* list.h (SCM_LISTn): New macros. Make list creation in C code

[bpt/guile.git] / libguile / gh_list.c

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\f

/* list manipulation */

#include <stdio.h>

#include <gh.h>

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

/* list operations */

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

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

/* 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);
}