https://github.com/yoyoengine/lilith

A crude linear algebra library, created for learning purposes and for use in yoyoengine.
https://github.com/yoyoengine/lilith

linear-algebra math matrix-multiplication

Last synced: about 1 month ago
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A crude linear algebra library, created for learning purposes and for use in yoyoengine.

• Host: GitHub
• URL: https://github.com/yoyoengine/lilith
• Owner: yoyoengine
• License: mit
• Created: 2024-12-14T03:32:09.000Z (about 1 month ago)
• Default Branch: main
• Last Pushed: 2024-12-14T20:01:28.000Z (about 1 month ago)
• Last Synced: 2024-12-14T20:25:47.873Z (about 1 month ago)
• Topics: linear-algebra, math, matrix-multiplication
• Language: C
• Homepage:
• Size: 12.7 KB
• Stars: 1
• Watchers: 0
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Lilith Linear Algebra

A super simple linear algebra library created for use with [yoyoengine](https://github.com/yoyoengine).

No gaurantees are made for correctness or optimization, I rolled this myself for fun and to learn.

![Evangelion Reference](https://static.wikia.nocookie.net/evangelion/images/9/99/Lilith_with_Lance.png/revision/latest/thumbnail/width/360/height/360?cb=20120210032404)

## Features

- 3x3 matrix operations

- 2D vector operations

## Example

```c

#include 

int main() {

    mat3_t identity = lla_mat3_identity();

    mat3_t scale = lla_mat3_scale(identity, 2.0f);

    mat3_t test = lla_mat3(10.0f, 80.0f, 4.0f, 5.0f, 78.0f, 9.0f, 47.0f, 9.0f, 5.0f);

    mat3_t result = lla_mat3_mult(scale, test);

    const char* res_str = lla_mat3_string(result);

    printf("%s\n", res_str);

    free((void*)res_str);

    /*

        Output:

        [20.000000, 160.000000, 8.000000]

        [10.000000, 156.000000, 18.000000]

        [94.000000, 18.000000, 10.000000]

    */

}

```

## Todo

- vec3 and appropriate mult funcs?

- row/col extraction?

- unit tests?