The Apache Commons Team is pleased to announce the availability of
version 1.0 of "Apache Commons Numbers".
Apache Commons Numbers provides number types and utilities.
Changes in this version include:
Fixed Bugs:
o NUMBERS-153: Use iterative implementation of "trigamma" function. Thanks to
Dmitriy Golovashkin for reporting. Thanks to Gilles Sadowski.
o NUMBERS-150: "Fraction/BigFraction": Fixed pow(int) to handle
Integer.MIN_VALUE and throw ArithmeticException for negative exponents to a
fraction of zero. Thanks to Jin Xu.
o NUMBERS-147: Fixed Fraction/BigFraction from(double, int) to support
Integer.MIN_VALUE as max denominator. Thanks to Alex Herbert.
Changes:
o NUMBERS-163: Combined "LinearCombination" and "Summation" into single "Sum"
class. Thanks to Matt Juntunen.
o NUMBERS-164: Added SortInPlace utility, original from Commons Math. Thanks
to Gilles Sadowski.
o NUMBERS-159: Moved "Norms", "LinearCombination", and "Summation" from
commons-numbers-arrays module to commons-numbers-core module. Moved
"CosAngle" from commons-numbers-arrays module to commons-numbers-angle
module. Thanks to Matt Juntunen.
o NUMBERS-156: Replaced "SafeNorm" with "Norms". Added "Summation" class for
extended precision summation. Thanks to Matt Juntunen.
o NUMBERS-161: "Angle" replaces "PlaneAngle" and "PlaneAngleRadians". Thanks
to Gilles Sadowski.
o NUMBERS-158: Replace angle normalize method with normalizer method that
returns operator instance. Thanks to Gilles Sadowski.
o NUMBERS-157: Adding Reduce operation originally from Commons Math to
commons-numbers-angle module. Thanks to Gilles Sadowski.
o NUMBERS-142: "LinearCombination": Update to use the dot2s algorithm. Avoids
construction of an intermediate array for array dot products. Update the
hi-lo splitting algorithm to use Dekker's split to ensure the product
round-off is computed to exact precision. Thanks to Alex Herbert.
o NUMBERS-154: Precision compareTo method now handles NaN properly to ensure
consistent sorting. Thanks to Gilles Sadowski.
o NUMBERS-149: "Fraction": Port tests from commons-lang Fraction to
demonstrate functional compatibility between the lang and numbers
implementation of Fraction. Thanks to Jin Xu.
o NUMBERS-151: "ArithmeticUtils": Refine pow(int, int) and pow(long, int) for
edge cases. Thanks to Jin Xu.
Historical list of changes:
https://commons.apache.org/proper/commons-numbers/changes-report.html
For complete information on Apache Commons Number, including instructions on how
to submit bug reports, patches, or suggestions for improvement, see the
Apache Commons Numbers website:
https://commons.apache.org/proper/commons-numbers/
Distribution packages can be downloaded from
http://commons.apache.org/proper/commons-numbers/download_numbers.cgi
Regards,
Matt Juntunen, on behalf of the Apache Commons Team
