Add M_QUAD internal macros

m-core.h

@@ -1158,6 +1158,12 @@ M_BEGIN_PROTECTED_CODE
 #define M_TRIPLE_2(a,b,c) b
 #define M_TRIPLE_3(a,b,c) c
 
+/* Same for quad */
+#define M_QUAD_1(a,b,c,d) a
+#define M_QUAD_2(a,b,c,d) b
+#define M_QUAD_3(a,b,c,d) c
+#define M_QUAD_4(a,b,c,d) d
+
 /* Skip the Nth first arguments of a VA_ARGS
    Generated by:
    for i in $(seq 0 52) ; do printf "#define M_SKIPI_%d(" $i ; for j in $(seq 1 $i) ; do printf "_%d, " $j ; done ; printf "...) __VA_ARGS__\n"; done