This is the mail archive of the
gsl-discuss@sources.redhat.com
mailing list for the GSL project.
Re: matrix decompositions fails on Max os X 10.2
- From: "Erik Ø. Sørensen" <sameos at mac dot com>
- To: Brian Gough <bjg at network-theory dot co dot uk>
- Cc: gsl-discuss at sources dot redhat dot com
- Date: Fri, 6 Sep 2002 16:14:20 -0400
- Subject: Re: matrix decompositions fails on Max os X 10.2
On Friday, September 6, 2002, at 02:01 PM, Brian Gough wrote:
Try compiling that directory without optimisation, to see if it is
compiler-related. I think it is likely to be, since the code works on
other platforms.
I have recompiled with less optimization, and with -O0 the matrix
decompositions work. This, however, allowed me to find another mistake.
Compiling the tests with no optimization, they stop further down, in
the specfunc directory. Only this failure is reported:
FAIL: gsl_sf_conicalP_0_e(0.0, 100.0, &r)
expected: 0.3009174858819926
obtained: 0.300917485881992 7.027199282265925e-16 2.33526e-15
fracdiff: 1.014601497407329e-15
value not within tolerance of expected value
0.30091748588199202 7.02719928226592486e-16
This is the only reported failure when the full make check is compiled
with no optimization. And it is awfully close to machine epsilon.
I must retract a statement I made in an earlier posting about the
beneficial effect of Apple's upgrade of gcc. It seems I must
inadvertently have compiled the checks with less than -O2 when the
internal compiler error first disappeared. I am sorry for that.
--
Erik Ø. Sørensen,
phd student, Economics
Norwegian School of Economics and Business Administration
B E G I N : V C A R D
V E R S I O N : 3 . 0
N : S ø r e n s e n ; E r i k Ø . ; ; ;
F N : E r i k Ø . S ø r e n s e n
O R G : N o r w e g i a n S c h o o l o f E c o n o m i c s ;
T I T L E : p h d s t u d e n t
E M A I L ; t y p e = W O R K ; t y p e = p r e f : e r i k . s o r e n s e n @ n h h . n o
T E L ; t y p e = W O R K ; t y p e = p r e f : 1 6 1 3 5 3 3 6 0 0 0 x 7 4 0 3 0
T E L ; t y p e = H O M E : 1 6 1 3 5 4 5 3 3 9 7
T E L ; t y p e = F A X : 1 6 1 3 5 3 3 2 2 5 7
A D R ; t y p e = H O M E ; t y p e = p r e f : ; ; 2 3 3 J o h n s o n S t . ; K i n g s t o n ; O n t a r i o ; K 7 L 1 Y 2 ; C a n a d a
A D R ; t y p e = W O R K : ; ; Q u e e n ' s U n i v e r s i t y \ n E c o n o m i c s D e p a r t m e n t \ n D u n n i n g H a l l \ , 9 4 U n i v . a v e n u e ; K i n g s t o n ; O n t a r i o ; K 7 L 3 N 6 ; C a n a d a
U R L : h t t p : / / w w w . g e o c i t i e s . c o m / e r i k _ o i o i l f /
E N D : V C A R D