feat: add accumulation input casting policy

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Author: kgryte

lib/node_modules/@stdlib/ndarray/input-casting-policies/README.md

@@ -53,6 +53,7 @@ The output array contains the following policies:
 
 -   `none`: do not cast an input ndarray.
 -   `promoted`: cast an input ndarray to a promoted data type.
+-   `accumulation`: cast an input ndarray to a data type amenable to accumulation.
 -   `output`: cast an input ndarray to the data type of the output ndarray.
 
 </section>

lib/node_modules/@stdlib/ndarray/input-casting-policies/docs/repl.txt

@@ -6,6 +6,8 @@
 
     - none: do not cast an input ndarray.
     - promoted: cast an input ndarray to a promoted data type.
+    - accumulation: cast an input ndarray to a data type amenable to
+    accumulation.
     - output: cast an input ndarray to the data type of the output ndarray.
 
     Returns

lib/node_modules/@stdlib/ndarray/input-casting-policies/docs/types/index.d.ts

@@ -24,6 +24,7 @@
 type Policies = [
 	'none',
 	'promoted',
+	'accumulation',
 	'output'
 ];
 
@@ -36,6 +37,7 @@ type Policies = [
 *
 *     -   `none`: do not cast an input ndarray.
 *     -   `promoted`: cast an input ndarray to a promoted data type.
+*     -   `accumulation`: cast an input ndarray to a data type amenable to accumulation.
 *     -   `output`: cast an input ndarray to the data type of the output ndarray.
 *
 * @returns list of policies

lib/node_modules/@stdlib/ndarray/input-casting-policies/include/stdlib/ndarray/input_casting_policies.h

@@ -36,6 +36,9 @@ enum STDLIB_NDARRAY_INPUT_CASTING_POLICY {
 	// Cast an input ndarray to a promoted data type:
 	STDLIB_NDARRAY_INPUT_CASTING_POLICY_PROMOTED,
 
+	// Cast an input ndarray to a data type amenable to accumulation:
+	STDLIB_NDARRAY_INPUT_CASTING_POLICY_ACCUMULATION,
+
 	// Cast an input ndarray to the data type of the output ndarray:
 	STDLIB_NDARRAY_INPUT_CASTING_POLICY_OUTPUT,
 

lib/node_modules/@stdlib/ndarray/input-casting-policies/lib/enum.js

@@ -40,7 +40,8 @@ function enumeration() {
 	return {
 		'none': 0,
 		'promoted': 1,
-		'output': 2
+		'accumulation': 2,
+		'output': 3
 	};
 }
 

lib/node_modules/@stdlib/ndarray/input-casting-policies/lib/policies.json

@@ -1,5 +1,6 @@
 [
   "none",
   "promoted",
+  "accumulation",
   "output"
 ]

lib/node_modules/@stdlib/ndarray/input-casting-policies/test/test.js

@@ -32,6 +32,7 @@ var policies = require( './../lib' );
 var POLICIES = [
 	'none',
 	'promoted',
+	'accumulation',
 	'output'
 ];