help-octave
[
Top
][
All Lists
]
Advanced
[
Date Prev
][
Date Next
][
Thread Prev
][
Thread Next
][
Date Index
][
Thread Index
]
Re: Calculation issue with octave (data unexpectedly go to zero at some
From
:
Dmitri A. Sergatskov
Subject
:
Re: Calculation issue with octave (data unexpectedly go to zero at some point)
Date
:
Thu, 27 Feb 2014 20:11:45 -0600
Back to the original problem.
I think if we pre-scale argument such that X is about MAXINT, we get the max
possible accuracy in this situation. In this particular case
Gamma = 1.62e7;
duration = 10/Gamma;
dt = 0.0025/Gamma;
t = 0:dt:duration;
sc = 2^31 / duration ;
y = mod (sc*t, sc*0.2/Gamma)/sc;
[a,b] = find(abs(y) < eps);
sum(a)
ans = 51
b =
Columns 1 through 11:
1 81 161 241 321 401 481 561 641 721 801
Columns 12 through 22:
881 961 1041 1121 1201 1281 1361 1441 1521 1601 1681
Columns 23 through 33:
1761 1841 1921 2001 2081 2161 2241 2321 2401 2481 2561
Columns 34 through 44:
2641 2721 2801 2881 2961 3041 3121 3201 3281 3361 3441
Columns 45 through 51:
3521 3601 3681 3761 3841 3921 4001
Perhaps we should include such pre-scaling in the code of rem and mod
if we try for matlab compatibility...
Dmitri.
--
reply via email to
[
Prev in Thread
]
Current Thread
[
Next in Thread
]
Re: Calculation issue with octave (data unexpectedly go to zero at some point)
,
(continued)
Re: Calculation issue with octave (data unexpectedly go to zero at some point)
,
ghaverla
,
2014/02/28
Re: Calculation issue with octave (data unexpectedly go to zero at some point)
,
Juan Pablo Carbajal
,
2014/02/27
Re: Calculation issue with octave (data unexpectedly go to zero at some point)
,
Ozzy Lash
,
2014/02/27
Re: Calculation issue with octave (data unexpectedly go to zero at some point)
,
Ozzy Lash
,
2014/02/27
Re: Calculation issue with octave (data unexpectedly go to zero at some point)
,
Dmitri A. Sergatskov
,
2014/02/27
Re: Calculation issue with octave (data unexpectedly go to zero at some point)
,
Brian Kaczynski
,
2014/02/27
Re: Calculation issue with octave (data unexpectedly go to zero at some point)
,
Dmitri A. Sergatskov
,
2014/02/27
Re: Calculation issue with octave (data unexpectedly go to zero at some point)
,
Ben Abbott
,
2014/02/27
Re: Calculation issue with octave (data unexpectedly go to zero at some point)
,
Dmitri A. Sergatskov
,
2014/02/27
Re: Calculation issue with octave (data unexpectedly go to zero at some point)
,
Ben Abbott
,
2014/02/27
Re: Calculation issue with octave (data unexpectedly go to zero at some point)
,
Dmitri A. Sergatskov
<=
Re: Calculation issue with octave (data unexpectedly go to zero at some point)
,
Juan Pablo Carbajal
,
2014/02/28
Re: Calculation issue with octave (data unexpectedly go to zero at some point)
,
Ozzy Lash
,
2014/02/28
Re: Calculation issue with octave (data unexpectedly go to zero at some point)
,
Juan Pablo Carbajal
,
2014/02/28
Re: Calculation issue with octave (data unexpectedly go to zero at some point)
,
Juan Pablo Carbajal
,
2014/02/28
Re: Calculation issue with octave (data unexpectedly go to zero at some point)
,
Ozzy Lash
,
2014/02/28
Prev by Date:
Re: Calculation issue with octave (data unexpectedly go to zero at some point)
Next by Date:
Rand implementation question
Previous by thread:
Re: Calculation issue with octave (data unexpectedly go to zero at some point)
Next by thread:
Re: Calculation issue with octave (data unexpectedly go to zero at some point)
Index(es):
Date
Thread