for (i = 0; i < 4; i++) mat[i][i] = 1.0; \
}
-#else !defined( USE_MEM ) || !defined( WIN32 )
+#else // !defined( USE_MEM ) || !defined( WIN32 )
#define MAT3copy( to, from) bcopy(from, to, sizeof(MAT3mat))
#define MAT3zero(mat) bzero (mat, sizeof(MAT3mat))