72 lines
1.2 KiB
Markdown
72 lines
1.2 KiB
Markdown
# SCL: Simple CAS Language
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Version v1.0-alpha
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## Usage
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```bash
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git clone https://git.signorovitch.org/jacob/scl -b stable
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cd scl
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make release
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./scl.out
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```
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### For Development
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```bash
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git clone git@signorovitch.org:jacob/scl --recurse-submodules && cd scl
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make all test
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./scl.out
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```
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If you wish to run tests, make sure to run `git clone --recurse-submodules` to
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include the [Unity](https://github.com/ThrowTheSwitch/Unity) test framework.
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## Current State
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See [STATUS.md](STATUS.md). Currently, one is able to use `scl` as a basic,
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interactive, four-function calculator.
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## Syntax (Planned)
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As one would expect, you can evaluate simple infix expressions:
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```scl
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> 1 + 1
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= 2
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```
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You can also define your own functions:
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```scl
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> f(x) = 2x
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> f(2)
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= 4
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```
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Symbolic algebra is done in the following manner:
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```scl
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> f(x) = x^4
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> diff(f, x:sym, 2)
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= 12x^2
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```
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SCL will dynamically decide on types, but you can state them explicitly as
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well:
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```scl
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> f(x:int) = 2x
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> f(2.2)
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! f(x:int): x must be of type int.
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```
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Variables can be defined, with several attributes:
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```scl
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> a = 1 // Interpret type automatically.
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> b:int = 1 // Must be int.
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> c:const:int = 1 // Constant: value can never change.
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> x:sym // Treated symbolicaly.
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```
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