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authorJim Blandy <jimb@red-bean.com>1997-04-14 06:42:27 +0000
committerJim Blandy <jimb@red-bean.com>1997-04-14 06:42:27 +0000
commitee2a8b9bdd1d548e5530f4f132aa436167154a00 (patch)
tree752b54578b9f14e466cc3e8c712e47b4bf4a9c78 /libguile/gh_test_repl.c
parentf4d7dfb69da543557bfca4b63e992868e0e37110 (diff)
downloadguile-ee2a8b9bdd1d548e5530f4f132aa436167154a00.tar.gz
* gh_init.c (gh_standard_handler): Return SCM_BOOL_F, not garbage.
Merge GH interface library into libguile. * gh.h, gh_data.c, gh_eval.c, gh_funcs.c, gh_init.c, gh_io.c, gh_list.c, gh_predicates.c, gh_test_c, gh_test_c.c, gh_test_repl, gh_test_repl.c: New files. * Makefile.am (libguile_la_SOURCES): Add gh_data.c, gh_eval.c, gh_funcs.c, gh_init.c, gh_io.c, gh_list.c, gh_predicates.c. Move _scm.h to ... (EXTRA_libguile_la_SOURCES): ... here. (pkginclude_HEADERS): Add variable, to get gh.h installed. (THREAD_LIBS, check_ldadd, check_PROGRAMS, gh_test_c_SOURCES, gh_test_c_LDADD, gh_test_repl_SOURCES, gh_test_repl_LDADD): New variables, describing how to build the gh test programs. * configure.in: Check for -lm, -lsocket, -lnsl; we need this to build the test programs, and we probably should have been linking libguile.la against them all along, to support AIX shared libs. Add cflags for threads to CFLAGS; add libs for threads to new variable THREAD_LIBS, used in Makefile.am. * ChangeLog-gh: log from old `gh' subdirectory. * Makefile.in, configure, scmconfig.h.in: Rebuilt.
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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.
+ */
+
+
+/* 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 <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_repl ();
+}
+
+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 ("requested length for vector: %ld\n", c_length);
+
+ /* create a vector filled witth 0.0 entries */
+ xvec = gh_vector (c_length, gh_double2scm (0.0));
+ /* set the second element in it to some floating point value */
+ gh_vset (xvec, 2, gh_double2scm (1.9));
+
+ return xvec;
+}