CDEF operators SHIFT, SQRT, SORT, and REV (reverse). See documentation for what

[rrdtool.git] / src / rrd_rpncalc.h

diff --git a/src/rrd_rpncalc.h b/src/rrd_rpncalc.h
index 915c949..9fd547a 100644 (file)
--- a/src/rrd_rpncalc.h
+++ b/src/rrd_rpncalc.h
@@ -3,17 +3,20 @@
  ****************************************************************************
  * rrd_rpncalc.h  RPN calculator functions
  ****************************************************************************/
+#ifndef _RRD_RPNCALC_H
+#define _RRD_RPNCALC_H
 
-/* WARNING: if new operators are added, they MUST be added after OP_END.
+/* WARNING: if new operators are added, they MUST be added at the very end of the list.
  * This is because COMPUTE (CDEF) DS store OP nodes by number (name is not
  * an option due to limited par array size). OP nodes must have the same
  * numeric values, otherwise the stored numbers will mean something different. */
-enum op_en {OP_NUMBER=0,OP_VARIABLE,OP_INF,OP_PREV,OP_PREV_OTHER,OP_NEGINF,
+enum op_en {OP_NUMBER=0,OP_VARIABLE,OP_INF,OP_PREV,OP_NEGINF,
            OP_UNKN,OP_NOW,OP_TIME,OP_ADD,OP_MOD,OP_SUB,OP_MUL,
            OP_DIV,OP_SIN, OP_DUP, OP_EXC, OP_POP,
            OP_COS,OP_LOG,OP_EXP,OP_LT,OP_LE,OP_GT,OP_GE,OP_EQ,OP_IF,
            OP_MIN,OP_MAX,OP_LIMIT, OP_FLOOR, OP_CEIL,
-           OP_UN,OP_END,OP_LTIME,OP_NE,OP_ISINF};
+           OP_UN,OP_END,OP_LTIME,OP_NE,OP_ISINF,OP_PREV_OTHER,OP_COUNT,
+           OP_ATAN,OP_SQRT,OP_SORT,OP_REV};
 
 typedef struct rpnp_t {
     enum op_en   op;
@@ -50,3 +53,5 @@ rpnp_t * rpn_expand(rpn_cdefds_t *rpnc);
 void rpn_compact2str(rpn_cdefds_t *rpnc,ds_def_t *ds_def,char **str);
 rpnp_t * rpn_parse(void *key_hash,char *expr, long (*lookup)(void *,char *));
 short rpn_calc(rpnp_t *rpnp, rpnstack_t *rpnstack, long data_idx, rrd_value_t *output, int output_idx);
+
+#endif