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Disable divide by zero warnings on MSVC when generating NAN and INF.

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Use those values rather than calculating them independently.
This commit is contained in:
Andrew Johnson
2009-08-25 18:19:49 +00:00
parent a4e5e540a9
commit f17ac39f29
3 changed files with 15 additions and 13 deletions
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2
src/libCom/calc/calcPerform.c
View File

@@ -135,7 +135,7 @@ epicsShareFunc long
if (itop)
*ptop = (long) *ptop % itop;
else
*ptop = 0.0 / itop; /* NaN */
*ptop = epicsNAN; /* NaN */
break;
case POWER:

10
src/libCom/osi/epicsMath.cpp
View File

@@ -9,6 +9,11 @@
#define epicsExportSharedSymbols
#include <epicsMath.h>
#ifdef _MSC_VER
#pragma warning(push)
#pragma warning(disable:4723)
#endif
static float makeNAN ( void )
{
float a = 0, b = 0;
@@ -25,3 +30,8 @@ extern "C" {
epicsShareDef float epicsNAN = makeNAN();
epicsShareDef float epicsINF = makeINF();
}
#ifdef _MSC_VER
#pragma warning(pop)
#endif

16
src/rec/selRecord.c
View File

@@ -84,11 +84,6 @@ static void do_sel(selRecord *);
static int fetch_values(selRecord *);
static void monitor(selRecord *);
/* This needed to prevent the MS optimizer from barfing */
static double divide(double num, double den) { return num / den; }
static double NaN, Inf;
static long init_record(selRecord *prec, int pass)
{
@@ -98,9 +93,6 @@ static long init_record(selRecord *prec, int pass)
if (pass==0) return(0);
NaN = divide(0.0, 0.0);
Inf = divide(1.0, 0.0);
/* get seln initial value if nvl is a constant*/
if (prec->nvl.type == CONSTANT ) {
recGblInitConstantLink(&prec->nvl,DBF_USHORT,&prec->seln);
@@ -109,7 +101,7 @@ static long init_record(selRecord *prec, int pass)
plink = &prec->inpa;
pvalue = &prec->a;
for(i=0; i<SEL_MAX; i++, plink++, pvalue++) {
*pvalue = NaN;
*pvalue = epicsNAN;
if (plink->type==CONSTANT) {
recGblInitConstantLink(plink,DBF_DOUBLE,pvalue);
}
@@ -365,7 +357,7 @@ static void do_sel(selRecord *prec)
val = *(pvalue+prec->seln);
break;
case (selSELM_High_Signal):
val = -Inf;
val = -epicsINF;
for (i = 0; i < SEL_MAX; i++,pvalue++){
if (!isnan(*pvalue) && val < *pvalue) {
val = *pvalue;
@@ -374,7 +366,7 @@ static void do_sel(selRecord *prec)
}
break;
case (selSELM_Low_Signal):
val = Inf;
val = epicsINF;
for (i = 0; i < SEL_MAX; i++,pvalue++){
if (!isnan(*pvalue) && val > *pvalue) {
val = *pvalue;
@@ -384,7 +376,7 @@ static void do_sel(selRecord *prec)
break;
case (selSELM_Median_Signal):
count = 0;
order[0] = NaN;
order[0] = epicsNAN;
for (i = 0; i < SEL_MAX; i++,pvalue++){
if (!isnan(*pvalue)){
/* Insertion sort */