Add note concerning division by zero for integer dtypes (#311)

Author: kgryte

spec/API_specification/array_object.md

@@ -628,6 +628,10 @@ Converts a zero-dimensional floating-point array to a Python `float` object.
 
 Evaluates `self_i // other_i` for each element of an array instance with the respective element of the array `other`.
 
+```{note}
+For input arrays which promote to an integer data type, the result of division by zero is unspecified and thus implementation-defined.
+```
+
 #### Parameters
 
 -   **self**: _<array>_
@@ -903,6 +907,10 @@ The `matmul` function must implement the same semantics as the built-in `@` oper
 
 Evaluates `self_i % other_i` for each element of an array instance with the respective element of the array `other`.
 
+```{note}
+For input arrays which promote to an integer data type, the result of division by zero is unspecified and thus implementation-defined.
+```
+
 #### Parameters
 
 -   **self**: _<array>_

spec/API_specification/elementwise_functions.md

@@ -668,6 +668,10 @@ Rounds each element `x_i` of the input array `x` to the greatest (i.e., closest
 
 Rounds the result of dividing each element `x1_i` of the input array `x1` by the respective element `x2_i` of the input array `x2` to the greatest (i.e., closest to `+infinity`) integer-value number that is not greater than the division result.
 
+```{note}
+For input arrays which promote to an integer data type, the result of division by zero is unspecified and thus implementation-defined.
+```
+
 #### Parameters
 
 -   **x1**: _<array>_
@@ -1213,6 +1217,10 @@ For floating-point operands,
 
 Returns the remainder of division for each element `x1_i` of the input array `x1` and the respective element `x2_i` of the input array `x2`.
 
+```{note}
+For input arrays which promote to an integer data type, the result of division by zero is unspecified and thus implementation-defined.
+```
+
 #### Parameters
 
 -   **x1**: _<array>_