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<title>newLISP v.10.4.2/3 Release Notes </title>
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<h1>newLISP<font size=-2>®</font> v.10.4.3 Stable Release
<font color="red" size="-1">rev 2012-5-7</font></h1>
<p>This stable maintenance release fixes minor bugs and adds new functions in the math and statistics
area.</p>
<p>Release 10.4.2 was released on May 2nd, 2012 and version 10.4.3 on May 7th fixing critical
bugs in <tt>seek</tt> and <tt>close</tt> file operations.</p>
<h3>Additions and changes</h3>
<ul>
<li>A new set function <tt>union</tt> works like <tt>(unique (append ... ))</tt>.</li>
<li>Two new predicates <tt>even?</tt> and <tt>odd?</tt> test the parity of integers.</li>
<li>The new <tt>prob-t</tt> function returns the one-tailed probablitiy of a <em>Student's t</em>
statistic to be equal or greater than the observed value.</li>
<li>The new <tt>prob-f</tt> function returns the probablitiy of <em>F</em>
statistic to be equal or greater than the observed value.</li>
<li>The new <tt>crit-t</tt> function calculates the critical value of <em>Student's t</em>
for a given one-tailed probability.</li>
<li>The new <tt>crit-f</tt> function calculates the critical value of <em>F</em> for
a given probability level.</li>
<li>The <tt>prob-z</tt> and <tt>crit-z</tt> functions now handle probabilities less than
<tt>0.5</tt> for negative <em>Z</em>-values.</li>
<li>The new <tt>corr</tt> function calculates a <em>Pearson</em> product-moment correlation
coefficient between two variables.</li>
<li>The new <tt>stats</tt> function calculates some basic statistics for a data vector.</li>
<li>The new <tt>t-test</tt> function performs a <em>Sudent's t-test</em> for dependent
and independent date samples.</li>
<li>An additional <tt>true</tt> flag in the <tt>char</tt> function can turn on 8-bit byte
indexing and translation instead of multibyte UTF-8 indexing and translation in UTF-8 enabed
versions of newLISP.</li>
<li>A <tt>true</tt> flag in the <tt>file?</tt> forces the return value to the name string
of the file, if it exists.</li>
<li>Versions compiled for the new extended FFI now show "libffi" in the banner.</li>
<li>Better mean-value adherence of the <tt>normal</tt> function.</li>
<li>In the extended ffi the <tt>char*</tt> type will now only accept strings as
arguments. For string or buffer integer addresses <tt>void*</tt> must be used.</li>
<li><tt>import</tt> now can load a library without importing a function. This is necessary
on Mac OSX, Linux and other Unix when external functions are referenced from an imported
function and the library is not loaded automatically.</li>
</ul>
<h3>Modules</h3>
<ul>
<li><tt>newlispdoc</tt> now outputs a UTF-8 meta tag in the HTML header.</li>
<li>A new module <tt>gsl.lsp</tt> imports SV, QR and Cholesky decomposition and
solver functions from the GNU Scientific Library
<a href="http://www.gnu.org/software/gsl/">GSL</a>. Both SV and QR can handle
rectangular non-square matrices for decomposition of <em>A</em> and
solving <em>Ax = b</em> for <em>x</em>.</li>
<li>Updated <tt>plot.lsp</tt> now also has a <tt>plot:XY</tt> command and has been
added to the standard modules in the source and binary distributions.</li>
</ul>
<h3>Bug fixes</h3>
<ul>
<li>The <em>day-of-year</em> value in <tt>date-list</tt> now starts with <tt>1</tt>
instead of <tt>0</tt>. The previous version made the same change for the <tt>now</tt> function.
</li>
<li>The <tt>command-event</tt> function now trims trailing line-feed characters in
all compile and platform flavors. Previously only UNIX and readline lib enabled versions
would trim the string passed by <tt>command-event</tt>.</li>
<li>A fix for <tt>pack</tt> when packing structures made with <tt>struct</tt>
in 64-bit newLISP.</li>
<li>A fix for <tt>seek</tt> when used after <tt>read-line</tt>.</li>
<li><tt>close</tt> had a memory leak introduced in 10.4.0.</li>
</ul>
<h3>Compatibility with previous versions</h3>
<p>Except for bug fixes and behavior of <tt>char*</tt> argument types in the extended
<tt>import</tt> ffi interface, this version is fully compatible with previous versions.</p>
<br/>
<center>∂</center>
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