SIGFPE calculating epicsNAN, epicsINF

[Matthieu Bec]

R3.14.11 brings two new math constants epicsNAN and epicsINF. That appears to break our channel access plugin for Yorick, because the interpreter enables and is setup to catch SIGFPE.

C99 provides macros so you don't have to 'make' the value. I patched our src/libCom/osi/epicsMath.cpp. I don't guarantee this to be osi-generic and all platforms. It works for linux-x86/x86_64

diff src/libCom/osi/epicsMath.cpp src/libCom/osi/epicsMath.cpp.org
30,32d29
< #ifdef NAN
< epicsShareDef float epicsNAN = NAN;
< #else
34,37d30
< #endif
< #ifdef INFINITY
< epicsShareDef float epicsINF = INFINITY;
< #else
39d31
< #endif

I'm not sure this is a bug or an issue with in my plugin implementation.
For ref. the original post I sent to tech-talk asking about the issue: http://www.aps.anl.gov/epics/tech-talk/2009/msg01596.php

Thanks.