| 3 | use std::cmp::max; |
| 4 | |
| 5 | pub(super) fn broadcast_shapes(s1: ArrayShape, s2: ArrayShape) -> Result<ArrayShape> { |
| 6 | let result_length = max(s1.len(), s2.len()); |
| 7 | let offset1 = result_length - s1.len(); |
| 8 | let offset2 = result_length - s2.len(); |
| 9 | let mut result = vec![]; |
| 10 | for i in 0..result_length { |
| 11 | let mut value1 = 1; |
| 12 | if i >= offset1 { |
| 13 | value1 = s1[i - offset1]; |
| 14 | } |
| 15 | let mut value2 = 1; |
| 16 | if i >= offset2 { |
| 17 | value2 = s2[i - offset2]; |
| 18 | } |
| 19 | if value1 > 1 && value2 > 1 && value1 != value2 { |
| 20 | return Err(runtime_error!( |
| 21 | "Invalid broadcast: shapes {s1:?} and {s2:?}" |
| 22 | )); |
| 23 | } |
| 24 | result.push(max(value1, value2)); |
| 25 | } |
| 26 | Ok(result) |
| 27 | } |
| 28 | |
| 29 | fn broadcast_pair(t1: Type, t2: Type) -> Result<Type> { |
| 30 | if t1.get_scalar_type() != t2.get_scalar_type() { |