LibTest/typed_data/Float32List/Float32List.view_A04_t01.dart

// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

/// @assertion
/// Float32List.view(
///     ByteBuffer buffer, [
///     int byteOffset = 0, int length
/// ])
/// ...
/// If the [offsetInBytes] index of the region is not specified, it defaults to
/// zero (the first byte in the byte buffer).
/// @description Checks that if the [offsetInBytes] is not specified, it defaults
/// to zero.
/// @author msyabro


import "dart:typed_data";
import "../../../Utils/expect.dart";

void check(List<double> array, int length) {
  double firstElement = array.first;
  double lastElement = array[length-1];
  var tmp = new Float32List.fromList(array);
  var byteBuffer = tmp.buffer;
  var l = new Float32List.view(byteBuffer);
  Expect.equals(length, l.length);
  Expect.equals(firstElement, l[0]);
  Expect.equals(lastElement, l[length - 1]);
}

main() {
  check([
    0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0, 11.0, 12.0,
    13.0, 14.0, 15.0, 16.0, 17.0
  ], 18);
  check([0.0], 1);
  check([100.0, 50.0], 2);
}