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<div class="moz-cite-prefix">Le 12/09/2019 à 18:55, Stéphane
Mottelet a écrit :<br>
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<blockquote type="cite"
cite="mid:5ca07ea9-bf8d-dd92-958c-6abac0ce5e1a@utc.fr">I prefer
the display after applying
<a class="moz-txt-link-freetext" href="https://codereview.scilab.org/#/c/20981/">https://codereview.scilab.org/#/c/20981/</a>:
<br>
<br>
--> x0=%pi/4;h=%eps/2
<br>
h =
<br>
<br>
1.110D-16
<br>
<br>
--> cos(x0+%i*h)
<br>
ans =
<br>
<br>
0.7071068 - 7.850D-17i
<br>
<br>
However, we could discuss if the arbitrary switch to "e" mode is
desirable or not, but since Scilab 6.0 we have got used to this
display mixing "v" and "e" mode...
<br>
</blockquote>
<p><br>
</p>
<p>... and IMO it's very suitable. The only rule should be that, <b><i>for
a given format's width</i></b>, <b><i>the more the number of
significant displayed figures the better.</i></b> When the
exponent format is used, it takes 4 or 5 digits (D+12, D+123). As
a consequence, in v mode, small (absolute) values should be
displayed in normal mode down to 4 non-significant 0 (e.g.
0.000012), and switched to "e" mode beyond.</p>
<p>In v mode, forcing the display of 0.0123456 in "e" mode on the
(bad) reason that some other huge or tiny numbers in the matrix
are displayed in this mode, would print 1.234D-02, and so make
invisible 2 significant figures.<br>
I do not see any reason that would impose the display mode to be
homogeneous over all elements of a matrix, possibly canceling the
display of significant figures in the given format's width.</p>
<p>Regards</p>
<p>Samuel</p>
<p><br>
</p>
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