Simd128Float32, Simd128Mask, and Simd128Float32List additions for dart:scalarlist

sdk/lib/scalarlist/byte_arrays.dart

Index: sdk/lib/scalarlist/byte_arrays.dart
diff --git a/sdk/lib/scalarlist/byte_arrays.dart b/sdk/lib/scalarlist/byte_arrays.dart
index d8432593bc5aed6fed0f11509b46576f451562bc..09848539eb36411ea9b222541f4341ad7eb1055d 100644
--- a/sdk/lib/scalarlist/byte_arrays.dart
+++ b/sdk/lib/scalarlist/byte_arrays.dart
@@ -269,6 +269,30 @@ abstract class ByteArray {
   int setUint64(int byteOffset, int value);
 
   /**
+   * Returns the Simd128Float32x4  number represented by the 16 bytes at
+   * the specified [byteOffset] in this byte array.
+   *
+   * Throws [RangeError] if [byteOffset] is negative, or
+   * `byteOffset + 16` is greater than the length of this byte array.
+   */
+  Simd128Float32x4 getSimd128Float32x4(int byteOffset);
+
+  /**
+   * Sets the sixteen bytes starting at the specified [byteOffset] in this
+   * byte array to the Simd128Float32 representation of the specified [value].
+   *
+   *
+   * Returns `byteOffset + 16`, which is the offset of the first byte in the
+   * array after the last byte that was set by this call. This return value can
+   * be passed as the [byteOffset] parameter to a subsequent `setXxx` call.
+   *
+   * Throws [RangeError] if [byteOffset] is negative, or
+   * `byteOffset + 16` is greater than the length of this byte array.
+   */
+  int setSimd128Float32x4(int byteOffset, Simd128Float32x4 value);
+
+
+  /**
    * Returns the floating point number represented by the four bytes at
    * the specified [byteOffset] in this byte array, in IEEE 754
    * single-precision binary floating-point format (binary32).