4 files changed, 107 insertions, 0 deletions
diff --git a/Examples/octave/pointer/Makefile b/Examples/octave/pointer/Makefile
new file mode 100644
index 0000000..627b0a9
--- /dev/null
+++ b/Examples/octave/pointer/Makefile
@@ -0,0 +1,19 @@
+TOP        = ../..
+SWIG       = $(TOP)/../preinst-swig
+SRCS       = example.c
+TARGET     = example
+INTERFACE  = example.i
+
+all::
+	$(MAKE) -f $(TOP)/Makefile SRCS='$(SRCS)' SWIG='$(SWIG)' \
+	TARGET='$(TARGET)' INTERFACE='$(INTERFACE)' octave
+
+static::
+	$(MAKE) -f $(TOP)/Makefile SRCS='$(SRCS)' SWIG='$(SWIG)' \
+	TARGET='myoctave' INTERFACE='$(INTERFACE)' octave_static
+
+clean::
+	$(MAKE) -f $(TOP)/Makefile octave_clean
+	rm -f $(TARGET).py
+
+check: all
diff --git a/Examples/octave/pointer/example.c b/Examples/octave/pointer/example.c
new file mode 100644
index 0000000..b877d9a
--- /dev/null
+++ b/Examples/octave/pointer/example.c
@@ -0,0 +1,16 @@
+/* File : example.c */
+
+void add(int *x, int *y, int *result) {
+  *result = *x + *y;
+}
+
+void sub(int *x, int *y, int *result) {
+  *result = *x - *y;
+}
+
+int divide(int n, int d, int *r) {
+   int q;
+   q = n/d;
+   *r = n - q*d;
+   return q;
+}
diff --git a/Examples/octave/pointer/example.i b/Examples/octave/pointer/example.i
new file mode 100644
index 0000000..a8ac794
--- /dev/null
+++ b/Examples/octave/pointer/example.i
@@ -0,0 +1,30 @@
+/* File : example.i */
+%module example
+
+%{
+extern void add(int *, int *, int *);
+extern void sub(int *, int *, int *);
+extern int divide(int, int, int *);
+%}
+
+/* This example illustrates a couple of different techniques
+   for manipulating C pointers */
+
+/* First we'll use the pointer library */
+extern void add(int *x, int *y, int *result);
+%include cpointer.i
+%pointer_functions(int, intp);
+
+/* Next we'll use some typemaps */
+
+%include typemaps.i
+extern void sub(int *INPUT, int *INPUT, int *OUTPUT);
+
+/* Next we'll use typemaps and the %apply directive */
+
+%apply int *OUTPUT { int *r };
+extern int divide(int n, int d, int *r);
+
+
+
+
diff --git a/Examples/octave/pointer/runme.m b/Examples/octave/pointer/runme.m
new file mode 100644
index 0000000..c36df72
--- /dev/null
+++ b/Examples/octave/pointer/runme.m
@@ -0,0 +1,42 @@
+# file: runme.m
+
+example;
+
+# First create some objects using the pointer library.
+printf("Testing the pointer library\n");
+a = example.new_intp();
+b = example.new_intp();
+c = example.new_intp();
+example.intp_assign(a,37);
+example.intp_assign(b,42);
+
+a,b,c
+
+# Call the add() function with some pointers
+example.add(a,b,c);
+
+# Now get the result
+r = example.intp_value(c);
+printf("     37 + 42 = %i\n",r);
+
+# Clean up the pointers
+example.delete_intp(a);
+example.delete_intp(b);
+example.delete_intp(c);
+
+# Now try the typemap library
+# This should be much easier. Now how it is no longer
+# necessary to manufacture pointers.
+
+printf("Trying the typemap library\n");
+r = example.sub(37,42);
+printf("     37 - 42 = %i\n",r);
+
+# Now try the version with multiple return values
+
+printf("Testing multiple return values\n");
+[q,r] = example.divide(42,37);
+printf("     42/37 = %d remainder %d\n",q,r);
+
+
+