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diff --git a/examples/aarch64/add4-double.cc b/examples/aarch64/add4-double.cc
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+// Copyright 2014, VIXL authors
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+//
+//   * Redistributions of source code must retain the above copyright notice,
+//     this list of conditions and the following disclaimer.
+//   * Redistributions in binary form must reproduce the above copyright notice,
+//     this list of conditions and the following disclaimer in the documentation
+//     and/or other materials provided with the distribution.
+//   * Neither the name of ARM Limited nor the names of its contributors may be
+//     used to endorse or promote products derived from this software without
+//     specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS CONTRIBUTORS "AS IS" AND
+// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
+// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include "examples.h"
+
+#define __ masm->
+
+void GenerateAdd4Double(MacroAssembler* masm) {
+  // double Add4Double(uint64_t a, double b, uint64_t c, double d)
+  //  Argument locations:
+  //    a -> x0
+  //    b -> d0
+  //    c -> x1
+  //    d -> d1
+
+  // Turn 'a' and 'c' into double values.
+  __ Ucvtf(d2, x0);
+  __ Ucvtf(d3, x1);
+
+  // Add everything together.
+  __ Fadd(d0, d0, d1);
+  __ Fadd(d2, d2, d3);
+  __ Fadd(d0, d0, d2);
+
+  // The return value is in d0.
+  __ Ret();
+}
+
+
+#ifndef TEST_EXAMPLES
+#ifdef VIXL_INCLUDE_SIMULATOR
+int main(void) {
+  MacroAssembler masm;
+  Decoder decoder;
+  Simulator simulator(&decoder);
+
+  // Generate the code for the example function.
+  Label add4_double;
+  masm.Bind(&add4_double);
+  GenerateAdd4Double(&masm);
+  masm.FinalizeCode();
+
+  // Run the example function.
+  uint64_t a = 21;
+  double b = 987.3654;
+  uint64_t c = 4387;
+  double d = 36.698754;
+  simulator.WriteXRegister(0, a);
+  simulator.WriteDRegister(0, b);
+  simulator.WriteXRegister(1, c);
+  simulator.WriteDRegister(1, d);
+  simulator.RunFrom(masm.GetLabelAddress<Instruction*>(&add4_double));
+  // clang-format off
+  printf("%" PRIu64 " + %f + %" PRIu64 " + %f = %f\n",
+         a, b, c, d, simulator.ReadDRegister(0));
+  // clang-format on
+
+  return 0;
+}
+#else
+// Without the simulator there is nothing to test.
+int main(void) { return 0; }
+#endif  // VIXL_INCLUDE_SIMULATOR
+#endif  // TEST_EXAMPLES