Based on the analysis of array library APIs, we know that performing element-wise arithmetic operations is both universally implemented and commonly used. Accordingly, this issue proposes to standardize the following arithmetic operations:

Arithmetic Operations

• add
• subtract
• multiply (mul)
• divide (div)

Criterion

1. Commonly implemented across array libraries.
2. Commonly used by array library consumers.
3. Operates on two arrays.

Questions

1. Naming conventions? Currently, this proposal is biased toward verbose API names following NumPy.
2. Are there any APIs listed above which should not be standardized?
3. Are there basic arithmetic operations not listed above which should be standardized? Preferably, any additions should be supported by usage data.