fixes

examples_ptx/ispc_malloc.h

@@ -0,0 +1,17 @@
+#pragma once
+
+#ifdef _CUDA_
+extern void ispc_malloc(void **ptr, const size_t size);
+extern void ispc_free(void *ptr);
+#else
+#include <cstdlib>
+static inline void ispc_malloc(void **ptr, const size_t size)
+{
+  *ptr = malloc(size);
+}
+static inline void ispc_free(void *ptr)
+{
+  free(ptr);
+}
+
+#endif