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Correction to the javadoc of distribution.FastCosineTransformer (MATH-677). 

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/trunk@1213585 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Sebastien Brisard 2011-12-13 07:44:52 +00:00
parent 99e20606f6
commit 789dca850c
1 changed files with 2 additions and 2 deletions
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src/main/java/org/apache/commons/math/transform/FastCosineTransformer.java
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@ -38,7 +38,7 @@ import org.apache.commons.math.util.FastMath;
* DCT-I is equivalent to DFT of an <em>even extension</em> of the data series. * DCT-I is equivalent to DFT of an <em>even extension</em> of the data series.
* More precisely, if x<sub>0</sub>, &hellip;, x<sub>N-1</sub> is the data set * More precisely, if x<sub>0</sub>, &hellip;, x<sub>N-1</sub> is the data set
* to be cosine transformed, the extended data set * to be cosine transformed, the extended data set
* x<sub>0</sub><sup>&#35;</sup>, &hellip;, x<sub>2N-2</sub><sup>&#35;</sup> * x<sub>0</sub><sup>&#35;</sup>, &hellip;, x<sub>2N-3</sub><sup>&#35;</sup>
* is defined as follows * is defined as follows
* <ul> * <ul>
* <li>x<sub>k</sub><sup>&#35;</sup> = x<sub>k</sub> if 0 &le; k &lt; N,</li> * <li>x<sub>k</sub><sup>&#35;</sup> = x<sub>k</sub> if 0 &le; k &lt; N,</li>
@ -50,7 +50,7 @@ import org.apache.commons.math.util.FastMath;
* Then, the "standard" DCT-I (as returned by {@link #create()}) of the real * Then, the "standard" DCT-I (as returned by {@link #create()}) of the real
* data set x<sub>0</sub>, &hellip;, x<sub>N-1</sub> is equal to * data set x<sub>0</sub>, &hellip;, x<sub>N-1</sub> is equal to
* <em>half</em> of the N first elements of the DFT of the extended data set * <em>half</em> of the N first elements of the DFT of the extended data set
* x<sub>0</sub><sup>&#35;</sup>, &hellip;, x<sub>2N-2</sub><sup>&#35;</sup>. * x<sub>0</sub><sup>&#35;</sup>, &hellip;, x<sub>2N-3</sub><sup>&#35;</sup>.
* </p> * </p>
* <p> * <p>
* The present implementation of the fast cosine transform requires the length * The present implementation of the fast cosine transform requires the length