Test if an input value is a supported input ndarray casting policy.
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> Test if an input value is a supported input ndarray casting [policy][@stdlib/ndarray/input-casting-policies].
``bash`
npm install @stdlib/ndarray-base-assert-is-input-casting-policy
`javascript`
var isInputCastingPolicy = require( '@stdlib/ndarray-base-assert-is-input-casting-policy' );
#### isInputCastingPolicy( value )
Tests if an input value is a supported input ndarray casting [policy][@stdlib/ndarray/input-casting-policies].
`javascript
var bool = isInputCastingPolicy( 'none' );
// returns true
bool = isInputCastingPolicy( 'foo' );
// returns false
`
`javascript
var isInputCastingPolicy = require( '@stdlib/ndarray-base-assert-is-input-casting-policy' );
var bool = isInputCastingPolicy( 'none' );
// returns true
bool = isInputCastingPolicy( 'promoted' );
// returns true
bool = isInputCastingPolicy( 'output' );
// returns true
bool = isInputCastingPolicy( '' );
// returns false
bool = isInputCastingPolicy( 'foo' );
// returns false
`
*
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[@stdlib/ndarray/input-casting-policies]: https://www.npmjs.com/package/@stdlib/ndarray-input-casting-policies