https://github.com/ondrejspanel/formulafx

Expression (line based) calculator
https://github.com/ondrejspanel/formulafx

Last synced: 23 days ago
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Expression (line based) calculator

• Host: GitHub
• URL: https://github.com/ondrejspanel/formulafx
• Owner: OndrejSpanel
• License: gpl-2.0
• Created: 2016-03-26T22:31:18.000Z (over 8 years ago)
• Default Branch: master
• Last Pushed: 2024-09-16T14:55:46.000Z (about 2 months ago)
• Last Synced: 2024-09-16T17:09:49.525Z (about 2 months ago)
• Language: Scala
• Size: 303 KB
• Stars: 1
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: license

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README

        
# FormulaFX

Expression (line based) calculator

Online version at [FormulaFX live](https://ondrejspanel.github.io/FormulaFX)

Number format:

----

- floating point `123.456`, `123.456e78`

- hexadecimal `0x123456`

- minutes:seconds or hours:minutes `12:34.56`

- hours:minutes:seconds  `12:34:56.78`

- percent `123.45%`

When hexadecimal or other special notation is used in the expression, the result is displayed using the same notation if possible.

Supported operators:

----

- `^`

- `*` `/`

- `+` `-`

Supported functions:

----

- `exp`

- `ln`

- `sin`, `cos`, `tan`

- `asin`, `acos`, `atan`

- `sqrt`

- `log`

- `floor`, `ceil`, `round`

- `signum`

- `abs`

- `sinh`, `cosh`, `tanh`

- `hex`

Variables

----

It is possible to define variables. Variable to be defined may be written in any position in the equation, like:

- `a = 458`

- `458 = a`

- `a * 5 = 25`

- `sin(a) = 0.5`

There can be at most one undefined variable used in the equation. If there is no undefined variable, the leftmost variable

is considered to be undefined. The undefined variable may have only one occurence.