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Change parse-time representation of float literals (which include oversize

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integers) to be strings instead of 'double'.  We convert from string form
to internal representation only after type resolution has determined the
correct type for the constant.  This eliminates loss-of-precision worries
and gets rid of the change in behavior seen at 17 digits with the
previous kluge.
This commit is contained in:
Tom Lane
2000-02-21 18:47:12 +00:00
parent ee97d103cc
commit 393f313227
12 changed files with 186 additions and 186 deletions
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17
src/backend/nodes/outfuncs.c
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@ -6,7 +6,7 @@
* Portions Copyright (c) 1996-2000, PostgreSQL, Inc
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Header: /cvsroot/pgsql/src/backend/nodes/outfuncs.c,v 1.109 2000/02/20 21:32:05 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/nodes/outfuncs.c,v 1.110 2000/02/21 18:47:00 tgl Exp $
*
* NOTES
* Every (plan) node in POSTGRES has an associated "out" routine which
@ -1265,16 +1265,19 @@ _outValue(StringInfo str, Value *value)
{
switch (value->type)
{
case T_String:
appendStringInfo(str, " \"");
_outToken(str, value->val.str);
appendStringInfo(str, "\" ");
break;
case T_Integer:
appendStringInfo(str, " %ld ", value->val.ival);
break;
case T_Float:
appendStringInfo(str, " %.17g ", value->val.dval);
/* We assume the value is a valid numeric literal
* and so does not need quoting.
*/
appendStringInfo(str, " %s ", value->val.str);
break;
case T_String:
appendStringInfo(str, " \"");
_outToken(str, value->val.str);
appendStringInfo(str, "\" ");
break;
default:
elog(NOTICE, "_outValue: don't know how to print type %d ",