Replace NULL macros with nullptr literals.

Change-Id: I918c40879aa547438f77e7d1a95fa2aa33bec398
diff --git a/tests/cppallocation/Android.mk b/tests/cppallocation/Android.mk
index 2e46c9e..36ea7cb 100644
--- a/tests/cppallocation/Android.mk
+++ b/tests/cppallocation/Android.mk
@@ -11,6 +11,7 @@
 LOCAL_STATIC_LIBRARIES := \
 	libRScpp_static
 
+LOCAL_CFLAGS := -std=c++11
 LOCAL_LDFLAGS += -llog -ldl
 
 LOCAL_MODULE:= rstest-cppallocation
diff --git a/tests/cppbasic-getpointer/Android.mk b/tests/cppbasic-getpointer/Android.mk
index eb4ac34..b2222c6 100644
--- a/tests/cppbasic-getpointer/Android.mk
+++ b/tests/cppbasic-getpointer/Android.mk
@@ -15,6 +15,8 @@
 
 intermediates := $(call intermediates-dir-for,STATIC_LIBRARIES,libRS,TARGET,)
 
+LOCAL_CFLAGS := -std=c++11
+
 LOCAL_C_INCLUDES += external/stlport/stlport bionic/ bionic/libstdc++/include
 LOCAL_C_INCLUDES += frameworks/rs/cpp
 LOCAL_C_INCLUDES += frameworks/rs
diff --git a/tests/cppbasic-shared/Android.mk b/tests/cppbasic-shared/Android.mk
index 63cd715..34826a0 100644
--- a/tests/cppbasic-shared/Android.mk
+++ b/tests/cppbasic-shared/Android.mk
@@ -15,6 +15,8 @@
 
 intermediates := $(call intermediates-dir-for,STATIC_LIBRARIES,libRS,TARGET,)
 
+LOCAL_CFLAGS := -std=c++11
+
 LOCAL_C_INCLUDES += external/stlport/stlport bionic/ bionic/libstdc++/include
 LOCAL_C_INCLUDES += frameworks/rs/cpp
 LOCAL_C_INCLUDES += frameworks/rs
diff --git a/tests/cppbasic-shared/compute.cpp b/tests/cppbasic-shared/compute.cpp
index d93b453..6741d7a 100644
--- a/tests/cppbasic-shared/compute.cpp
+++ b/tests/cppbasic-shared/compute.cpp
@@ -42,7 +42,7 @@
         sc->set_elem(e);
         sc->set_type(t);
         sc->set_script(sc);
-        sc->set_script(NULL);
+        sc->set_script(nullptr);
         sp<const Sampler> samp = Sampler::CLAMP_NEAREST(rs);
         sc->set_sampler(samp);
 
diff --git a/tests/cppbasic/Android.mk b/tests/cppbasic/Android.mk
index d4f7441..9e24dca 100644
--- a/tests/cppbasic/Android.mk
+++ b/tests/cppbasic/Android.mk
@@ -11,6 +11,7 @@
 LOCAL_STATIC_LIBRARIES := \
 	libRScpp_static
 
+LOCAL_CFLAGS := -std=c++11
 LOCAL_LDFLAGS += -llog -ldl
 
 LOCAL_MODULE:= rstest-compute
diff --git a/tests/cppbasic/compute.cpp b/tests/cppbasic/compute.cpp
index d93b453..6741d7a 100644
--- a/tests/cppbasic/compute.cpp
+++ b/tests/cppbasic/compute.cpp
@@ -42,7 +42,7 @@
         sc->set_elem(e);
         sc->set_type(t);
         sc->set_script(sc);
-        sc->set_script(NULL);
+        sc->set_script(nullptr);
         sp<const Sampler> samp = Sampler::CLAMP_NEAREST(rs);
         sc->set_sampler(samp);
 
diff --git a/tests/cppstrided/Android.mk b/tests/cppstrided/Android.mk
index 9fb98a6..253a104 100644
--- a/tests/cppstrided/Android.mk
+++ b/tests/cppstrided/Android.mk
@@ -11,6 +11,7 @@
 LOCAL_STATIC_LIBRARIES := \
 	libRScpp_static
 
+LOCAL_CFLAGS := -std=c++11
 LOCAL_LDFLAGS += -llog -ldl
 
 LOCAL_MODULE:= rstest-cppstrided
diff --git a/tests/latency/Android.mk b/tests/latency/Android.mk
index fdfa208..5200e5d 100644
--- a/tests/latency/Android.mk
+++ b/tests/latency/Android.mk
@@ -11,6 +11,7 @@
 LOCAL_STATIC_LIBRARIES := \
 	libRScpp_static
 
+LOCAL_CFLAGS := -std=c++11
 LOCAL_LDFLAGS += -llog -ldl
 
 LOCAL_MODULE:= rstest-latency
diff --git a/tests/latency/latency.cpp b/tests/latency/latency.cpp
index 05337be..274a518 100644
--- a/tests/latency/latency.cpp
+++ b/tests/latency/latency.cpp
@@ -74,7 +74,7 @@
 
     struct timeval start, stop;
 
-    gettimeofday(&start, NULL);
+    gettimeofday(&start, nullptr);
 
     for (int i = 0; i < iters; i++) {
         sc->forEach_root(ain, aout);
@@ -82,13 +82,13 @@
 
     rs->finish();
 
-    gettimeofday(&stop, NULL);
+    gettimeofday(&stop, nullptr);
 
     long long elapsed = (stop.tv_sec * 1000000) - (start.tv_sec * 1000000) + (stop.tv_usec - start.tv_usec);
     printf("elapsed time : %lld microseconds\n", elapsed);
     printf("time per iter: %f microseconds\n", (double)elapsed / iters);
 
-    gettimeofday(&start, NULL);
+    gettimeofday(&start, nullptr);
 
     for (int i = 0; i < iters; i++) {
         ain->copy1DFrom(buf);
@@ -98,7 +98,7 @@
 
     rs->finish();
 
-    gettimeofday(&stop, NULL);
+    gettimeofday(&stop, nullptr);
     elapsed = (stop.tv_sec * 1000000) - (start.tv_sec * 1000000) + (stop.tv_usec - start.tv_usec);
     printf("elapsed time with copy : %lld microseconds\n", elapsed);
     printf("time per iter with copy: %f microseconds\n", (double)elapsed / iters);
diff --git a/tests/typecheck/Android.mk b/tests/typecheck/Android.mk
index c34e3e2..f63684e 100644
--- a/tests/typecheck/Android.mk
+++ b/tests/typecheck/Android.mk
@@ -11,6 +11,7 @@
 LOCAL_STATIC_LIBRARIES := \
 	libRScpp_static
 
+LOCAL_CFLAGS := -std=c++11
 LOCAL_LDFLAGS += -llog -ldl
 
 LOCAL_MODULE:= rstest-typecheck