Initial commit

.gitignore

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+/target

Cargo.lock

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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
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Cargo.toml

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+[package]
+name = "mathematical"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+num = "0.4.3"

src/lib.rs

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+pub mod math;

src/math/matrix.rs

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+use num::{Integer, Num};
+
+pub struct Matrix<T: Num + Copy> {
+    width: usize, height: usize,
+    data: Box<Vec<T>>
+}
+
+impl<T: Num + Copy> Matrix<T> {
+    pub fn new(width: usize, data: Vec<T>) -> Self {
+        if width == 0 {
+            panic!("Matrix width must not be 0")
+        }
+        let (height, append_zeroes) = data.len().div_rem(&width);
+        let mut matrix = Self { width, height, data: Box::new(data) };
+        if append_zeroes == 0 { return matrix; }
+        matrix.height += 1;
+        for _ in 0..append_zeroes {
+            matrix.data.push(T::zero());
+        }
+        return matrix;
+    }
+
+    pub fn new_filled(val: T, width: usize, height: usize) -> Self {
+        let Some(size) = width.checked_mul(height)
+        else {
+            panic!("Total matrix size for width {} and height {} exceeds usize limit", width, height)
+        };
+        if size < 2 {
+            panic!("Total matrix size must be greater than 1, but got {}", size)
+        }
+        let data = Box::new(vec![val; size]);
+        Self { width, height, data }
+    }
+
+    pub fn new_zeroes(width: usize, height: usize) -> Self {
+        Self::new_filled(T::zero(), width, height)
+    }
+
+    pub fn width(&self) -> usize {
+        self.width
+    }
+
+    pub fn height(&self) -> usize {
+        self.height
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    #[should_panic]
+    fn size_too_big() {
+        Matrix::<i32>::new_zeroes(usize::MAX, 2);
+    }
+
+    #[test]
+    #[should_panic]
+    fn size_too_small() {
+        Matrix::<i32>::new_zeroes(1, 1);
+    }
+}

src/math/mod.rs

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+pub mod matrix;