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Handle "NaN" and "Infinity" for input values.

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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.
This commit is contained in:
Thomas G. Lockhart
1999-01-10 17:13:06 +00:00
parent 0b644ad332
commit c715788681
1 changed files with 12 additions and 3 deletions
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13
src/backend/utils/adt/float.c
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@ -7,7 +7,7 @@
* *
* *
* IDENTIFICATION * IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/adt/float.c,v 1.35 1998/11/29 01:57:59 tgl Exp $ * $Header: /cvsroot/pgsql/src/backend/utils/adt/float.c,v 1.36 1999/01/10 17:13:06 thomas Exp $
* *
*------------------------------------------------------------------------- *-------------------------------------------------------------------------
*/ */
@ -249,8 +249,17 @@ float8in(char *num)
errno = 0; errno = 0;
val = strtod(num, &endptr); val = strtod(num, &endptr);
if (*endptr != '\0' || errno == ERANGE) if (*endptr != '\0')
{
if (strcasecmp(num, "NaN") == 0)
val = NAN;
else if (strcasecmp(num, "Infinity") == 0)
val = HUGE_VAL;
else if (errno == ERANGE)
elog(ERROR, "Input '%s' is out of range for float8", num);
else
elog(ERROR, "Bad float8 input format '%s'", num); elog(ERROR, "Bad float8 input format '%s'", num);
}
CheckFloat8Val(val); CheckFloat8Val(val);
*result = val; *result = val;