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maintainer changed: was lord, now jimb; first import

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Jim Blandy 1996-07-25 22:56:11 +00:00
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libguile/procs.c Normal file
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/* Copyright (C) 1995,1996 Free Software Foundation, Inc.
*
* This program 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.
*
* This program 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 this software; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
* As a special exception, the Free Software Foundation gives permission
* for additional uses of the text contained in its release of GUILE.
*
* The exception is that, if you link the GUILE library with other files
* to produce an executable, this does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* Your use of that executable is in no way restricted on account of
* linking the GUILE library code into it.
*
* This exception does not however invalidate any other reasons why
* the executable file might be covered by the GNU General Public License.
*
* This exception applies only to the code released by the
* Free Software Foundation under the name GUILE. If you copy
* code from other Free Software Foundation releases into a copy of
* GUILE, as the General Public License permits, the exception does
* not apply to the code that you add in this way. To avoid misleading
* anyone as to the status of such modified files, you must delete
* this exception notice from them.
*
* If you write modifications of your own for GUILE, it is your choice
* whether to permit this exception to apply to your modifications.
* If you do not wish that, delete this exception notice.
*/
#include <stdio.h>
#include "_scm.h"
/* {Procedures}
*/
#ifdef __STDC__
SCM
scm_make_subr_opt (char *name, int type, SCM (*fcn) (), int set)
#else
SCM
scm_make_subr_opt (name, type, fcn, set)
char *name;
int type;
SCM (*fcn) ();
int set;
#endif
{
SCM symcell;
long tmp;
register SCM z;
symcell = scm_sysintern (name, SCM_UNDEFINED);
tmp = ((((SCM_CELLPTR) (SCM_CAR (symcell))) - scm_heap_org) << 8);
if ((tmp >> 8) != ((SCM_CELLPTR) (SCM_CAR (symcell)) - scm_heap_org))
tmp = 0;
SCM_NEWCELL (z);
SCM_SUBRF (z) = fcn;
SCM_CAR (z) = tmp + type;
if (set)
SCM_CDR (symcell) = z;
return z;
}
#ifdef __STDC__
SCM
scm_make_subr (char *name, int type, SCM (*fcn) ())
#else
SCM
scm_make_subr (name, type, fcn)
char *name;
int type;
SCM (*fcn) ();
#endif
{
return scm_make_subr_opt (name, type, fcn, 1);
}
#ifdef CCLO
#ifdef __STDC__
SCM
scm_makcclo (SCM proc, long len)
#else
SCM
scm_makcclo (proc, len)
SCM proc;
long len;
#endif
{
SCM s;
SCM_NEWCELL (s);
SCM_DEFER_INTS;
SCM_SETCHARS (s, scm_must_malloc (len * sizeof (SCM), "compiled-closure"));
SCM_SETLENGTH (s, len, scm_tc7_cclo);
while (--len)
SCM_VELTS (s)[len] = SCM_UNSPECIFIED;
SCM_CCLO_SUBR (s) = proc;
SCM_ALLOW_INTS;
return s;
}
#endif
SCM_PROC(s_procedure_p, "procedure?", 1, 0, 0, scm_procedure_p);
#ifdef __STDC__
SCM
scm_procedure_p (SCM obj)
#else
SCM
scm_procedure_p (obj)
SCM obj;
#endif
{
if (SCM_NIMP (obj))
switch (SCM_TYP7 (obj))
{
case scm_tcs_closures:
case scm_tc7_contin:
case scm_tcs_subrs:
#ifdef CCLO
case scm_tc7_cclo:
#endif
return SCM_BOOL_T;
default:
return SCM_BOOL_F;
}
return SCM_BOOL_F;
}
#ifdef __STDC__
void
scm_init_iprocs(scm_iproc *subra, int type)
#else
void
scm_init_iprocs(subra, type)
scm_iproc *subra;
int type;
#endif
{
for(;subra->scm_string; subra++)
scm_make_subr(subra->scm_string,
type,
subra->cproc);
}
#ifdef __STDC__
void
scm_init_procs (void)
#else
void
scm_init_procs ()
#endif
{
#include "procs.x"
}