From d07b31dd5a01c3fbcd551e2bcd3262eb0f601762 Mon Sep 17 00:00:00 2001
From: Giles Atkinson <“gatk555@gmail.com”>
Date: Thu, 7 May 2026 18:36:54 +0100
Subject: [PATCH] Add CPP macros to allow XSPICE macros to be used in local
 functions.

---
 src/include/ngspice/cm.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/include/ngspice/cm.h b/src/include/ngspice/cm.h
index 1f3854e3a..59a0b60bd 100644
--- a/src/include/ngspice/cm.h
+++ b/src/include/ngspice/cm.h
@@ -79,6 +79,14 @@ NON-STANDARD FEATURES
 #endif
 #endif
 
+/* Define the type and standard name of the single argument to code-model
+ * functions as macros.  These may be used to enable the use XSPICE macros
+ * in other functions of the code model.
+ */
+
+#define XSPICE_ARG_TYPE Mif_Private_t *
+#define XSPICE_ARG      mif_private
+
 /*
  * type safe variants of the <ctype.h> functions for char arguments
  */