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[Octave-bug-tracker] [bug #33863] Two test fails in quadl.m (dev. source
From: |
Tatsuro MATSUOKA |
Subject: |
[Octave-bug-tracker] [bug #33863] Two test fails in quadl.m (dev. source MinGW) |
Date: |
Tue, 26 Jul 2011 04:29:57 +0000 |
User-agent: |
Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/534.30 (KHTML, like Gecko) Chrome/12.0.742.122 Safari/534.30 |
URL:
<http://savannah.gnu.org/bugs/?33863>
Summary: Two test fails in quadl.m (dev. source MinGW)
Project: GNU Octave
Submitted by: tmacchant
Submitted on: 2011年07月26日 04時29分56秒
Category: Interpreter
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: Incorrect Result
Status: None
Assigned to: None
Originator Name:
Originator Email:
Open/Closed: Open
Discussion Lock: Any
Release: dev
Operating System: Microsoft Windows
_______________________________________________________
Details:
Hello
I have encountered two test fails in quadl.m
***** assert ( quadl (@(x) sin (3*x).*cosh (x).*sinh (x),10,15),
2.588424538641647e+10, -9e-15)
!!!!! test failed
assert (quadl (@(x) sin (3 * x) .* cosh (x) .* sinh (x), 10,
15),2.588424538641647e+10,-9e-15) expected
2.5884e+010
but got
2.5884e+010
maximum relative error 1.04636e-014 exceeds tolerance 9e-015
***** assert ( quadl (@(x) sin (2 + 3*x).^2, 0, 10, 0.3, []),
(60 + sin(4) - sin(64))/12, -0.3)
!!!!! test failed
assert (quadl (@(x) sin (2 + 3 * x) .^ 2, 0, 10, 0.3, []),(60 + sin (4) - sin
(64)) / 12,-0.3) expected
4.8603
but got
8.1963
maximum relative error 0.686392 exceeds tolerance 0.3
For the first fail,
> quadl (@(x) sin (3 * x) .* cosh (x) .* sinh (x), 10, 15) -
2.588424538641647e+10
ans = -2.70843505859375e-004
Error seems large.
For second fail, error is apparently large.
I tried
octave:8> quad (@(x) sin (2 + 3 * x) .^ 2, 0, 10, 0.3, [])
warning: implicit conversion from null_matrix to real vector
ans = 4.86026428887461
quadl does not work correctly in some cases.
Regards
Tatsuro
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Tatsuro MATSUOKA <=