rssn 0.2.9

A comprehensive scientific computing library for Rust, aiming for feature parity with NumPy and SymPy.
Documentation 
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use crate::symbolic::tensor::Tensor;

/// Performs tensor addition.
/// Takes raw pointers to two `Tensor` objects as input,
/// and returns a raw pointer to a new `Tensor` representing their sum.
#[unsafe(no_mangle)]
pub extern "C" fn rssn_tensor_add_handle(
    t1: *const Tensor,
    t2: *const Tensor,
) -> *mut Tensor {
    let t1_ref = unsafe { &*t1 };

    let t2_ref = unsafe { &*t2 };

    match t1_ref.add(t2_ref) {
        | Ok(result) => Box::into_raw(Box::new(result)),
        | Err(_) => std::ptr::null_mut(),
    }
}

/// Performs scalar multiplication on a tensor.
/// Takes a raw pointer to a `Tensor` and a raw pointer to an `Expr` (scalar).
/// Returns a raw pointer to a new `Tensor` representing the result.
#[unsafe(no_mangle)]
pub extern "C" fn rssn_tensor_scalar_mul_handle(
    t: *const Tensor,
    scalar: *const crate::symbolic::core::Expr,
) -> *mut Tensor {
    let t_ref = unsafe { &*t };

    let scalar_ref = unsafe { &*scalar };

    match t_ref.scalar_mul(scalar_ref) {
        | Ok(result) => Box::into_raw(Box::new(result)),
        | Err(_) => std::ptr::null_mut(),
    }
}

/// Computes the outer product of two tensors.
/// Takes raw pointers to two `Tensor` objects as input,
/// and returns a raw pointer to a new `Tensor` representing their outer product.
#[unsafe(no_mangle)]
pub extern "C" fn rssn_tensor_outer_product_handle(
    t1: *const Tensor,
    t2: *const Tensor,
) -> *mut Tensor {
    let t1_ref = unsafe { &*t1 };

    let t2_ref = unsafe { &*t2 };

    match t1_ref.outer_product(t2_ref) {
        | Ok(result) => Box::into_raw(Box::new(result)),
        | Err(_) => std::ptr::null_mut(),
    }
}

/// Performs tensor contraction.
/// Takes a raw pointer to a `Tensor`, and two `usize` values representing the axes to contract.
/// Returns a raw pointer to a new `Tensor` representing the contracted tensor.
#[unsafe(no_mangle)]
pub extern "C" fn rssn_tensor_contract_handle(
    t: *const Tensor,
    axis1: usize,
    axis2: usize,
) -> *mut Tensor {
    let t_ref = unsafe { &*t };

    match t_ref.contract(axis1, axis2) {
        | Ok(result) => Box::into_raw(Box::new(result)),
        | Err(_) => std::ptr::null_mut(),
    }
}