math_expressions 2.0.2

A library for parsing and evaluating mathematical expressions, supporting real numbers, vectors, and basic interval arithmetic.

2.0.2 - 2021-01-08

• Lower precedence of unary minus below power operator to match common mathematics conventions so that -x^y is parsed as -(x^y) instead of (-x)^y

2.0.1 - 2020-09-07

• Add ability to unbind variable names (by wdavies973)
• Fix parsing of ceil function (by pepsin)

2.0.0 - 2020-03-08

• Drop support for Dart SDK versions below 2.1.1
• Enable unnecessary_new lint rule
• Parser throws FormatException instead of StateError or ArgumentError for invalid input string
• Remove underscore syntax previously supported for unary minus
• Fix toString() parser compatibility for the following expressions:
  • Logarithm function: Change string representation from log_b(x) to log(b, x)
  • N-th root function: Change string representation from nrt_n(x) to nrt(n, x)
  • Exponential function: Change string representation from exp(x) to e(x)

1.1.1 - 2019-04-16

• Package health and maintenance cleanups

1.1.0 - 2019-04-16

• Drop support for Dart SDK versions below 2.0.0
• Add arcsin, arccos, arctan functions
• Fix floor and ceil functions
• Update examples and documentation
• Switch to pedantic analysis options

1.0.0 - 2018-08-11

• Add support for Dart 2.0
• Drop support for Dart SDK versions below 1.24.0
• Depend on vector_math 2.0.0 or newer

0.4.0 - 2018-08-10

• Last release to only support Dart 1.x
• Prepare for Dart 2.0
• Enable strong mode
• Analyzer and linter fixes
• Drop support for Dart SDK versions below 1.21.0

0.3.0 - 2016-07-09

• Rename Point3D to Point3
• Point3 now is a subtype of Vector3
• Add mod (%) operator and ceil, floor functions
• Fixing a few missed chain rules in derive

0.2.0+1 - 2015-12-30

• Depend on vector_math 1.4.4 or greater

0.2.0 - 2015-11-19

• Add support for basic vector operations
• Switch to using test instead of unittest package
• Warning: Depends on git version of vector_math as latest pub release is severely outdated

0.1.0 - 2014-07-19

• Add absolute value function (by markhats)
• Add sign function
• Improve test coverage
• Adapt string representation of unary minus to standard syntax

0.0.9 - 2014-03-30

• To create exponentials, use e(x) or e^x. Consequently, removed support for exp(x).
• Improve test coverage
• Update dependencies

0.0.8 - 2013-12-10

• Bring back standard syntax for unary minus: -5 works now. (by markhats)
• Add parser support for e^x additional to exp(x). (by markhats)

0.0.7 - 2013-11-09

• Introduce nested context/naming scopes
• Improve vector evaluation
• Add some missing methods
• Improve test coverage (custom and composite functions)
• Remove boilerplate code

0.0.6 - 2013-11-07

• Add compose operator for functions:
  Use & to conveniently create a CompositeFunction from two existing functions: expr = f & g;
• Improve documentation and dartdoc generation

0.0.5 - 2013-11-06

• Minor code cleanup
• Prepare for Dart 1.0

0.0.4 - 2013-10-11

• Fix handling of operator associativity
• Add support for default functions to parser
• Add support for unary minus to parser:
  Input with underscore. Instead of 2*-5 use 2*_5.

0.0.3 - 2013-10-09

• Add cli evaluator to examples
• Improve test coverage
• Fix bug in differentiation of Sin and Cos
• Remove support of unary minus in Parser

0.0.2 - 2013-10-07

• Improve test coverage
• Improve documentation
• Fix bug in simplification of Minus
• Fix bug in simplification of Times
• Implement evaluation of nth root

0.0.1+1 - 2013-10-06

• Improve documentation and examples

0.0.1 - 2013-10-04

• Initial release of standalone version