fix: fix reverse logic

Author: ahmad-kashkoush

lib/node_modules/@stdlib/array/fixed-endian-factory/lib/main.js

@@ -44,6 +44,7 @@ var contains = require( '@stdlib/array/base/assert/contains' ).factory;
 var bytesPerElement = require( '@stdlib/ndarray/base/bytes-per-element' );
 var capitalize = require( '@stdlib/string/base/capitalize' );
 var format = require( '@stdlib/string/format' );
+var floor = require( '@stdlib/math/base/special/floor' );
 var fromIterator = require( './from_iterator.js' );
 var fromIteratorMap = require( './from_iterator_map.js' );
 
@@ -699,14 +700,12 @@ function factory( dtype ) { // eslint-disable-line max-lines-per-function, stdli
 		}
 		buf = this._buffer;
 		len = this._length;
-
-		// Compute floor of len / 2
-		N = ( ( len + 1 ) / 2 * 2 ) - ( len % 2 );
+		N = floor(len / 2);
 		for ( i = 0; i < N; i++ ) {
 			j=len-i-1;
-			tmp=buf[i];
-			buf[i]=buf[j];
-			buf[j]=tmp;
+			tmp=buf[ GETTER ]( i*BYTES_PER_ELEMENT, this._isLE );
+			buf[ SETTER ]( i*BYTES_PER_ELEMENT, buf[ GETTER ]( j*BYTES_PER_ELEMENT, this._isLE ), this._isLE );
+			buf[ SETTER ]( j*BYTES_PER_ELEMENT, tmp, this._isLE );
 		}
 		return this;
 	});