Add 64-bit unsigned type

demod/mod/demod_mod.h

@@ -17,6 +17,7 @@
 typedef unsigned char  ui8_t;
 typedef unsigned short ui16_t;
 typedef unsigned int   ui32_t;
+typedef unsigned long long ui64_t;
 typedef char  i8_t;
 typedef short i16_t;
 typedef int   i32_t;