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* [Bug fortran/14394] New: [gfortran] Intrinsic TAN function returns incorrect value @ 2004-03-03 2:54 bdavis9659 at comcast dot net 2004-03-03 3:56 ` [Bug fortran/14394] " pinskia at gcc dot gnu dot org ` (3 more replies) 0 siblings, 4 replies; 5+ messages in thread From: bdavis9659 at comcast dot net @ 2004-03-03 2:54 UTC (permalink / raw) To: gcc-bugs This test distilled from the NIST F77 compiler validation suite, test FM374: $ cat z.f REAL AVS,BVS BVS = 1.5747025767 AVS = TAN(BVS) PRINT*,AVS END $ /usr/local/bin/gfortran -static -g z.f $ ./a.out -255.9724 The expected value is -256 +- 0.02 (according to the test) g77 meets this requirement: $ g77 z.f $ ./a.out -255.995834 Looking at the output of -fdump-tree-all $ cat z.f.t03.original MAIN__ () { real4 bvs; real4 avs; bvs = 1.5747029781341552734375e+0; avs = __builtin_tanf (bvs); _gfortran_filename = "z.f"; _gfortran_line = 4; _gfortran_ioparm.unit = 6; _gfortran_ioparm.list_format = 1; _gfortran_st_write (); _gfortran_transfer_real (&avs, 4); _gfortran_st_write_done ();; } The difference in the two constants explains the difference, so it appears to be a problem in the fortran front end instead of tan(). -- Summary: [gfortran] Intrinsic TAN function returns incorrect value Product: gcc Version: tree-ssa Status: UNCONFIRMED Severity: normal Priority: P2 Component: fortran AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: bdavis9659 at comcast dot net CC: gcc-bugs at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14394 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug fortran/14394] [gfortran] Intrinsic TAN function returns incorrect value 2004-03-03 2:54 [Bug fortran/14394] New: [gfortran] Intrinsic TAN function returns incorrect value bdavis9659 at comcast dot net @ 2004-03-03 3:56 ` pinskia at gcc dot gnu dot org 2004-03-10 4:46 ` pinskia at gcc dot gnu dot org ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: pinskia at gcc dot gnu dot org @ 2004-03-03 3:56 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From pinskia at gcc dot gnu dot org 2004-03-03 03:56 ------- Actually this might not be a front-end problem but then again it might be parsing the number wrong. Well it works in the C front-end so it looks like the number is being parsed wrong or just getting a rounding error when parsing. -- What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Ever Confirmed| |1 Keywords| |wrong-code Last reconfirmed|0000-00-00 00:00:00 |2004-03-03 03:56:01 date| | Target Milestone|--- |tree-ssa http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14394 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug fortran/14394] [gfortran] Intrinsic TAN function returns incorrect value 2004-03-03 2:54 [Bug fortran/14394] New: [gfortran] Intrinsic TAN function returns incorrect value bdavis9659 at comcast dot net 2004-03-03 3:56 ` [Bug fortran/14394] " pinskia at gcc dot gnu dot org @ 2004-03-10 4:46 ` pinskia at gcc dot gnu dot org 2004-04-11 16:06 ` cvs-commit at gcc dot gnu dot org 2004-04-11 17:00 ` pinskia at gcc dot gnu dot org 3 siblings, 0 replies; 5+ messages in thread From: pinskia at gcc dot gnu dot org @ 2004-03-10 4:46 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From pinskia at gcc dot gnu dot org 2004-03-10 04:46 ------- Patch is here: <http://gcc.gnu.org/ml/gcc-patches/2004-03/msg00828.html>. -- What |Removed |Added ---------------------------------------------------------------------------- Keywords| |patch http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14394 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug fortran/14394] [gfortran] Intrinsic TAN function returns incorrect value 2004-03-03 2:54 [Bug fortran/14394] New: [gfortran] Intrinsic TAN function returns incorrect value bdavis9659 at comcast dot net 2004-03-03 3:56 ` [Bug fortran/14394] " pinskia at gcc dot gnu dot org 2004-03-10 4:46 ` pinskia at gcc dot gnu dot org @ 2004-04-11 16:06 ` cvs-commit at gcc dot gnu dot org 2004-04-11 17:00 ` pinskia at gcc dot gnu dot org 3 siblings, 0 replies; 5+ messages in thread From: cvs-commit at gcc dot gnu dot org @ 2004-04-11 16:06 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From cvs-commit at gcc dot gnu dot org 2004-04-11 12:49 ------- Subject: Bug 14394 CVSROOT: /cvs/gcc Module name: gcc Branch: tree-ssa-20020619-branch Changes by: pbrook@gcc.gnu.org 2004-04-11 12:49:14 Modified files: gcc/fortran : ChangeLog trans-const.c Log message: PR 14394 * trans-const.c (gfc_conv_mpf_to_tree): Loosen the maximum digits of the real value when converting mpf to string. Patches: http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/fortran/ChangeLog.diff?cvsroot=gcc&only_with_tag=tree-ssa-20020619-branch&r1=1.1.2.136&r2=1.1.2.137 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/fortran/trans-const.c.diff?cvsroot=gcc&only_with_tag=tree-ssa-20020619-branch&r1=1.1.2.6&r2=1.1.2.7 -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14394 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug fortran/14394] [gfortran] Intrinsic TAN function returns incorrect value 2004-03-03 2:54 [Bug fortran/14394] New: [gfortran] Intrinsic TAN function returns incorrect value bdavis9659 at comcast dot net ` (2 preceding siblings ...) 2004-04-11 16:06 ` cvs-commit at gcc dot gnu dot org @ 2004-04-11 17:00 ` pinskia at gcc dot gnu dot org 3 siblings, 0 replies; 5+ messages in thread From: pinskia at gcc dot gnu dot org @ 2004-04-11 17:00 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From pinskia at gcc dot gnu dot org 2004-04-11 16:06 ------- Fixed. -- What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution| |FIXED http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14394 ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2004-04-11 16:06 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2004-03-03 2:54 [Bug fortran/14394] New: [gfortran] Intrinsic TAN function returns incorrect value bdavis9659 at comcast dot net 2004-03-03 3:56 ` [Bug fortran/14394] " pinskia at gcc dot gnu dot org 2004-03-10 4:46 ` pinskia at gcc dot gnu dot org 2004-04-11 16:06 ` cvs-commit at gcc dot gnu dot org 2004-04-11 17:00 ` pinskia at gcc dot gnu dot org
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