Add signMask getter to Float32x4

runtime/lib/simd128.cc

 // 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.
 
 #include "vm/bootstrap_natives.h"
 
 #include "vm/exceptions.h"
 #include "vm/native_entry.h"
 #include "vm/object.h"
 #include "vm/symbols.h"
@@ skipping 211 matching lines @@
 }
 
 
 DEFINE_NATIVE_ENTRY(Float32x4_getW, 1) {
   GET_NON_NULL_NATIVE_ARGUMENT(Float32x4, self, arguments->NativeArgAt(0));
   double value = static_cast<double>(self.w());
   return Double::New(value);
 }
 
 
+DEFINE_NATIVE_ENTRY(Float32x4_getSignMask, 1) {
+  GET_NON_NULL_NATIVE_ARGUMENT(Float32x4, self, arguments->NativeArgAt(0));
+  uint32_t mx = (bit_cast<uint32_t>(self.x()) & 0x80000000) >> 31;
+  uint32_t my = (bit_cast<uint32_t>(self.y()) & 0x80000000) >> 31;
+  uint32_t mz = (bit_cast<uint32_t>(self.z()) & 0x80000000) >> 31;
+  uint32_t mw = (bit_cast<uint32_t>(self.w()) & 0x80000000) >> 31;
+  uint32_t value = mx | (my << 1) | (mz << 2) | (mw << 3);
+  return Integer::New(value);
+}
+
+
+DEFINE_NATIVE_ENTRY(Uint32x4_getSignMask, 1) {
+  GET_NON_NULL_NATIVE_ARGUMENT(Uint32x4, self, arguments->NativeArgAt(0));
+  uint32_t mx = (self.x() & 0x80000000) >> 31;
+  uint32_t my = (self.y() & 0x80000000) >> 31;
+  uint32_t mz = (self.z() & 0x80000000) >> 31;
+  uint32_t mw = (self.w() & 0x80000000) >> 31;
+  uint32_t value = mx | (my << 1) | (mz << 2) | (mw << 3);
+  return Integer::New(value);
+}
+
+
 DEFINE_NATIVE_ENTRY(Float32x4_shuffle, 2) {
   GET_NON_NULL_NATIVE_ARGUMENT(Float32x4, self, arguments->NativeArgAt(0));
   GET_NON_NULL_NATIVE_ARGUMENT(Integer, mask, arguments->NativeArgAt(1));
   int64_t m = mask.AsInt64Value();
   if (m < 0 || m > 255) {
     const String& error = String::Handle(
       String::NewFormatted("mask (%"Pd64") must be in the range [0..256)", m));
     const Array& args = Array::Handle(Array::New(1));
     args.SetAt(0, error);
     Exceptions::ThrowByType(Exceptions::kRange, args);
@@ skipping 417 matching lines @@
 }
 
 
 DEFINE_NATIVE_ENTRY(Uint32x4_toFloat32x4, 1) {
   GET_NON_NULL_NATIVE_ARGUMENT(Uint32x4, v, arguments->NativeArgAt(0));
   return Float32x4::New(v.value());
 }
 
 
 }  // namespace dart