_symbol (name);
}


/* Resolve the getarg intrinsic subroutine.  */

void
gfc_resolve_getarg (gfc_code * c)
{
  const char *name;
  int kind;

  kind = gfc_default_integer_kind;
  name = gfc_get_string (PREFIX("getarg_i%d"), kind);
  c->resolved_sym = gfc_get_intrinsic_sub_symbol (name);
}

/* Resolve the getcwd intrinsic subroutine.  */

void
gfc_resolve_getcwd_sub (gfc_code * c)
{
  const char *name;
  int kind;

  if (c->ext.actual->next->expr != NULL)
    kind = c->ext.actual->next->expr->ts.kind;
  else
    kind = gfc_default_integer_kind;

  name = gfc_get_string (PREFIX("getcwd_i%d_sub"), kind);
  c->resolved_sym = gfc_get_intrinsic_sub_symbol (name);
}


/* Resolve the get_command intrinsic subroutine.  */

void
gfc_resolve_get_command (gfc_code * c)
{
  const char *name;
  int kind;

  kind = gfc_default_integer_kind;
  name = gfc_get_string (PREFIX("get_command_i%d"), kind);
  c->resolved_sym = gfc_get_intrinsic_sub_symbol (name);
}


/* Resolve the get_command_argument intrinsic subroutine.  */

void
gfc_resolve_get_command_argument (gfc_code * c)
{
  const char *name;
  int kind;

  kind = gfc_default_integer_kind;
  name = gfc_get_string (PREFIX("get_command_argument_i%d"), kind);
  c->resolved_sym = gfc_get_intrinsic_sub_symbol (name);
}

/* Resolve the get_environment_variable intrinsic subroutine.  */

void
gfc_resolve_get_environment_variable (gfc_code * code)
{
  const char *name;
  int kind;

  kind = gfc_default_integer_kind;
  name = gfc_get_string (PREFIX("get_environment_variable_i%d"), kind);
  code->resolved_sym = gfc_get_intrinsic_sub_symbol (name);
}

/* Resolve the SYSTEM intrinsic subroutine.  */

void
gfc_resolve_system_sub (gfc_code * c)
{
  const char *name;

  name = gfc_get_string (PREFIX("system_sub"));
  c->resolved_sym = gfc_get_intrinsic_sub_symbol (name);
}

/* Determine if the arguments to SYSTEM_CLOCK are INTEGER(4) or INTEGER(8) */

void
gfc_resolve_system_clock (gfc_code * c)
{
  const char *name;
  int kind;

  if (c->ext.actual->expr != NULL)
    kind = c->ext.actual->expr->ts.kind;
  else if (c->ext.actual->next->expr != NULL)
      kind = c->ext.actual->next->expr->ts.kind;
  else if (c->ext.actual->next->next->expr != NULL)
      kind = c->ext.actual->next->next->expr->ts.kind;
  else
    kind = gfc_default_integer_kind;

  name = gfc_get_string (PREFIX("system_clock_%d"), kind);
  c->resolved_sym = gfc_get_intrinsic_sub_symbol (name);
}

/* Resolve the EXIT intrinsic subroutine.  */

void
gfc_resolve_exit (gfc_code * c)
{
  const char *name;
  int kind;

  if (c->ext.actual->expr != NULL)
    kind = c->ext.actual->expr->ts.kind;
  else
    kind = gfc_default_integer_kind;

  name = gfc_get_string (PREFIX("exit_i%d"), kind);
  c->resolved_sym = gfc_get_intrinsic_sub_symbol (name);
}

/* Resolve the FLUSH intrinsic subroutine.  */

void
gfc_resolve_flush (gfc_code * c)
{
  const char *name;
  gfc_typespec ts;
  gfc_expr *n;

  ts.type = BT_INTEGER;
  ts.kind = gfc_default_integer_kind;
  n = c->ext.actual->expr;
  if (n != NULL
      && n->ts.kind != ts.kind)
    gfc_convert_type (n, &ts, 2);

  name = gfc_get_string (PREFIX("flush_i%d"), ts.kind);
  c->resolved_sym = gfc_get_intrinsic_sub_symbol (name);
}


void
gfc_resolve_gerror (gfc_code * c)
{
  c->resolved_sym = gfc_get_intrinsic_sub_symbol (PREFIX ("gerror"));
}


void
gfc_resolve_getlog (gfc_code * c)
{
  c->resolved_sym = gfc_get_intrinsic_sub_symbol (PREFIX ("getlog"));
}


void
gfc_resolve_hostnm_sub (gfc_code * c)
{
  const char *name;
  int kind;

  if (c->ext.actual->next->expr != NULL)
    kind = c->ext.actual->next->expr->ts.kind;
  else
    kind = gfc_default_integer_kind;

  name = gfc_get_string (PREFIX("hostnm_i%d_sub"), kind);
  c->resolved_sym = gfc_get_intrinsic_sub_symbol (name);
}


void
gfc_resolve_perror (gfc_code * c)
{
  c->resolved_sym = gfc_get_intrinsic_sub_symbol (PREFIX ("perror_sub"));
}

/* Resolve the STAT and FSTAT intrinsic subroutines.  */

void
gfc_resolve_stat_sub (gfc_code * c)
{
  const char *name;

  name = gfc_get_string (PREFIX("stat_i%d_sub"), gfc_default_integer_kind);
  c->resolved_sym = gfc_get_intrinsic_sub_symbol (name);
}


void
gfc_resolve_fstat_sub (gfc_code * c)
{
  const char *name;
  gfc_expr *u;
  gfc_typespec *ts;

  u = c->ext.actual->expr;
  ts = &c->ext.actual->next->expr->ts;
  if (u->ts.kind != ts->kind)
    gfc_convert_type (u, ts, 2);
  name = gfc_get_string (PREFIX("fstat_i%d_sub"), ts->kind);
  c->resolved_sym = gfc_get_intrinsic_sub_symbol (name);
}

/* Resolve the UMASK intrinsic subroutine.  */

void
gfc_resolve_umask_sub (gfc_code * c)
{
  const char *name;
  int kind;

  if (c->ext.actual->next->expr != NULL)
    kind = c->ext.actual->next->expr->ts.kind;
  else
    kind = gfc_default_integer_kind;

  name = gfc_get_string (PREFIX("umask_i%d_sub"), kind);
  c->resolved_sym = gfc_get_intrinsic_sub_symbol (name);
}

/* Resolve the UNLINK intrinsic subroutine.  */

void
gfc_resolve_unlink_sub (gfc_code * c)
{
  const char *name;
  int kind;

  if (c->ext.actual->next->expr != NULL)
    kind = c->ext.actual->next->expr->ts.kind;
  else
    kind = gfc_default_integer_kind;

  name = gfc_get_string (PREFIX("unlink_i%d_sub"), kind);
  c->resolved_sym = gfc_get_intrinsic_sub_symbol (name);
}