Gilles created MATH-910:
---------------------------
Summary: "ebe..." basic operations in "MathArrays"
Key: MATH-910
URL: https://issues.apache.org/jira/browse/MATH-910
Project: Commons Math
Issue Type: New Feature
Reporter: Gilles
Assignee: Gilles
Priority: Trivial
Fix For: 3.1
I propose to add element-by-element addition, subtraction, division and
multiplication in the "MathArrays" class. E.g. "ebeDivide" would be defined as:
{code}
/**
* Creates an array whose contents will be the element-by-element
* division of the first argument by the second.
*
* @param numer Numerator of the division.
* @param denom Denominator of the division.
* @return a new array {@code r} where {@code r[i] = numer[i] / denom[i]}.
* @throws DimensionMismatchException if the array lengths differ.
*/
public static double[] ebeDivide(double[] numer,
double[] denom) {
if (numer.length != denom.length) {
throw new DimensionMismatchException(numer.length, denom.length);
}
final double[] result = numer.clone();
for (int i = 0; i < numer.length; i++) {
result[i] /= denom[i];
}
return result;
}
{code}
This would allow to resolve MATH-895 without settling the discussion on how the
API of {{RealVector}} should change.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
