Re: breaktable checks in dbLexRoutines.c in 3.14.9

[Andrew Johnson <anj@aps.anl.gov>]

I propose to apply the following change in base/src/dbStaticLib which 
permits non-monotonic breakpoint tables to be loaded after the variable 
dbBptNotMonotonic has been explicitly set to a non-zero value.  If 
you're using iocsh you will also need to add the variable declaration to 
the base/src/misc/base.dbd file to be able to set it in an st.cmd file. 
 I hope this is an acceptable solution.

Index: dbLexRoutines.c
===================================================================
RCS file: 
/net/phoebus/epicsmgr/cvsroot/epics/base/src/dbStatic/dbLexRoutines.c,v
retrieving revision 1.27.2.17
diff -u -b -r1.27.2.17 dbLexRoutines.c
--- dbLexRoutines.c     18 Apr 2007 19:57:17 -0000      1.27.2.17
+++ dbLexRoutines.c     13 Aug 2007 15:04:51 -0000
@@ -45,6 +45,9 @@
 epicsShareDef int dbRecordsOnceOnly=0;
 epicsExportAddress(int,dbRecordsOnceOnly);

+epicsShareDef int dbBptNotMonotonic=0;
+epicsExportAddress(int,dbBptNotMonotonic);
+
 /*private routines */
 static void yyerrorAbort(char *str);
 static void allocTemp(void *pvoid);
@@ -874,7 +877,7 @@
          (paBrkInt[i+1].raw - paBrkInt[i].raw);
        if (i == 0) {
            down = (slope < 0);
-       } else if (down != (slope < 0)) {
+       } else if (!dbBptNotMonotonic && down != (slope < 0)) {
            yyerrorAbort("breaktable: curve slope changes sign");
            return;
        }

- Andrew
--
When a distinguished but elderly scientist states that something is
possible, he is almost certainly right.  When he states that something
is impossible, he is very probably wrong.  -- Arthur C. Clarke