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Commitc715788

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author
Thomas G. Lockhart
committed
Handle "NaN" and "Infinity" for input values.
I think NAN is already guaranteed to be there from Jan's work on NUMERIC, but perhaps HUGE_VAL needs some #ifndef's in the same place.Should also include "-Infinity" as -HUGE_VAL sometime; not there yet.
1 parent0b644ad commitc715788

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+12
-3
lines changed

1 file changed

+12
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‎src/backend/utils/adt/float.c

Lines changed: 12 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -7,7 +7,7 @@
77
*
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*
99
* IDENTIFICATION
10-
* $Header: /cvsroot/pgsql/src/backend/utils/adt/float.c,v 1.35 1998/11/29 01:57:59 tgl Exp $
10+
* $Header: /cvsroot/pgsql/src/backend/utils/adt/float.c,v 1.36 1999/01/10 17:13:06 thomas Exp $
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*
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*-------------------------------------------------------------------------
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*/
@@ -249,8 +249,17 @@ float8in(char *num)
249249

250250
errno=0;
251251
val=strtod(num,&endptr);
252-
if (*endptr!='\0'||errno==ERANGE)
253-
elog(ERROR,"Bad float8 input format '%s'",num);
252+
if (*endptr!='\0')
253+
{
254+
if (strcasecmp(num,"NaN")==0)
255+
val=NAN;
256+
elseif (strcasecmp(num,"Infinity")==0)
257+
val=HUGE_VAL;
258+
elseif (errno==ERANGE)
259+
elog(ERROR,"Input '%s' is out of range for float8",num);
260+
else
261+
elog(ERROR,"Bad float8 input format '%s'",num);
262+
}
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255264
CheckFloat8Val(val);
256265
*result=val;

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