Documentation overview

Meet Sun

An experimental scientific programming language built in Rust, with matrix-first computing and 1-based indexing.

Rust coreMatrix-first1-based indexingExperimental
01

What is Sun?

Sun is an experimental language for numerical and matrix-oriented programs. Its syntax is familiar to MATLAB users, while its implementation is written in Rust.

The repository contains a lexer, parser, interpreter, persistent sessions, matrix primitives, hosted graphics, and a developing LLVM backend. Interpreter and native coverage are intentionally not presented as equivalent.

02

A first program

This example is used in the repository quick start and exercises scalar precedence, matrix multiplication, and element-wise multiplication.

Sun
% Scalar and matrix operations
x = 2 + 3 * 4;
A = [1, 2; 3, 4];
B = A * A;
C = A .* A;
disp(x);
disp(B);
disp(C);
03

Implementation status

Sun is an early bootstrap rather than a complete MATLAB replacement. The interpreter is the broadest execution path. Native compilation supports a deliberately smaller numeric subset.

Source note

Content was audited against repository commit 573102b. Main can move after this snapshot.

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LanguageBasic syntaxAssignments, comments, strings, blocks, and output behavior.ReferenceBuilt-in functionsSearch and filter the built-in functions documented for the Sun interpreter.Language referenceMatrices and indexingMatrix literals, 1-based indexing, ranges, slices, and shape inspection.Language referenceControl flowConditional branches, loops, selection, and script returns.RuntimeInterpreter and LLVMChoose the execution path that matches the feature set you use.ReferenceIdentifier catalogA searchable map of keywords, literals, built-ins, constants, operators, and symbols.