diff --git a/test/libc/intrin/memmove_test.c b/test/libc/intrin/memmove_test.c
index 33b2ea6ad..701ef044a 100644
--- a/test/libc/intrin/memmove_test.c
+++ b/test/libc/intrin/memmove_test.c
@@ -19,11 +19,9 @@
 #include "libc/macros.internal.h"
 #include "libc/mem/gc.h"
 #include "libc/mem/mem.h"
-#include "libc/nexgen32e/nexgen32e.h"
 #include "libc/runtime/runtime.h"
 #include "libc/runtime/sysconf.h"
 #include "libc/stdio/rand.h"
-#include "libc/stdio/stdio.h"
 #include "libc/str/str.h"
 #include "libc/sysv/consts/map.h"
 #include "libc/sysv/consts/prot.h"
diff --git a/tool/emacs/cosmo-c-builtins.el b/tool/emacs/cosmo-c-builtins.el
index eb0362b18..4ed0d39b3 100644
--- a/tool/emacs/cosmo-c-builtins.el
+++ b/tool/emacs/cosmo-c-builtins.el
@@ -191,7 +191,14 @@
            "__is_same"))
 
         (cuda-builtin-types
-         '("__syncthreads"))
+         '("__syncthreads"
+           "__shfl"
+           "__shfl_xor"
+           "__shfl_sync"
+           "__shfl_down"
+           "__shfl_up_sync"
+           "__shfl_down_sync"
+           "__shfl_xor_sync"))
 
         (cosmopolitan-builtin-defines
          '("COSMOPOLITAN_CXX_START_"
diff --git a/tool/emacs/cosmo-cpp-constants.el b/tool/emacs/cosmo-cpp-constants.el
index 010ab7127..e028b685e 100644
--- a/tool/emacs/cosmo-cpp-constants.el
+++ b/tool/emacs/cosmo-cpp-constants.el
@@ -16,6 +16,7 @@
     "__GNUC_PATCHLEVEL__"
     "__GNUC__"
     "__APPLE__"
+    "__linux__"
     "__HAIKU__"
     "__CYGWIN__"
     "__EMSCRIPTEN__"
@@ -187,7 +188,23 @@
     "_GNU_SOURCE"
     "_BSD_SOURCE"
     "_COSMO_SOURCE"
-    "_XOPEN_SOURCE"))
+    "_XOPEN_SOURCE"
+    "__FLT16_HAS_QUIET_NAN__"
+    "__FLT16_DIG__"
+    "__FLT16_MIN_EXP__"
+    "__FLT16_MAX_10_EXP__"
+    "__FLT16_DECIMAL_DIG__"
+    "__FLT16_DENORM_MIN__"
+    "__FLT16_MIN_10_EXP__"
+    "__FLT16_IS_IEC_60559__"
+    "__FLT16_MAX_EXP__"
+    "__FLT16_EPSILON__"
+    "__FLT16_NORM_MAX__"
+    "__FLT16_MAX__"
+    "__FLT16_HAS_INFINITY__"
+    "__FLT16_MANT_DIG__"
+    "__FLT16_MIN__"
+    "__FLT16_HAS_DENORM__"))
 
 (defconst cosmo-cpp-constants-cosmopolitan
  '("__SAUCE__"