diff --git a/ChangeLog b/ChangeLog
index a1f1a5082..f016b8aef 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2010-06-26  Robert Larice
+ * src/include/inpptree.h,
+ * src/spicelib/parser/ifeval.c,
+ * src/spicelib/parser/inpptree.c :
+	 avoid function pointer warnings
+
 2010-06-25  Robert Larice
  * src/frontend/com_hardcopy.c,
  * src/maths/sparse/spbuild.c,
diff --git a/src/include/inpptree.h b/src/include/inpptree.h
index 769d15855..a02d01a88 100644
--- a/src/include/inpptree.h
+++ b/src/include/inpptree.h
@@ -50,10 +50,22 @@ typedef struct INPparseNode {
     int valueIndex;         /* If INP_VAR, index into vars array. */
     char *funcname;         /* If INP_FUNCTION, name of function, */
     int funcnum;            /* ... one of PTF_*, */
-    double (*function)();       /* ... and pointer to the function. */
+    void *function;         /* ... and pointer to the function. */
     void *data;                 /* private data for certain functions, currently PTF_PWL */
 } INPparseNode;
 
+
+/* FIXME, less public
+ *   and replace with static inline functions for better type check
+ */
+
+#define PTunary(node_ptr) \
+    ((double(*)(double)) (node_ptr))
+#define PTbinary(node_ptr) \
+    ((double(*)(double, double)) (node_ptr))
+#define PTunary_with_private(node_ptr) \
+    ((double(*)(double, void*)) (node_ptr))
+
 /* These are the possible types of nodes we can have in the parse tree.  The
  * numbers for the ops 1 - 5 have to be the same as the token numbers,
  * below.
diff --git a/src/spicelib/parser/ifeval.c b/src/spicelib/parser/ifeval.c
index 85869dc0b..22ef69be4 100644
--- a/src/spicelib/parser/ifeval.c
+++ b/src/spicelib/parser/ifeval.c
@@ -83,7 +83,7 @@ PTeval(INPparseNode * tree, double gmin, double *res, double *vals)
             err = PTeval(tree->left->right, gmin, &r2, vals);
             if (err != OK)
                 return (err);
-            *res = (*tree->function) (r1, r2);
+            *res = PTbinary(tree -> function) (r1, r2);
             if (*res == HUGE) {
                 fprintf(stderr, "Error: %g, %g out of range for %s\n",
                 r1, r2, tree->funcname);
@@ -96,9 +96,9 @@ PTeval(INPparseNode * tree, double gmin, double *res, double *vals)
             if (err != OK)
                 return (err);
             if(tree->data == NULL)
-                *res = (*tree->function) (r1);
+                *res = PTunary(tree -> function) (r1);
             else
-                *res = (*tree->function) (r1, tree->data);
+                *res = PTunary_with_private(tree -> function) (r1, tree->data);
             if (*res == HUGE) {
                 fprintf(stderr, "Error: %g out of range for %s\n",
                 r1, tree->funcname);
@@ -138,7 +138,7 @@ PTeval(INPparseNode * tree, double gmin, double *res, double *vals)
 	err = PTeval(tree->right, gmin, &r2, vals);
 	if (err != OK)
 	    return (err);
-	*res = (*tree->function) (r1, r2);
+	*res = PTbinary(tree -> function) (r1, r2);
 	if (*res == HUGE) {
 	    fprintf(stderr, "Error: %g, %g out of range for %s\n",
 		    r1, r2, tree->funcname);
diff --git a/src/spicelib/parser/inpptree.c b/src/spicelib/parser/inpptree.c
index bd34b8f2f..0585da414 100644
--- a/src/spicelib/parser/inpptree.c
+++ b/src/spicelib/parser/inpptree.c
@@ -42,7 +42,7 @@ extern IFsimulator *ft_sim;	/* XXX */
 static struct op {
     int number;
     char *name;
-    double (*funcptr) ();
+    void *funcptr;
 } ops[] = {
     {
     PT_COMMA, ",", NULL}, {
@@ -58,7 +58,7 @@ static struct op {
 static struct func {
     char *name;
     int number;
-    double (*funcptr) ();
+    void *funcptr;
 } funcs[] = {
     { "abs",    PTF_ABS,    PTabs } ,
     { "acos",   PTF_ACOS,   PTacos } ,
@@ -665,7 +665,7 @@ static INPparseNode *mkf(int type, INPparseNode * arg)
     }
 
     if (arg->type == PT_CONSTANT) {
-	constval = ((*funcs[i].funcptr) (arg->constant));
+	constval = PTunary(funcs[i].funcptr) (arg->constant);
 	return (mkcon(constval));
     }