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| Apache Commons Numbers 1.1 RELEASE NOTES |
| |
| The Apache Commons Numbers team is pleased to announce the release of |
| commons-numbers-parent-1.1 |
| |
| The Apache Commons Numbers project provides number types and utilities. |
| |
| New features, updates and bug fixes. Adds a commons-numbers-bom module. Requires Java 8. |
| |
| Changes in this version include: |
| |
| New features: |
| o NUMBERS-70: Add a user guide. |
| o NUMBERS-190: Add a Bill of Materials (BOM) to aid in dependency management when referencing |
| multiple Apache Commons Numbers artifacts. The BOM should be used to ensure all |
| imported artifacts are compatible. |
| o NUMBERS-181: Updated support for the beta functions. "RegularizedBeta": Added the |
| complement and derivative of the regularized beta function. |
| Added "IncompleteBeta" and "Beta" classes. |
| Functionality is ported from the Boost C++ library. |
| o NUMBERS-180: "GammaRatio": Compute the ratio of two gamma functions. |
| o NUMBERS-177: "Erfcx": Compute a scaled complementary error function: |
| erfcx(z) = erfc(z) * exp(z*z). |
| o NUMBERS-175: "GeneralizedContinuedFraction": A continued fraction class to compute using a |
| generator. Allows evaluation of continued fractions from a regular series where |
| coefficients can be computed iteratively from the previous coefficients. |
| |
| Fixed Bugs: |
| o NUMBERS-185: "Precision": Allow Precision.compareTo using a maxUlps to be used for sorting. |
| This corrects handling of NaN comparisons. |
| o NUMBERS-182: "LogBeta": Avoid overflow for tiny arguments. |
| o "BrentSolver": Avoid overflow creating the initial value between the lower and upper. |
| o NUMBERS-173: "ContinuedFraction": Set a minimum bound on the relative error epsilon. Prevents |
| an infinite loop when the epsilon is zero. |
| o "FactorialDouble": Prevent caching values that are infinite. The cache will support |
| factorials up to 170. |
| o NUMBERS-170: "RegularizedBeta": Detect edge cases for arguments that can be evaluated by |
| exploiting properties of the regularized beta function. |
| o NUMBERS-168: "BrentSolver": Identify brackets with small objective values. |
| o Fix wrong javadoc. Thanks to Arturo Bernal. |
| |
| Changes: |
| o NUMBERS-184: "Precision": Reduce number of operations in Precision.equals using a maxUlps. |
| o NUMBERS-183: Improve the binomial coefficient classes. Avoid recursive method calls. |
| Avoid overflow for BinomialCoefficientDouble for large results close to infinity. |
| Use precomputed factorials and the LogBeta function for efficiency. |
| o NUMBERS-178: "Factorial/FactorialDouble": Tabulate all factorials with exact 64-bit double |
| representations of n! up to n=170. This change deprecates the FactorialDouble |
| class and removes obsolete caching functionality. |
| o NUMBERS-176: "ContinuedFraction": Update to use a shared implementation with |
| GeneralizedContinuedFraction. |
| o NUMBERS-174: "Gamma/LogGamma/RegularizedGamma": Update the gamma function implementations to |
| increase accuracy and support for extreme values. |
| Functionality is ported from the Boost C++ library. |
| o NUMBERS-172: "Erf/Erfc": Use a rational function approximation accurate to 53-bits of precision. |
| This replaces the use of the regularized gamma functions P and Q and increases accuracy |
| at extreme limits of the function. Execution speed is improved. |
| Functionality is ported from the Boost C++ library. |
| o NUMBERS-171: "InverseErfc": Support full range of [0, 2]. This lowers the supported |
| minimum value from 2^-53 to double min value. Execution speed is improved. |
| Functionality is ported from the Boost C++ library. |
| |
| |
| For complete information on Apache Commons Numbers, including instructions on how to submit bug |
| reports, patches, or suggestions for improvement, see the Apache Commons Numbers website: |
| |
| http://commons.apache.org/proper/commons-numbers/ |
| |
| |
| ============================================================================= |
| |
| Apache Commons Numbers 1.0 RELEASE NOTES |
| |
| The Apache Commons Numbers team is pleased to announce the release of |
| commons-numbers-parent-1.0 |
| |
| The Apache Commons Numbers project provides number types and utilities. |
| |
| This is the first official release of Apache Commons Numbers. |
| |
| Apache Commons Numbers 1.0 contains the following library modules: |
| commons-numbers-angle (requires Java 8+) |
| commons-numbers-arrays (requires Java 8+) |
| commons-numbers-combinatorics (requires Java 8+) |
| commons-numbers-complex (requires Java 8+) |
| commons-numbers-core (requires Java 8+) |
| commons-numbers-field (requires Java 8+) |
| commons-numbers-fraction (requires Java 8+) |
| commons-numbers-gamma (requires Java 8+) |
| commons-numbers-primes (requires Java 8+) |
| commons-numbers-quaternion (requires Java 8+) |
| commons-numbers-rootfinder (requires Java 8+) |
| N.B. the Performance testing module requires Java 9+. (The unit tests require Java 8+) |
| |
| 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. |
| |
| |
| For complete information on Apache Commons Numbers, including instructions on how to submit bug |
| reports, patches, or suggestions for improvement, see the Apache Commons Numbers website: |
| |
| http://commons.apache.org/proper/commons-numbers/ |
| |
| |
| ============================================================================= |
| |
| Apache Commons Numbers 1.0-beta1 RELEASE NOTES |
| |
| The Apache Commons Numbers team is pleased to announce the release of |
| commons-numbers-parent-1.0-beta1 |
| |
| The Apache Commons Numbers project provides number types and utilities. |
| |
| This is a beta release of Apache Commons Numbers. No guarantees are made regarding the stability |
| of the API or compatibility with future releases. |
| |
| Apache Commons Numbers 1.0-beta1 contains the following library modules: |
| commons-numbers-angle (requires Java 8+) |
| commons-numbers-arrays (requires Java 8+) |
| commons-numbers-combinatorics (requires Java 8+) |
| commons-numbers-complex (requires Java 8+) |
| commons-numbers-core (requires Java 8+) |
| commons-numbers-field (requires Java 8+) |
| commons-numbers-fraction (requires Java 8+) |
| commons-numbers-gamma (requires Java 8+) |
| commons-numbers-primes (requires Java 8+) |
| commons-numbers-quaternion (requires Java 8+) |
| commons-numbers-rootfinder (requires Java 8+) |
| |
| No changes defined in this version. |
| |
| For complete information on Apache Commons Numbers, including instructions on how to submit bug |
| reports, patches, or suggestions for improvement, see the Apache Commons Numbers website: |
| |
| http://commons.apache.org/proper/commons-numbers/ |
| |
| |
