Trait SumFromStorage

Source

pub trait SumFromStorage: Sized {
    // Required method
    fn sum_from_storage(storage: &Storage) -> Self;
}

Expand description

Types that can be computed as the result of a reduction over Storage.

This lets callers write let s: T = tensor.sum(); without matching on the storage variant. Implemented for f64, Complex64, f32, and Complex32; every reduction widens compact payload values to the requested accumulator, so a narrow payload can be summed without changing its stored dtype.

§Examples

use tensor4all_tensorbackend::{Storage, SumFromStorage};

let s = Storage::from_dense_col_major(vec![1.0_f64, 2.0, 3.0], &[3]).unwrap();
let total: f64 = f64::sum_from_storage(&s);
assert!((total - 6.0).abs() < 1e-10);

let narrow = Storage::from_dense_col_major(vec![1.0_f32, 2.0], &[2]).unwrap();
assert_eq!(f32::sum_from_storage(&narrow), 3.0_f32);
assert_eq!(f64::sum_from_storage(&narrow), 3.0_f64);