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Diffstat (limited to 'libguile/gh_test_repl.c')
-rw-r--r-- | libguile/gh_test_repl.c | 171 |
1 files changed, 0 insertions, 171 deletions
diff --git a/libguile/gh_test_repl.c b/libguile/gh_test_repl.c index 670d33511..e69de29bb 100644 --- a/libguile/gh_test_repl.c +++ b/libguile/gh_test_repl.c @@ -1,171 +0,0 @@ -/* Copyright (C) 1995,1996,1997 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, Inc., 59 Temple Place, Suite 330, - * Boston, MA 02111-1307 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. */ - - -/* gh_test_repl -- a program that demonstrates starting Guile, adding - some privmitive procedures and entering a REPL form C */ - -#include <stdio.h> -#include <math.h> - -#include "libguile/gh.h" - -SCM c_factorial (SCM s_n); -SCM c_sin (SCM s_x); -SCM c_vector_test (SCM s_length); - -/* the gh_enter() routine, the standard entryp point for the gh_ - interface, makes you use a separate main function */ -void -main_prog (int argc, char *argv[]) -{ - SCM cf; - - gh_eval_str ("(display \"hello guile\n\")"); - - gh_eval_str ("(define (square x) (* x x))"); - gh_eval_str ("(define (fact n) (if (= n 1) 1 (* n (fact (- n 1)))))"); - - gh_eval_str ("(display (square 9)) (newline)"); - gh_eval_str ("(display (fact 100)) (newline)"); - - gh_eval_str ("(define s \"A string\")"); - gh_eval_str ("(define p '(A . pair))"); - gh_eval_str ("(display s)"); - gh_eval_str ("(display p)"); - gh_eval_str ("(display (string? s))"); - gh_eval_str ("(display (pair? s))"); - - /* now define some new primitives in C */ - cf = gh_new_procedure1_0 ("c-factorial", c_factorial); - gh_new_procedure1_0 ("c-sin", c_sin); - gh_new_procedure1_0 ("c-vector-test", c_vector_test); - - /* now try some (eval ...) action from C */ - { - SCM l = SCM_EOL; - l = gh_cons (gh_str02scm ("hello world"), l); - l = gh_cons (gh_symbol2scm ("'display"), l); - gh_display (l); - } - - { - SCM a_string; - a_string = gh_str02scm ("A string"); - - printf ("testing the predicates for pair? and string?\n"); - printf ("gh_pair_p(a_string) is %d, gh_string_p(a_string) is %d\n", - gh_pair_p (a_string), gh_string_p (a_string)); - } - - printf ("testing the predicates for procedure? and vector?\n"); - printf ("gh_procedure_p(c_factorial) is %d, gh_vector_p(c_factorial) is %d\n", - gh_procedure_p (cf), gh_vector_p (cf)); - gh_eval_str("(c-vector-test 200)"); - - gh_repl (argc, argv); -} - -int -main (int argc, char *argv[]) -{ - gh_enter (argc, argv, main_prog); - return 0; -} - -SCM -c_factorial (SCM s_n) -{ - int i, n; - unsigned long result = 1; - - n = gh_scm2ulong (s_n); - - for (i = 1; i <= n; ++i) - { - result = result * i; - } - return gh_ulong2scm (result); -} - -/* a sin routine in C, callable from scheme. it is named c_sin() to - distinguish it from the default scheme sin function */ -SCM -c_sin (SCM s_x) -{ - double x = gh_scm2double (s_x); - - return gh_double2scm (sin (x)); -} - -/* play around with vectors in guile: this routine creates a vector of - the given length, initializes it all to zero except element 2 which - is set to 1.9. */ -SCM -c_vector_test (SCM s_length) -{ - SCM xvec; - unsigned long c_length; - - c_length = gh_scm2ulong (s_length); - printf ("VECTOR test -- requested length for vector: %ld", c_length); - - /* create a vector filled witth 0.0 entries */ - xvec = gh_make_vector (s_length, gh_double2scm (0.0)); - /* set the second element in it to some floating point value */ - gh_vector_set_x (xvec, gh_int2scm(2), gh_double2scm (1.9)); - - /* I think I can use == because Scheme's doubles should be the same - as C doubles, with no operations in between */ - if (gh_scm2double(gh_vector_ref (xvec, gh_int2scm(2))) == 1.9) { - printf("... PASS\n"); - } else { - printf("... FAIL\n"); - } - - return xvec; -} - -/* - Local Variables: - c-file-style: "gnu" - End: -*/ |