#
math_expressions 2.0.2
math_expressions: ^2.0.2 copied to clipboard

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)`

- Logarithm function: Change string representation from

### 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as latest pub release is severely outdated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