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#![feature(array_methods)]
#![feature(array_map)]
#![cfg_attr(not(feature = "std"), no_std)]
#![allow(dead_code)]
mod dimutils;
pub mod broadcast;
#[cfg(test)]
mod tests {
use crate::dimutils::*;
use crate::broadcast::*;
fn linear_iter_test<const N : usize>(size:[usize;N]) {
let index_coeffs = linearization_coeffs(size);
let indices = ndim_iterator(size);
for (i,index) in indices.enumerate() {
let lin_index = linearize_index(index,index_coeffs);
assert_eq!(i,lin_index);
assert_eq!(delinearize_index(lin_index,size),index);
}
}
#[test]
fn linearization() {
linear_iter_test([3,3]);
linear_iter_test([3,4]);
linear_iter_test([3,2,4,2]);
assert_eq!(linearization_coeffs([4]), [1]);
assert_eq!(linearization_coeffs([4,3]), [1,4]);
let mut a = ndim_iterator([3,4]);
let mut b = ndim_iterator([3,4]);
b.next();
b.next();
assert_eq!(a.nth(2),b.next())
}
#[test]
fn it_works() {
let v = vec![1,2,3];
let u = vec![2,2,2];
let bv = (v).lazy_updim([3,4]).into_iter().collect::<Vec<i64>>();
let vdotu : i64 = u.broadcast2(&v).bmap(|(x,y)|x*y).iter().sum();
assert_eq!(vdotu,1*2 + 2*2 + 3*2);
println!("The elems of bv are {:?}",bv);
for x in &bv {
println!("{}",x);
}
assert_eq!(2 + 2, 4);
}
}