61 lines
1.0 KiB
Markdown
61 lines
1.0 KiB
Markdown
# SCL: Simple CAS Language
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## Usage
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```bash
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git clone https://git.signorovitch.org/jacob/scl && cd scl
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make release # Build.
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./scl # Run.
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```
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## Current State
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The following things are possible:
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1. Floating-point numbers
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2. Negative numbers
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3. Basic binary infix operators; +, -, \*, /
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4. The same as conventional functions; sum(), sub(), mul(), div()
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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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