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[Bug c/42184] Same literal behaves differently as a double than as a long double
- From: "kargl at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 26 Nov 2009 17:13:26 -0000
- Subject: [Bug c/42184] Same literal behaves differently as a double than as a long double
- References: <bug-42184-1764@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #1 from kargl at gcc dot gnu dot org 2009-11-26 17:13 -------
I think that you may be looking at a library issue
and the conversion of a decimal string to binary.
Add
printf("%La\n%La\n%La\n%La\n", value1, value2, value3, value4);
to your program yields
REMOVE:kargl[209] ./z
0x1.68f5c2c528fa3p+70
0x1.68f5c2c528fa3p+70
0x1.68f5c2c528fa3p+70
0x1.68f5c2c528fa36p+70
1 1 1 0
on FreeBSD. If I replace 1.6646342e21 everywhere in your program
with 0x1.68f5c2c528fa3p+70, I get the result you expect, ie.,
REMOVE:kargl[212] ./z
0x1.68f5c2c528fa3p+70
0x1.68f5c2c528fa3p+70
0x1.68f5c2c528fa3p+70
0x1.68f5c2c528fa3p+70
1 1 1 1
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42184