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app-text/pandoc: huge version bump

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nemunaire 2018-11-16 04:34:05 +01:00
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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
<maintainer type="project">
<email>haskell@gentoo.org</email>
<name>Gentoo Haskell</name>
</maintainer>
<longdescription>
&quot;Data.Scientific&quot; provides the number type &#39;Scientific&#39;. Scientific numbers are
arbitrary precision and space efficient. They are represented using
&lt;http://en.wikipedia.org/wiki/Scientific_notation scientific notation&gt;.
The implementation uses a coefficient @c :: &#39;Integer&#39;@ and a base-10 exponent
@e :: &#39;Int&#39;@. A scientific number corresponds to the
&#39;Fractional&#39; number: @&#39;fromInteger&#39; c * 10 &#39;^^&#39; e@.
Note that since we&#39;re using an &#39;Int&#39; to represent the exponent these numbers
aren&#39;t truly arbitrary precision. I intend to change the type of the exponent
to &#39;Integer&#39; in a future release.
The main application of &#39;Scientific&#39; is to be used as the target of parsing
arbitrary precision numbers coming from an untrusted source. The advantages
over using &#39;Rational&#39; for this are that:
* A &#39;Scientific&#39; is more efficient to construct. Rational numbers need to be
constructed using &#39;%&#39; which has to compute the &#39;gcd&#39; of the &#39;numerator&#39; and
&#39;denominator&#39;.
* &#39;Scientific&#39; is safe against numbers with huge exponents. For example:
@1e1000000000 :: &#39;Rational&#39;@ will fill up all space and crash your
program. Scientific works as expected:
&gt;&gt;&gt; read &quot;1e1000000000&quot; :: Scientific
1.0e1000000000
* Also, the space usage of converting scientific numbers with huge exponents to
@&#39;Integral&#39;s@ (like: &#39;Int&#39;) or @&#39;RealFloat&#39;s@ (like: &#39;Double&#39; or &#39;Float&#39;)
will always be bounded by the target type.
</longdescription>
</pkgmetadata>