v0.9.1

Main addition is the support for unary minus and plus operators. The unary plus being a no op.

Full Changelog: v0.8.7...v0.9.1

v0.8.7

• Reworked the user interface to a leaner one with assignments.
• Improved the robustness of error propagation between objects

Full Changelog: v0.7.0...v0.8.7

v0.7.0

Various internal code simplifications and reworks.

In the API, Function class got reworked

• Its arguments number is no longer templated, that did not bring any performance benefit
• DynMathObject only contains a Function or Sequence alternative if it's in a valid state

Full Changelog: v0.6.0...v0.7.0

v0.6.0

Overhaul approach to equation-based math object definition. See readme for more information.

Full Changelog: v0.5.0...v0.6.0

v0.5.0

One more release !

One the menu:

• No more name lookup during evaluation, math objects are directly bound in expressions. Which tremendously improved evaluation speed (now only twice slower than pure C++)
• One single Error struct
• Math objects know their name
• Input variables (to functions) are treated separately from normal variables: during parsing, their name is replaced with their index.

Full Changelog: v0.4.0...v0.5.0

v0.4.0

• Tidy the header files into folders and subfolders
• Use an Implementation / declaration approach on headers, this enables
  • Having a single header source code
  • "include loops" so classes A and B can call each others methods even though both are entirely defined in headers
• Refactor the evaluation code
• Move away from string views into the original expression string and use string copies and a stringview-like class SubstrInfo
  • Had many potential issues with dangling pointers.
• Add the rpn namespace: create and evaluate every math object with the reverse polish notation / postfix representation.
  • This representation has faster evaluation but slower parsing (because it goes through an AST representation first)

Full Changelog: v0.3.0...v0.4.0

v0.3.0

This release introduces the Sequence class: can have an arbitrary expression involving other sequences and functions. A safeguard has been added: a recursion depth limit.

Full Changelog: v0.2.0...v0.3.0

v0.2.0

Notable changes:

• The class Expression and its alias GlobalVariable: which basically is a function without any input. When added to a MathWorld with a name, its expression can depend on other objects and see its value dynamically updated with respect to them.
• Adding objects to MathWorld returns now an expected<object handle, error> so the method does not throw any longer if the name is already taken or it is of the wrong format.

Full Changelog: v0.1.0...v0.2.0

v0.1.0

This is the first tagged version of the library, the main branch won't see its history rewritten starting this point.

This release brings two building blocks of the library:

• Functions
  • Can have an arbitrary number of input variables
  • Functions can call each other if in the same math world, although only with positional arguments.
• Global constants, which can be used in functions' expression. Its value can be changed.

For more information, see the project's README.