code:
/* Copyright (C) 1995,1996,1997,1998,2000,2001, 2005, 2006 Free Software Foundation, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#ifndef __GH_H
#define __GH_H

/* This needs to be included outside of the extern "C" block.
 */
#include <libguile.h>

#if SCM_ENABLE_DEPRECATED

#ifdef __cplusplus
extern "C" {
#endif

/* gcc has extern inline functions that are basically as fast as macros */
#ifdef __GNUC__
# define INL inline
# define EXTINL extern inline
#else
# define INL
#define EXTINL
#endif /* __GNUC__ */

SCM_API void gh_enter(int argc, char *argv[],
		      void (*c_main_prog)(int, char **));
#define gh_init () scm_init_guile ()
SCM_API void gh_repl(int argc, char *argv[]);
SCM_API SCM gh_catch(SCM tag, scm_t_catch_body body, void *body_data,
		     scm_t_catch_handler handler, void *handler_data);

SCM_API SCM gh_standard_handler(void *data, SCM tag, SCM throw_args);

SCM_API SCM gh_eval_str(const char *scheme_code);
SCM_API SCM gh_eval_str_with_catch(const char *scheme_code, scm_t_catch_handler handler);
SCM_API SCM gh_eval_str_with_standard_handler(const char *scheme_code);
SCM_API SCM gh_eval_str_with_stack_saving_handler(const char *scheme_code);

SCM_API SCM gh_eval_file(const char *fname);
#define gh_load(fname) gh_eval_file(fname)
SCM_API SCM gh_eval_file_with_catch(const char *scheme_code, scm_t_catch_handler handler);
SCM_API SCM gh_eval_file_with_standard_handler(const char *scheme_code);

#define gh_defer_ints() SCM_CRITICAL_SECTION_START
#define gh_allow_ints() SCM_CRITICAL_SECTION_END

SCM_API SCM gh_new_procedure(const char *proc_name, SCM (*fn)(),
			     int n_required_args, int n_optional_args,
			     int varp);
SCM_API SCM gh_new_procedure0_0(const char *proc_name, SCM (*fn)(void));
SCM_API SCM gh_new_procedure0_1(const char *proc_name, SCM (*fn)(SCM));
SCM_API SCM gh_new_procedure0_2(const char *proc_name, SCM (*fn)(SCM, SCM));
SCM_API SCM gh_new_procedure1_0(const char *proc_name, SCM (*fn)(SCM));
SCM_API SCM gh_new_procedure1_1(const char *proc_name, SCM (*fn)(SCM, SCM));
SCM_API SCM gh_new_procedure1_2(const char *proc_name, SCM (*fn)(SCM, SCM, SCM));
SCM_API SCM gh_new_procedure2_0(const char *proc_name, SCM (*fn)(SCM, SCM));
SCM_API SCM gh_new_procedure2_1(const char *proc_name, SCM (*fn)(SCM, SCM, SCM));
SCM_API SCM gh_new_procedure2_2(const char *proc_name, SCM (*fn)(SCM, SCM, SCM, SCM));
SCM_API SCM gh_new_procedure3_0(const char *proc_name, SCM (*fn)(SCM, SCM, SCM));
SCM_API SCM gh_new_procedure4_0(const char *proc_name, SCM (*fn)(SCM, SCM, SCM, SCM));
SCM_API SCM gh_new_procedure5_0(const char *proc_name, SCM (*fn)(SCM, SCM, SCM, SCM, SCM));

/* C to Scheme conversion */
SCM_API SCM gh_bool2scm(int x);
SCM_API SCM gh_int2scm(int x);
SCM_API SCM gh_ulong2scm(unsigned long x);
SCM_API SCM gh_long2scm(long x);
SCM_API SCM gh_double2scm(double x);
SCM_API SCM gh_char2scm(char c);
SCM_API SCM gh_str2scm(const char *s, size_t len);
SCM_API SCM gh_str02scm(const char *s);
SCM_API void gh_set_substr(const char *src, SCM dst, long start, size_t len);
SCM_API SCM gh_symbol2scm(const char *symbol_str);
SCM_API SCM gh_ints2scm(const int *d, long n);

SCM_API SCM gh_chars2byvect(const char *d, long n);
SCM_API SCM gh_shorts2svect(const short *d, long n);
SCM_API SCM gh_longs2ivect(const long *d, long n);
SCM_API SCM gh_ulongs2uvect(const unsigned long *d, long n);
SCM_API SCM gh_floats2fvect(const float *d, long n);
SCM_API SCM gh_doubles2dvect(const double *d, long n);

SCM_API SCM gh_doubles2scm(const double *d, long n);

/* Scheme to C conversion */
SCM_API int gh_scm2bool(SCM obj);
SCM_API int gh_scm2int(SCM obj);
SCM_API unsigned long gh_scm2ulong(SCM obj);
SCM_API long gh_scm2long(SCM obj);
SCM_API char gh_scm2char(SCM obj);
SCM_API double gh_scm2double(SCM obj);
SCM_API char *gh_scm2newstr(SCM str, size_t *lenp);
SCM_API void gh_get_substr(SCM src, char *dst, long start, size_t len);
SCM_API char *gh_symbol2newstr(SCM sym, size_t *lenp);
SCM_API char *gh_scm2chars(SCM vector, char *result);
SCM_API short *gh_scm2shorts(SCM vector, short *result);
SCM_API long *gh_scm2longs(SCM vector, long *result);
SCM_API float *gh_scm2floats(SCM vector, float *result);
SCM_API double *gh_scm2doubles(SCM vector, double *result);

/* type predicates: tell you if an SCM object has a given type */
SCM_API int gh_boolean_p(SCM val);
SCM_API int gh_symbol_p(SCM val);
SCM_API int gh_char_p(SCM val);
SCM_API int gh_vector_p(SCM val);
SCM_API int gh_pair_p(SCM val);
SCM_API int gh_number_p(SCM val);
SCM_API int gh_string_p(SCM val);
SCM_API int gh_procedure_p(SCM val);
SCM_API int gh_list_p(SCM val);
SCM_API int gh_inexact_p(SCM val);
SCM_API int gh_exact_p(SCM val);

/* more predicates */
SCM_API int gh_eq_p(SCM x, SCM y);
SCM_API int gh_eqv_p(SCM x, SCM y);
SCM_API int gh_equal_p(SCM x, SCM y);
SCM_API int gh_string_equal_p(SCM s1, SCM s2);
SCM_API int gh_null_p(SCM l);

/* standard Scheme procedures available from C */

#define gh_not(x) scm_not(x)

SCM_API SCM gh_define(const char *name, SCM val);

/* string manipulation routines */
#define gh_make_string(k, chr)       scm_make_string(k, chr)
#define gh_string_length(str)        scm_string_length(str)
#define gh_string_ref(str, k)        scm_string_ref(str, k)
#define gh_string_set_x(str, k, chr) scm_string_set_x(str, k, chr)
#define gh_substring(str, start, end) scm_substring(str, start, end)
#define gh_string_append(args)       scm_string_append(args)

/* vector manipulation routines */
/* note that gh_vector() does not behave quite like the Scheme (vector
   obj1 obj2 ...), because the interpreter engine does not pass the
   data element by element, but rather as a list.  thus, gh_vector()
   ends up being identical to gh_list_to_vector() */
#define gh_vector(ls) scm_vector(ls)
SCM_API SCM gh_make_vector(SCM length, SCM val);
SCM_API SCM gh_vector_set_x(SCM vec, SCM pos, SCM val);
SCM_API SCM gh_vector_ref(SCM vec, SCM pos);
SCM_API unsigned long gh_vector_length (SCM v);
SCM_API unsigned long gh_uniform_vector_length (SCM v);
SCM_API SCM gh_uniform_vector_ref (SCM v, SCM ilist);
#define gh_list_to_vector(ls) scm_vector(ls)
#define gh_vector_to_list(v) scm_vector_to_list(v)

SCM_API SCM gh_lookup (const char *sname);
SCM_API SCM gh_module_lookup (SCM module, const char *sname);

SCM_API SCM gh_cons(SCM x, SCM y);
#define gh_list scm_list_n
SCM_API unsigned long gh_length(SCM l);
SCM_API SCM gh_append(SCM args);
SCM_API SCM gh_append2(SCM l1, SCM l2);
SCM_API SCM gh_append3(SCM l1, SCM l2, SCM l3);
SCM_API SCM gh_append4(SCM l1, SCM l2, SCM l3, SCM l4);
#define gh_reverse(ls) scm_reverse(ls)
#define gh_list_tail(ls, k) scm_list_tail(ls, k)
#define gh_list_ref(ls, k) scm_list_ref(ls, k)
#define gh_memq(x, ls) scm_memq(x, ls)
#define gh_memv(x, ls) scm_memv(x, ls)
#define gh_member(x, ls) scm_member(x, ls)
#define gh_assq(x, alist) scm_assq(x, alist)
#define gh_assv(x, alist) scm_assv(x, alist)
#define gh_assoc(x, alist) scm_assoc(x, alist)

SCM_API SCM gh_car(SCM x);
SCM_API SCM gh_cdr(SCM x);

SCM_API SCM gh_caar(SCM x);
SCM_API SCM gh_cadr(SCM x);
SCM_API SCM gh_cdar(SCM x);
SCM_API SCM gh_cddr(SCM x);

SCM_API SCM gh_caaar(SCM x);
SCM_API SCM gh_caadr(SCM x);
SCM_API SCM gh_cadar(SCM x);
SCM_API SCM gh_caddr(SCM x);
SCM_API SCM gh_cdaar(SCM x);
SCM_API SCM gh_cdadr(SCM x);
SCM_API SCM gh_cddar(SCM x);
SCM_API SCM gh_cdddr(SCM x);

SCM_API SCM gh_set_car_x(SCM pair, SCM value);
SCM_API SCM gh_set_cdr_x(SCM pair, SCM value);

/* Calling Scheme functions from C.  */
SCM_API SCM gh_apply (SCM proc, SCM ls);
SCM_API SCM gh_call0 (SCM proc);
SCM_API SCM gh_call1 (SCM proc, SCM arg);
SCM_API SCM gh_call2 (SCM proc, SCM arg1, SCM arg2);
SCM_API SCM gh_call3 (SCM proc, SCM arg1, SCM arg2, SCM arg3);

/* reading and writing Scheme objects.  */
SCM_API void gh_display (SCM x);
SCM_API void gh_write (SCM x);
SCM_API void gh_newline (void);

/* void  gh_gc_mark(SCM)              : mark an SCM as in use. */
/* void  gh_defer_ints()              : don't interrupt code section. */
/* void  gh_allow_ints()              : see gh_defer_ints(). */
/* void  gh_new_cell(SCM, int tag)    : initialize SCM to be of type 'tag' */
/* int   gh_type_p(SCM, tag)          : test if SCM is of type 'tag' */
/* SCM   gh_intern(char*)             : get symbol corresponding to c-string.*/
/* void  gh_set_ext_data(SCM, void*)  : set extension data on SCM */
/* void *gh_get_ext_data(SCM)         : return extension data from SCM. */

/* void  gh_assert(int cond, char *msg, SCM obj); */

#ifdef __cplusplus
}
#endif

#endif

#endif /* __GH_H */

/*
  Local Variables:
  c-file-style: "gnu"
  End:
*/


code:
/* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2004, 2006 Free Software Foundation, Inc.
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

/* data initialization and C<->Scheme data conversion */

#ifdef HAVE_CONFIG_H
#  include <config.h>
#endif

#include "libguile/gh.h"
#ifdef HAVE_STRING_H
#include <string.h>
#endif

#include <assert.h>

#if SCM_ENABLE_DEPRECATED

/* data conversion C->scheme */

SCM
gh_bool2scm (int x)
{
  return scm_from_bool(x);
}
SCM
gh_int2scm (int x)
{
  return scm_from_long ((long) x);
}
SCM
gh_ulong2scm (unsigned long x)
{
  return scm_from_ulong (x);
}
SCM
gh_long2scm (long x)
{
  return scm_from_long (x);
}
SCM
gh_double2scm (double x)
{
  return scm_from_double (x);
}
SCM
gh_char2scm (char c)
{
 return SCM_MAKE_CHAR (c);
}
SCM
gh_str2scm (const char *s, size_t len)
{
  return scm_from_locale_stringn (s, len);
}
SCM
gh_str02scm (const char *s)
{
  return scm_from_locale_string (s);
}
/* Copy LEN characters at SRC into the *existing* Scheme string DST,
   starting at START.  START is an index into DST; zero means the
   beginning of the string.

   If START + LEN is off the end of DST, signal an out-of-range
   error.  */
void
gh_set_substr (const char *src, SCM dst, long start, size_t len)
{
  char *dst_ptr;
  size_t dst_len;

  SCM_ASSERT (scm_is_string (dst), dst, SCM_ARG3, "gh_set_substr");

  dst_len = scm_i_string_length (dst);
  SCM_ASSERT (start + len <= dst_len, dst, SCM_ARG4, "gh_set_substr");

  dst_ptr = scm_i_string_writable_chars (dst);
  memmove (dst_ptr + start, src, len);
  scm_i_string_stop_writing ();
  scm_remember_upto_here_1 (dst);
}

/* Return the symbol named SYMBOL_STR.  */
SCM
gh_symbol2scm (const char *symbol_str)
{
  return scm_from_locale_symbol(symbol_str);
}

SCM
gh_ints2scm (const int *d, long n)
{
  long i;
  SCM v = scm_c_make_vector (n, SCM_UNSPECIFIED);
  for (i = 0; i < n; ++i)
    SCM_SIMPLE_VECTOR_SET (v, i, scm_from_int (d[i]));

  return v;
}

SCM
gh_doubles2scm (const double *d, long n)
{
  long i;
  SCM v = scm_c_make_vector (n, SCM_UNSPECIFIED);

  for(i = 0; i < n; i++)
    SCM_SIMPLE_VECTOR_SET (v, i, scm_from_double (d[i]));
  return v;
}

SCM
gh_chars2byvect (const char *d, long n)
{
  char *m = scm_malloc (n);
  memcpy (m, d, n * sizeof (char));
  return scm_take_s8vector ((scm_t_int8 *)m, n);
}

SCM
gh_shorts2svect (const short *d, long n)
{
  char *m = scm_malloc (n * sizeof (short));
  memcpy (m, d, n * sizeof (short));
  assert (sizeof (scm_t_int16) == sizeof (short));
  return scm_take_s16vector ((scm_t_int16 *)m, n);
}

SCM
gh_longs2ivect (const long *d, long n)
{
  char *m = scm_malloc (n * sizeof (long));
  memcpy (m, d, n * sizeof (long));
  assert (sizeof (scm_t_int32) == sizeof (long));
  return scm_take_s32vector ((scm_t_int32 *)m, n);
}

SCM
gh_ulongs2uvect (const unsigned long *d, long n)
{
  char *m = scm_malloc (n * sizeof (unsigned long));
  memcpy (m, d, n * sizeof (unsigned long));
  assert (sizeof (scm_t_uint32) == sizeof (unsigned long));
  return scm_take_u32vector ((scm_t_uint32 *)m, n);
}

SCM
gh_floats2fvect (const float *d, long n)
{
  char *m = scm_malloc (n * sizeof (float));
  memcpy (m, d, n * sizeof (float));
  return scm_take_f32vector ((float *)m, n);
}

SCM
gh_doubles2dvect (const double *d, long n)
{
  char *m = scm_malloc (n * sizeof (double));
  memcpy (m, d, n * sizeof (double));
  return scm_take_f64vector ((double *)m, n);
}

/* data conversion scheme->C */
int
gh_scm2bool (SCM obj)
{
  return (scm_is_false (obj)) ? 0 : 1;
}
unsigned long
gh_scm2ulong (SCM obj)
{
  return scm_to_ulong (obj);
}
long
gh_scm2long (SCM obj)
{
  return scm_to_long (obj);
}
int
gh_scm2int (SCM obj)
{
  return scm_to_int (obj);
}
double
gh_scm2double (SCM obj)
{
  return scm_to_double (obj);
}
char
gh_scm2char (SCM obj)
#define FUNC_NAME "gh_scm2char"
{
  SCM_VALIDATE_CHAR (SCM_ARG1, obj);
  return SCM_CHAR (obj);
}
#undef FUNC_NAME

/* Convert a vector, weak vector, string, substring or uniform vector
   into an array of chars.  If result array in arg 2 is NULL, malloc a
   new one.  If out of memory, return NULL.  */
char *
gh_scm2chars (SCM obj, char *m)
{
  long i, n;
  long v;
  SCM val;
  if (SCM_IMP (obj))
    scm_wrong_type_arg (0, 0, obj);
  switch (SCM_TYP7 (obj))
    {
    case scm_tc7_vector:
    case scm_tc7_wvect:
      n = SCM_SIMPLE_VECTOR_LENGTH (obj);
      for (i = 0; i < n; ++i)
	{
	  val = SCM_SIMPLE_VECTOR_REF (obj, i);
	  if (SCM_I_INUMP (val))
	    {
	      v = SCM_I_INUM (val);
	      if (v < -128 || v > 255)
		scm_out_of_range (0, obj);
	    }
	  else
	    scm_wrong_type_arg (0, 0, obj);
	}
      if (m == 0)
	m = (char *) malloc (n * sizeof (char));
      if (m == NULL)
	return NULL;
      for (i = 0; i < n; ++i)
	m[i] = SCM_I_INUM (SCM_SIMPLE_VECTOR_REF (obj, i));
      break;
    case scm_tc7_smob:
      if (scm_is_true (scm_s8vector_p (obj)))
	{
	  scm_t_array_handle handle;
	  size_t len;
	  ssize_t inc;
	  const scm_t_int8 *elts;

	  elts = scm_s8vector_elements (obj, &handle, &len, &inc);
	  if (inc != 1)
	    scm_misc_error (NULL, "only contiguous vectors are supported: ~a",
			    scm_list_1 (obj));
	  if (m == 0)
	    m = (char *) malloc (len);
	  if (m != NULL)
	    memcpy (m, elts, len);
	  scm_array_handle_release (&handle);
	  if (m == NULL)
	    return NULL;
	  break;
	}
      else
	goto wrong_type;
    case scm_tc7_string:
      n = scm_i_string_length (obj);
      if (m == 0)
	m = (char *) malloc (n * sizeof (char));
      if (m == NULL)
	return NULL;
      memcpy (m, scm_i_string_chars (obj), n * sizeof (char));
      break;
    default:
    wrong_type:
      scm_wrong_type_arg (0, 0, obj);
    }
  return m;
}

static void *
scm2whatever (SCM obj, void *m, size_t size)
{
  scm_t_array_handle handle;
  size_t len;
  ssize_t inc;
  const void *elts;

  elts = scm_uniform_vector_elements (obj, &handle, &len, &inc);

  if (inc != 1)
    scm_misc_error (NULL, "only contiguous vectors can be converted: ~a",
		    scm_list_1 (obj));

  if (m == 0)
    m = malloc (len * sizeof (size));
  if (m != NULL)
    memcpy (m, elts, len * size);

  scm_array_handle_release (&handle);

  return m;
}

#define SCM2WHATEVER(obj,pred,utype,mtype)                   \
  if (scm_is_true (pred (obj)))                              \
    {                                                        \
      assert (sizeof (utype) == sizeof (mtype));             \
      return (mtype *)scm2whatever (obj, m, sizeof (utype)); \
    }

/* Convert a vector, weak vector or uniform vector into an array of
   shorts.  If result array in arg 2 is NULL, malloc a new one.  If
   out of memory, return NULL.  */
short *
gh_scm2shorts (SCM obj, short *m)
{
  long i, n;
  long v;
  SCM val;
  if (SCM_IMP (obj))
    scm_wrong_type_arg (0, 0, obj);

  SCM2WHATEVER (obj, scm_s16vector_p, scm_t_int16, short)

  switch (SCM_TYP7 (obj))
    {
    case scm_tc7_vector:
    case scm_tc7_wvect:
      n = SCM_SIMPLE_VECTOR_LENGTH (obj);
      for (i = 0; i < n; ++i)
	{
	  val = SCM_SIMPLE_VECTOR_REF (obj, i);
	  if (SCM_I_INUMP (val))
	    {
	      v = SCM_I_INUM (val);
	      if (v < -32768 || v > 65535)
		scm_out_of_range (0, obj);
	    }
	  else
	    scm_wrong_type_arg (0, 0, obj);
	}
      if (m == 0)
	m = (short *) malloc (n * sizeof (short));
      if (m == NULL)
	return NULL;
      for (i = 0; i < n; ++i)
	m[i] = SCM_I_INUM (SCM_SIMPLE_VECTOR_REF (obj, i));
      break;
    default:
      scm_wrong_type_arg (0, 0, obj);
    }
  return m;
}

/* Convert a vector, weak vector or uniform vector into an array of
   longs.  If result array in arg 2 is NULL, malloc a new one.  If out
   of memory, return NULL.  */
long *
gh_scm2longs (SCM obj, long *m)
{
  long i, n;
  SCM val;
  if (SCM_IMP (obj))
    scm_wrong_type_arg (0, 0, obj);

  SCM2WHATEVER (obj, scm_s32vector_p, scm_t_int32, long)

  switch (SCM_TYP7 (obj))
    {
    case scm_tc7_vector:
    case scm_tc7_wvect:
      n = SCM_SIMPLE_VECTOR_LENGTH (obj);
      for (i = 0; i < n; ++i)
	{
	  val = SCM_SIMPLE_VECTOR_REF (obj, i);
	  if (!SCM_I_INUMP (val) && !SCM_BIGP (val))
	    scm_wrong_type_arg (0, 0, obj);
	}
      if (m == 0)
	m = (long *) malloc (n * sizeof (long));
      if (m == NULL)
	return NULL;
      for (i = 0; i < n; ++i)
	{
	  val = SCM_SIMPLE_VECTOR_REF (obj, i);
	  m[i] = SCM_I_INUMP (val)
	    ? SCM_I_INUM (val)
	    : scm_to_long (val);
	}
      break;
    default:
      scm_wrong_type_arg (0, 0, obj);
    }
  return m;
}

/* Convert a vector, weak vector or uniform vector into an array of
   floats.  If result array in arg 2 is NULL, malloc a new one.  If
   out of memory, return NULL.  */
float *
gh_scm2floats (SCM obj, float *m)
{
  long i, n;
  SCM val;
  if (SCM_IMP (obj))
    scm_wrong_type_arg (0, 0, obj);

  /* XXX - f64vectors are rejected now.
   */
  SCM2WHATEVER (obj, scm_f32vector_p, float, float)

  switch (SCM_TYP7 (obj))
    {
    case scm_tc7_vector:
    case scm_tc7_wvect:
      n = SCM_SIMPLE_VECTOR_LENGTH (obj);
      for (i = 0; i < n; ++i)
	{
	  val = SCM_SIMPLE_VECTOR_REF (obj, i);
	  if (!SCM_I_INUMP (val)
	      && !(SCM_BIGP (val) || SCM_REALP (val)))
	    scm_wrong_type_arg (0, 0, val);
	}
      if (m == 0)
	m = (float *) malloc (n * sizeof (float));
      if (m == NULL)
	return NULL;
      for (i = 0; i < n; ++i)
	{
	  val = SCM_SIMPLE_VECTOR_REF (obj, i);
	  if (SCM_I_INUMP (val))
	    m[i] = SCM_I_INUM (val);
	  else if (SCM_BIGP (val))
	    m[i] = scm_to_long (val);
	  else
	    m[i] = SCM_REAL_VALUE (val);
	}
      break;
    default:
      scm_wrong_type_arg (0, 0, obj);
    }
  return m;
}

/* Convert a vector, weak vector or uniform vector into an array of
   doubles.  If result array in arg 2 is NULL, malloc a new one.  If
   out of memory, return NULL.  */
double *
gh_scm2doubles (SCM obj, double *m)
{
  long i, n;
  SCM val;
  if (SCM_IMP (obj))
    scm_wrong_type_arg (0, 0, obj);

  /* XXX - f32vectors are rejected now.
   */
  SCM2WHATEVER (obj, scm_f64vector_p, double, double)

  switch (SCM_TYP7 (obj))
    {
    case scm_tc7_vector:
    case scm_tc7_wvect:
      n = SCM_SIMPLE_VECTOR_LENGTH (obj);
      for (i = 0; i < n; ++i)
	{
	  val = SCM_SIMPLE_VECTOR_REF (obj, i);
	  if (!SCM_I_INUMP (val)
	      && !(SCM_BIGP (val) || SCM_REALP (val)))
	    scm_wrong_type_arg (0, 0, val);
	}
      if (m == 0)
	m = (double *) malloc (n * sizeof (double));
      if (m == NULL)
	return NULL;
      for (i = 0; i < n; ++i)
	{
	  val = SCM_SIMPLE_VECTOR_REF (obj, i);
	  if (SCM_I_INUMP (val))
	    m[i] = SCM_I_INUM (val);
	  else if (SCM_BIGP (val))
	    m[i] = scm_to_long (val);
	  else
	    m[i] = SCM_REAL_VALUE (val);
	}
      break;

    default:
      scm_wrong_type_arg (0, 0, obj);
    }
  return m;
}

/* string conversions between C and Scheme */

/* gh_scm2newstr() -- Given a Scheme string STR, return a pointer to a
   new copy of its contents, followed by a null byte.  If lenp is
   non-null, set *lenp to the string's length.

   This function uses malloc to obtain storage for the copy; the
   caller is responsible for freeing it.  If out of memory, NULL is
   returned.

   Note that Scheme strings may contain arbitrary data, including null
   characters.  This means that null termination is not a reliable way
   to determine the length of the returned value.  However, the
   function always copies the complete contents of STR, and sets
   *LEN_P to the true length of the string (when LEN_P is non-null).  */
char *
gh_scm2newstr (SCM str, size_t *lenp)
{
  char *ret_str;

  /* We can't use scm_to_locale_stringn directly since it does not
     guarantee null-termination when lenp is non-NULL.
   */

  ret_str = scm_to_locale_string (str);
  if (lenp)
    *lenp = scm_i_string_length (str);
  return ret_str;
}

/* Copy LEN characters at START from the Scheme string SRC to memory
   at DST.  START is an index into SRC; zero means the beginning of
   the string.  DST has already been allocated by the caller.

   If START + LEN is off the end of SRC, silently truncate the source
   region to fit the string.  If truncation occurs, the corresponding
   area of DST is left unchanged.  */
void
gh_get_substr (SCM src, char *dst, long start, size_t len)
{
  size_t src_len, effective_length;
  SCM_ASSERT (scm_is_string (src), src, SCM_ARG3, "gh_get_substr");

  src_len = scm_i_string_length (src);
  effective_length = (len < src_len) ? len : src_len;
  memcpy (dst + start, scm_i_string_chars (src), effective_length * sizeof (char));
  /* FIXME: must signal an error if len > src_len */
  scm_remember_upto_here_1 (src);
}

/* gh_scm2newsymbol() -- Given a Scheme symbol 'identifier, return a
   pointer to a string with the symbol characters "identifier",
   followed by a null byte.  If lenp is non-null, set *lenp to the
   string's length.

   This function uses malloc to obtain storage for the copy; the
   caller is responsible for freeing it.  If out of memory, NULL is
   returned.*/
char *
gh_symbol2newstr (SCM sym, size_t *lenp)
{
  return gh_scm2newstr (scm_symbol_to_string (sym), lenp);
}

/* create a new vector of the given length, all initialized to the
   given value */
SCM
gh_make_vector (SCM len, SCM fill)
{
  return scm_make_vector (len, fill);
}

/* set the given element of the given vector to the given value */
SCM
gh_vector_set_x (SCM vec, SCM pos, SCM val)
{
  return scm_vector_set_x (vec, pos, val);
}

/* retrieve the given element of the given vector */
SCM
gh_vector_ref (SCM vec, SCM pos)
{
  return scm_vector_ref (vec, pos);
}

/* returns the length of the given vector */
unsigned long
gh_vector_length (SCM v)
{
  return (unsigned long) scm_c_vector_length (v);
}

/* uniform vector support */

/* returns the length as a C unsigned long integer */
unsigned long
gh_uniform_vector_length (SCM v)
{
  return (unsigned long) scm_c_uniform_vector_length (v);
}

/* gets the given element from a uniform vector; ilist is a list (or
   possibly a single integer) of indices, and its length is the
   dimension of the uniform vector */
SCM
gh_uniform_vector_ref (SCM v, SCM ilist)
{
  return scm_uniform_vector_ref (v, ilist);
}

/* sets an individual element in a uniform vector */
/* SCM */
/* gh_list_to_uniform_array ( */

/* Data lookups between C and Scheme

   Look up a symbol with a given name, and return the object to which
   it is bound.  gh_lookup examines the Guile top level, and
   gh_module_lookup checks the module namespace specified by the
   `vec' argument.

   The return value is the Scheme object to which SNAME is bound, or
   SCM_UNDEFINED if SNAME is not bound in the given context.
 */

SCM
gh_lookup (const char *sname)
{
  return gh_module_lookup (scm_current_module (), sname);
}

SCM
gh_module_lookup (SCM module, const char *sname)
#define FUNC_NAME "gh_module_lookup"
{
  SCM sym, var;

  SCM_VALIDATE_MODULE (SCM_ARG1, module);

  sym = scm_from_locale_symbol (sname);
  var = scm_sym2var (sym, scm_module_lookup_closure (module), SCM_BOOL_F);
  if (var != SCM_BOOL_F)
    return SCM_VARIABLE_REF (var);
  else
    return SCM_UNDEFINED;
}
#undef FUNC_NAME

#endif /* SCM_ENABLE_DEPRECATED */

/*
  Local Variables:
  c-file-style: "gnu"
  End:
*/

license: unknown


code:
/*      Copyright (C) 1995,1996,1997,1998, 2000, 2001, 2006, 2008 Free Software Foundation, Inc.

 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

/* routines to evaluate Scheme code */

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

#include "libguile/gh.h"

#if SCM_ENABLE_DEPRECATED

typedef SCM (*gh_eval_t) (void *data, SCM jmpbuf);

/* Evaluate the string; toss the value.  */
SCM
gh_eval_str (const char *scheme_code)
{
  return scm_c_eval_string (scheme_code);
}

/* evaluate the file by passing it to the lower level scm_primitive_load() */
SCM
gh_eval_file (const char *fname)
{
  return scm_primitive_load (gh_str02scm (fname));
}

static SCM
eval_str_wrapper (void *data)
{
/*   gh_eval_t real_eval_proc = (gh_eval_t) (* ((gh_eval_t *) data)); */

  char *scheme_code = (char *) data;
  return gh_eval_str (scheme_code);
}

SCM
gh_eval_str_with_catch (const char *scheme_code, scm_t_catch_handler handler)
{
  /* FIXME: not there yet */
  return gh_catch (SCM_BOOL_T, (scm_t_catch_body) eval_str_wrapper, (void *) scheme_code,
		   (scm_t_catch_handler) handler, (void *) scheme_code);
}

SCM
gh_eval_str_with_standard_handler (const char *scheme_code)
{
  return gh_eval_str_with_catch (scheme_code, gh_standard_handler);
}

SCM
gh_eval_str_with_stack_saving_handler (const char *scheme_code)
{
  return scm_internal_stack_catch (SCM_BOOL_T,
				   (scm_t_catch_body) eval_str_wrapper,
				   (void *) scheme_code,
				   (scm_t_catch_handler)
				   gh_standard_handler,
				   (void *) scheme_code);
}

static SCM
eval_file_wrapper (void *data)
{
/*   gh_eval_t real_eval_proc = (gh_eval_t) (* ((gh_eval_t *) data)); */

  char *scheme_code = (char *) data;
  return gh_eval_file (scheme_code);
}

SCM
gh_eval_file_with_catch (const char *scheme_code, scm_t_catch_handler handler)
{
  /* FIXME: not there yet */
  return gh_catch (SCM_BOOL_T, (scm_t_catch_body) eval_file_wrapper,
		   (void *) scheme_code, (scm_t_catch_handler) handler,
		   (void *) scheme_code);
}

SCM
gh_eval_file_with_standard_handler (const char *scheme_code)
{
  return gh_eval_file_with_catch (scheme_code, gh_standard_handler);
}

#endif /* SCM_ENABLE_DEPRECATED */

/*
  Local Variables:
  c-file-style: "gnu"
  End:
*/


code:
/*      Copyright (C) 1995,1996,1997,1998, 2000, 2001, 2006, 2008 Free Software Foundation, Inc.

 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

/* Defining Scheme functions implemented by C functions --- subrs.  */

#include "libguile/gh.h"

#if SCM_ENABLE_DEPRECATED

/* allows you to define new scheme primitives written in C */
SCM
gh_new_procedure (const char *proc_name, SCM (*fn) (),
		  int n_required_args, int n_optional_args, int varp)
{
  return scm_c_define_gsubr (proc_name, n_required_args, n_optional_args,
			     varp, fn);
}

SCM
gh_new_procedure0_0 (const char *proc_name, SCM (*fn) ())
{
  return gh_new_procedure (proc_name, fn, 0, 0, 0);
}

SCM
gh_new_procedure0_1 (const char *proc_name, SCM (*fn) ())
{
  return gh_new_procedure (proc_name, fn, 0, 1, 0);
}

SCM
gh_new_procedure0_2 (const char *proc_name, SCM (*fn) ())
{
  return gh_new_procedure (proc_name, fn, 0, 2, 0);
}

SCM
gh_new_procedure1_0 (const char *proc_name, SCM (*fn) ())
{
  return gh_new_procedure (proc_name, fn, 1, 0, 0);
}

SCM
gh_new_procedure1_1 (const char *proc_name, SCM (*fn) ())
{
  return gh_new_procedure (proc_name, fn, 1, 1, 0);
}

SCM
gh_new_procedure1_2 (const char *proc_name, SCM (*fn) ())
{
  return gh_new_procedure (proc_name, fn, 1, 2, 0);
}

SCM
gh_new_procedure2_0 (const char *proc_name, SCM (*fn) ())
{
  return gh_new_procedure (proc_name, fn, 2, 0, 0);
}

SCM
gh_new_procedure2_1 (const char *proc_name, SCM (*fn) ())
{
  return gh_new_procedure (proc_name, fn, 2, 1, 0);
}

SCM
gh_new_procedure2_2 (const char *proc_name, SCM (*fn) ())
{
  return gh_new_procedure (proc_name, fn, 2, 2, 0);
}

SCM
gh_new_procedure3_0 (const char *proc_name, SCM (*fn) ())
{
  return gh_new_procedure (proc_name, fn, 3, 0, 0);
}

SCM
gh_new_procedure4_0 (const char *proc_name, SCM (*fn) ())
{
  return gh_new_procedure (proc_name, fn, 4, 0, 0);
}

SCM
gh_new_procedure5_0 (const char *proc_name, SCM (*fn) ())
{
  return gh_new_procedure (proc_name, fn, 5, 0, 0);
}

/* some (possibly most) Scheme functions available from C */
SCM
gh_define (const char *name, SCM val)
{
  scm_c_define (name, val);
  return SCM_UNSPECIFIED;
}

/* Calling Scheme functions from C.  */

SCM
gh_apply (SCM proc, SCM args)
{
  return scm_apply (proc, args, SCM_EOL);
}

SCM
gh_call0 (SCM proc)
{
  return scm_apply (proc, SCM_EOL, SCM_EOL);
}

SCM
gh_call1 (SCM proc, SCM arg)
{
  return scm_apply (proc, arg, scm_listofnull);
}

SCM
gh_call2 (SCM proc, SCM arg1, SCM arg2)
{
  return scm_apply (proc, arg1, scm_cons (arg2, scm_listofnull));
}

SCM
gh_call3 (SCM proc, SCM arg1, SCM arg2, SCM arg3)
{
  return scm_apply (proc, arg1, scm_cons2 (arg2, arg3, scm_listofnull));
}

#endif /* SCM_ENABLE_DEPRECATED */

/*
  Local Variables:
  c-file-style: "gnu"
  End:
*/


code:
/* Copyright (C) 1995,1996,1997,2000,2001, 2006, 2008 Free Software Foundation, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

/* Guile high level (gh_) interface, initialization-related stuff */

#include <stdio.h>

#include "libguile/gh.h"

#if SCM_ENABLE_DEPRECATED

typedef void (*main_prog_t) (int argc, char **argv);
typedef void (*repl_prog_t) (int argc, char **argv);

/* This function takes care of all real GH initialization.  Since it's
   called by scm_boot_guile, it can safely work with heap objects, or
   call functions that do so.  */
static void
gh_launch_pad (void *closure, int argc, char **argv)
{
  main_prog_t c_main_prog = (main_prog_t) closure;

  c_main_prog (argc, argv);
  exit (0);
}

/* starts up the Scheme interpreter, and stays in it.  c_main_prog()
   is the address of the user's main program, since gh_enter() never
   returns. */
void
gh_enter (int argc, char *argv[], main_prog_t c_main_prog)
{
  scm_boot_guile (argc, argv, gh_launch_pad, (void *) c_main_prog);
  /* never returns */
}

/* offer a REPL to the C programmer; for now I just invoke the ice-9
   REPL that is written in Scheme */
void
gh_repl (int argc, char *argv[])
{
/*   gh_eval_str ("(top-repl)"); */
  scm_shell (argc, argv);
}

/* libguile programmers need exception handling mechanisms; here is
   the recommended way of doing it with the gh_ interface */

/* gh_catch() -- set up an exception handler for a particular type of
   error (or any thrown error if tag is SCM_BOOL_T); see
   ../libguile/throw.c for the comments explaining scm_internal_catch */
SCM
gh_catch (SCM tag, scm_t_catch_body body, void *body_data,
	  scm_t_catch_handler handler, void *handler_data)
{
  return scm_internal_catch (tag, body, body_data, handler, handler_data);
}

SCM
gh_standard_handler (void *data SCM_UNUSED, SCM tag, SCM throw_args SCM_UNUSED)
{
  fprintf (stderr, "\nJust got an error; tag is\n        ");
  scm_display (tag, scm_current_output_port ());
  scm_newline (scm_current_output_port ());
  scm_newline (scm_current_output_port ());

  return SCM_BOOL_F;
}

#endif /* SCM_ENABLE_DEPRECATED */

/*
  Local Variables:
  c-file-style: "gnu"
  End:
*/


code:
/*      Copyright (C) 1995,1996,1997, 2000, 2001, 2006, 2008 Free Software Foundation, Inc.

 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

#include "libguile/gh.h"

#if SCM_ENABLE_DEPRECATED

void
gh_display (SCM x)
{
  scm_display (x, scm_current_output_port ());
}

void
gh_write (SCM x)
{
  scm_write (x, scm_current_output_port ());
}

void
gh_newline ()
{
  scm_newline (scm_current_output_port ());
}

#endif /* SCM_ENABLE_DEPRECATED */

/*
  Local Variables:
  c-file-style: "gnu"
  End:
*/


code:
/*      Copyright (C) 1995,1996,1997, 2000, 2001, 2004, 2006, 2008 Free Software Foundation, Inc.

 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

/* list manipulation */

#include "libguile/gh.h"

#if SCM_ENABLE_DEPRECATED

/* returns the length of a list */
unsigned long
gh_length (SCM l)
{
  return gh_scm2ulong (scm_length (l));
}

/* list operations */

/* gh_list(SCM elt, ...) is implemented as a macro in gh.h. */

/* gh_append() takes a args, which is a list of lists, and appends
   them all together into a single list, which is returned.  This is
   equivalent to the Scheme procedure (append list1 list2 ...) */
SCM
gh_append (SCM args)
{
  return scm_append (args);
}

SCM
gh_append2 (SCM l1, SCM l2)
{
  return scm_append (scm_list_2 (l1, l2));
}

SCM
gh_append3(SCM l1, SCM l2, SCM l3)
{
  return scm_append (scm_list_3 (l1, l2, l3));
}

SCM
gh_append4 (SCM l1, SCM l2, SCM l3, SCM l4)
{
  return scm_append (scm_list_4 (l1, l2, l3, l4));
}

/* gh_reverse() is defined as a macro in gh.h */
/* gh_list_tail() is defined as a macro in gh.h */
/* gh_list_ref() is defined as a macro in gh.h */
/* gh_memq() is defined as a macro in gh.h */
/* gh_memv() is defined as a macro in gh.h */
/* gh_member() is defined as a macro in gh.h */
/* gh_assq() is defined as a macro in gh.h */
/* gh_assv() is defined as a macro in gh.h */
/* gh_assoc() is defined as a macro in gh.h */

/* analogous to the Scheme cons operator */
SCM
gh_cons (SCM x, SCM y)
{
  return scm_cons (x, y);
}

/* analogous to the Scheme car operator */
SCM
gh_car (SCM x)
{
  return scm_car (x);
}

/* analogous to the Scheme cdr operator */
SCM
gh_cdr (SCM x)
{
  return scm_cdr (x);
}

/* now for the multiple car/cdr utility procedures */
SCM
gh_caar (SCM x)
{
  return scm_caar (x);
}
SCM
gh_cadr (SCM x)
{
  return scm_cadr (x);
}
SCM
gh_cdar (SCM x)
{
  return scm_cdar (x);
}
SCM
gh_cddr (SCM x)
{
  return scm_cddr (x);
}

SCM
gh_caaar (SCM x)
{
  return scm_caaar (x);
}
SCM
gh_caadr (SCM x)
{
  return scm_caadr (x);
}
SCM
gh_cadar (SCM x)
{
  return scm_cadar (x);
}
SCM
gh_caddr (SCM x)
{
  return scm_caddr (x);
}
SCM
gh_cdaar (SCM x)
{
  return scm_cdaar (x);
}
SCM
gh_cdadr (SCM x)
{
  return scm_cdadr (x);
}
SCM
gh_cddar (SCM x)
{
  return scm_cddar (x);
}
SCM
gh_cdddr (SCM x)
{
  return scm_cdddr (x);
}

/* equivalent to (set-car! pair value) */
SCM
gh_set_car_x(SCM pair, SCM value)
{
  return scm_set_car_x(pair, value);
}

/* equivalent to (set-cdr! pair value) */
SCM
gh_set_cdr_x(SCM pair, SCM value)
{
  return scm_set_cdr_x(pair, value);
}

#endif /* SCM_ENABLE_DEPRECATED */

/*
  Local Variables:
  c-file-style: "gnu"
  End:
*/


code:
/*      Copyright (C) 1995,1996,1997, 2000, 2001, 2006, 2008 Free Software Foundation, Inc.

 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

/* type predicates and equality predicates */

#include "libguile/gh.h"

#if SCM_ENABLE_DEPRECATED

/* type predicates: tell you if an SCM object has a given type */
int
gh_boolean_p (SCM val)
{
  return (scm_is_true (scm_boolean_p (val)));
}
int
gh_symbol_p (SCM val)
{
  return (scm_is_true (scm_symbol_p (val)));
}
int
gh_char_p (SCM val)
{
  return (scm_is_true (scm_char_p (val)));
}
int
gh_vector_p (SCM val)
{
  return (scm_is_true (scm_vector_p (val)));
}
int
gh_pair_p (SCM val)
{
  return (scm_is_true (scm_pair_p (val)));
}
int
gh_number_p (SCM val)
{
  return (scm_is_true (scm_number_p (val)));
}
int
gh_string_p (SCM val)
{
  return (scm_is_true (scm_string_p (val)));
}
int
gh_procedure_p (SCM val)
{
  return (scm_is_true (scm_procedure_p (val)));
}
int
gh_list_p (SCM val)
{
  return (scm_is_true (scm_list_p (val)));
}
int
gh_inexact_p (SCM val)
{
  return (scm_is_true (scm_inexact_p (val)));
}
int
gh_exact_p (SCM val)
{
  return (scm_is_true (scm_exact_p (val)));
}

/* the three types of equality */
int
gh_eq_p (SCM x, SCM y)
{
  return (scm_is_true (scm_eq_p (x, y)));
}
int
gh_eqv_p (SCM x, SCM y)
{
  return (scm_is_true (scm_eqv_p (x, y)));
}
int
gh_equal_p (SCM x, SCM y)
{
  return (scm_is_true (scm_equal_p (x, y)));
}

/* equivalent to (string=? ...), but returns 0 or 1 rather than Scheme
   booleans */
int
gh_string_equal_p(SCM s1, SCM s2)
{
  return (scm_is_true (scm_string_equal_p(s1, s2)));
}

/* equivalent to (null? ...), but returns 0 or 1 rather than Scheme
   booleans */
int
gh_null_p(SCM l)
{
  return (scm_is_true(scm_null_p(l)));
}

#endif /* SCM_ENABLE_DEPRECATED */

/*
  Local Variables:
  c-file-style: "gnu"
  End:
*/