[Jenkins] auto-formatting by clang-format version 6.0.0-1ubuntu2~16.04.1 (tags/RELEASE_600/final)

Author: stan-buildbot

stan/math/rev/core/init_chainablestack.hpp

@@ -20,7 +20,9 @@ namespace math {
  * hook ensures that each worker thread has an initialized AD tape
  * ready for use.
  *
- * Refer to https://software.intel.com/content/www/us/en/develop/documentation/tbb-documentation/top/intel-threading-building-blocks-developer-reference/task-scheduler/taskschedulerobserver.html for details on the observer concept.
+ * Refer to
+ * https://software.intel.com/content/www/us/en/develop/documentation/tbb-documentation/top/intel-threading-building-blocks-developer-reference/task-scheduler/taskschedulerobserver.html
+ * for details on the observer concept.
  */
 class ad_tape_observer final : public tbb::task_scheduler_observer {
   using stack_ptr = std::unique_ptr<ChainableStack>;

stan/math/rev/functor/map_rect_concurrent.hpp

@@ -51,7 +51,7 @@ map_rect_concurrent(
   // not being modified from a different task which may happen
   // whenever this function is being used itself in a parallel
   // context (like running multiple chains for Stan)
-  tbb::this_task_arena::isolate( [&]{
+  tbb::this_task_arena::isolate([&] {
     tbb::parallel_for(tbb::blocked_range<std::size_t>(0, num_jobs),
                       [&](const tbb::blocked_range<size_t>& r) {
                         execute_chunk(r.begin(), r.end());

stan/math/rev/functor/reduce_sum.hpp

@@ -256,7 +256,7 @@ struct reduce_sum_impl<ReduceFunction, require_var_t<ReturnType>, ReturnType,
     // not being modified from a different task which may happen
     // whenever this function is being used itself in a parallel
     // context (like running multiple chains for Stan)
-    tbb::this_task_arena::isolate( [&]{
+    tbb::this_task_arena::isolate([&] {
       if (auto_partitioning) {
         tbb::parallel_reduce(
             tbb::blocked_range<std::size_t>(0, num_terms, grainsize), worker);