/****************************************************************************
- * RRDtool 1.2.9 Copyright by Tobi Oetiker, 1997-2005
+ * RRDtool 1.2.11 Copyright by Tobi Oetiker, 1997-2005
****************************************************************************
* rrd_rpncalc.c RPN calculator functions
****************************************************************************/
* lookup(): a function that retrieves a numeric key given a variable name
*/
rpnp_t *
-rpn_parse(void *key_hash,char *expr,long (*lookup)(void *,char*)){
+rpn_parse(void *key_hash,const char *const expr_const,long (*lookup)(void *,char*)){
int pos=0;
+ char *expr;
long steps=-1;
rpnp_t *rpnp;
char vname[30];
rpnp=NULL;
+ expr=(char *)expr_const;
while(*expr){
if ((rpnp = (rpnp_t *) rrd_realloc(rpnp, (++steps + 2)*