Index: trunk/src/libcschem/csch_printf.c
===================================================================
--- trunk/src/libcschem/csch_printf.c	(revision 6361)
+++ trunk/src/libcschem/csch_printf.c	(revision 6362)
@@ -28,15 +28,26 @@
 
 #include <librnd/core/unit.h>
 #include <librnd/core/rnd_printf.h>
+#include <librnd/core/error.h>
 
 #include "csch_printf.h"
 
-int csch_printf_app_format(gds_t *string, gds_t *spec, const char **fmt, rnd_unit_allow_t mask, rnd_unit_suffix_t suffix, va_list args)
+rnd_aft_ret_t RND_AFT_csch_coord = RND_AFT_error;
+
+rnd_aft_ret_t csch_printf_app_format(gds_t *string, gds_t *spec, const char **fmt, rnd_unit_allow_t mask, rnd_unit_suffix_t suffix, va_list args)
 {
-	int res = 0;
 	csch_coord_t c;
 	rnd_coord_t rc;
 
+	if (RND_AFT_csch_coord == RND_AFT_error) {
+		if (sizeof(int)== sizeof(csch_coord_t))
+			RND_AFT_csch_coord = RND_AFT_INT;
+		else if (sizeof(long) == sizeof(csch_coord_t))
+			RND_AFT_csch_coord = RND_AFT_LONG;
+		else
+			rnd_message(RND_MSG_ERROR, "Can't find matching integer type for sizeof(csch_coord_t)\n");
+	}
+
 	switch(**fmt) {
 		case 'r':
 			rc = va_arg(args, rnd_coord_t);
@@ -58,9 +69,9 @@
 				gds_append_str(spec, "ld");
 
 			if (rnd_append_printf(string, spec->array, (long)c) < 0)
-				res = -1;
+				return RND_AFT_error;
 
-			return res;
+			return RND_AFT_csch_coord;
 	}
-	return -1;
+	return RND_AFT_error;
 }
Index: trunk/src/libcschem/csch_printf.h
===================================================================
--- trunk/src/libcschem/csch_printf.h	(revision 6361)
+++ trunk/src/libcschem/csch_printf.h	(revision 6362)
@@ -7,4 +7,4 @@
     %$$rc   prints csch_coord_t; same as %$rc but no space between num and unit
     %rr     prints rnd_coord_t; same as %rc but scales down the value by 2^10 first
 */
-int csch_printf_app_format(gds_t *string, gds_t *spec, const char **fmt, rnd_unit_allow_t mask, rnd_unit_suffix_t suffix, va_list args);
+rnd_aft_ret_t csch_printf_app_format(gds_t *string, gds_t *spec, const char **fmt, rnd_unit_allow_t mask, rnd_unit_suffix_t suffix, va_list args);