refactor: use blas/tools/swap-factory

Author: kgryte

lib/node_modules/@stdlib/blas/dswap/lib/main.js

@@ -20,25 +20,17 @@
 
 // MODULES //
 
-var isFloat64ndarrayLike = require( '@stdlib/assert/is-float64ndarray-like' );
-var isNegativeInteger = require( '@stdlib/assert/is-negative-integer' ).isPrimitive;
-var isReadOnly = require( '@stdlib/ndarray/base/assert/is-read-only' );
-var hasEqualValues = require( '@stdlib/array/base/assert/has-equal-values-indexed' );
-var min = require( '@stdlib/math/base/special/fast/min' );
-var without = require( '@stdlib/array/base/without' );
-var ndarraylike2ndarray = require( '@stdlib/ndarray/base/ndarraylike2ndarray' );
-var normalizeIndex = require( '@stdlib/ndarray/base/normalize-index' );
-var nditerStacks = require( '@stdlib/ndarray/iter/stacks' );
-var numel = require( '@stdlib/ndarray/base/numel' );
 var base = require( '@stdlib/blas/base/dswap' ).ndarray;
-var format = require( '@stdlib/string/format' );
+var factory = require( '@stdlib/blas/tools/swap-factory' );
 
 
 // MAIN //
 
 /**
 * Interchanges two double-precision floating-point vectors.
 *
+* @name dswap
+* @type {Function}
 * @param {ndarrayLike} x - first input array
 * @param {ndarrayLike} y - second input array
 * @param {NegativeInteger} [dim] - dimension along which to interchange elements
@@ -66,86 +58,7 @@ var format = require( '@stdlib/string/format' );
 * var ybuf = y.data;
 * // returns <Float64Array>[ 4.0, 2.0, -3.0, 5.0, -1.0 ]
 */
-function dswap( x, y ) {
-	var dim;
-	var xsh;
-	var ysh;
-	var xit;
-	var yit;
-	var xc;
-	var yc;
-	var vx;
-	var vy;
-	var dm;
-	var S;
-	var N;
-	var i;
-	if ( !isFloat64ndarrayLike( x ) ) {
-		throw new TypeError( format( 'invalid argument. First argument must be an ndarray containing double-precision floating-point numbers. Value: `%s`.', x ) );
-	}
-	if ( !isFloat64ndarrayLike( y ) ) {
-		throw new TypeError( format( 'invalid argument. Second argument must be an ndarray containing double-precision floating-point numbers. Value: `%s`.', y ) );
-	}
-	if ( isReadOnly( x ) || isReadOnly( y ) ) {
-		throw new Error( 'invalid argument. Cannot write to read-only array.' );
-	}
-	// Convert the input arrays to "base" ndarrays:
-	xc = ndarraylike2ndarray( x );
-	yc = ndarraylike2ndarray( y );
-
-	// Resolve the input array shapes:
-	xsh = xc.shape;
-	ysh = yc.shape;
-
-	// Validate that we've been provided non-zero-dimensional arrays...
-	if ( xsh.length < 1 ) {
-		throw new TypeError( format( 'invalid argument. First argument must have at least one dimension.' ) );
-	}
-	if ( ysh.length < 1 ) {
-		throw new TypeError( format( 'invalid argument. Second argument must have at least one dimension.' ) );
-	}
-	// Validate that the arrays have the same shape...
-	if ( !hasEqualValues( xsh, ysh ) ) {
-		throw new Error( 'invalid arguments. The first and second arguments must have the same shape.' );
-	}
-	// Validate that the dimension argument is a negative integer...
-	if ( arguments.length > 2 ) {
-		dim = arguments[ 2 ];
-		if ( !isNegativeInteger( dim ) ) {
-			throw new TypeError( format( 'invalid argument. Third argument must be a negative integer. Value: `%s`.', dim ) );
-		}
-	} else {
-		dim = -1;
-	}
-	// Validate that a provided dimension index is within bounds...
-	dm = min( xsh.length, ysh.length ) - 1;
-	dim = normalizeIndex( dim, dm );
-	if ( dim === -1 ) {
-		throw new RangeError( format( 'invalid argument. Third argument must be a value on the interval: [%d,%d]. Value: `%d`.', -dm, -1, arguments[ 2 ] ) );
-	}
-	// Resolve the size of the interchange dimension:
-	S = xsh[ dim ];
-
-	// If we are only provided one-dimensional input arrays, we can skip iterating over stacks...
-	if ( xsh.length === 1 ) {
-		base( S, xc.data, xc.strides[0], xc.offset, yc.data, yc.strides[0], yc.offset ); // eslint-disable-line max-len
-		return y;
-	}
-	// Resolve the number of stacks:
-	N = numel( without( xsh, dim ) );
-
-	// Create iterators for iterating over stacks of vectors:
-	xit = nditerStacks( xc, [ dim ] );
-	yit = nditerStacks( yc, [ dim ] );
-
-	// Interchange each pair of vectors...
-	for ( i = 0; i < N; i++ ) {
-		vx = xit.next().value;
-		vy = yit.next().value;
-		base( S, vx.data, vx.strides[0], vx.offset, vy.data, vy.strides[0], vy.offset ); // eslint-disable-line max-len
-	}
-	return y;
-}
+var dswap = factory( base, 'float64' );
 
 
 // EXPORTS //