diff --git a/CMakeLists.txt b/CMakeLists.txt
index ca807e35..8c6a6771 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -82,7 +82,7 @@ list(INSERT CMAKE_MODULE_PATH 0 ${CMAKE_SOURCE_DIR}/cmake/Modules)
 # Set the version information here
 set(VERSION_MAJOR 0)
 set(VERSION_API   3)
-set(VERSION_ABI   3)
+set(VERSION_ABI   4)
 set(VERSION_PATCH git)
 
 cmake_policy(SET CMP0011 NEW)
@@ -111,21 +111,21 @@ ELSE()
 ENDIF()
 
 IF(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
-    SET(CMAKE_CXX_STANDARD 17)
+    SET(CMAKE_CXX_STANDARD 23)
 ELSEIF(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
-    SET(CMAKE_CXX_STANDARD 17)
+    SET(CMAKE_CXX_STANDARD 23)
 ELSEIF(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
-    SET(CMAKE_CXX_STANDARD 17)
+    SET(CMAKE_CXX_STANDARD 23)
 ELSE()
     message(WARNING "C++ standard could not be set because compiler is not GNU, Clang or MSVC.")
 ENDIF()
 
 IF(CMAKE_C_COMPILER_ID STREQUAL "GNU")
-    SET(CMAKE_C_STANDARD 17)
+    SET(CMAKE_C_STANDARD 11)
 ELSEIF(CMAKE_C_COMPILER_ID MATCHES "Clang")
-    SET(CMAKE_C_STANDARD 17)
+    SET(CMAKE_C_STANDARD 11)
 ELSEIF(CMAKE_C_COMPILER_ID STREQUAL "MSVC")
-    SET(CMAKE_C_STANDARD 17)
+    SET(CMAKE_C_STANDARD 11)
 ELSE()
     message(WARNING "C standard could not be set because compiler is not GNU, Clang or MSVC.")
 ENDIF()
diff --git a/lib/helpers.cc b/lib/helpers.cc
index 22ea4765..dba1908b 100644
--- a/lib/helpers.cc
+++ b/lib/helpers.cc
@@ -42,7 +42,7 @@ double double_mod(double a, long b) { return fmod(fmod(a, b) + b, b); }
  * @param n_bits The output number of bits
  * @return std::vector<bool>
  */
-std::vector<bool> int2bool(uint integer, uint8_t n_bits) {
+std::vector<bool> int2bool(uint8_t integer, uint8_t n_bits) {
   std::vector<bool> vec(n_bits, 0);
   int j = n_bits;
   for (int i = 0; i < n_bits; i++) {
@@ -147,7 +147,7 @@ uint32_t bool2int(std::vector<bool> b) {
  */
 void build_ref_chirps(gr_complex *upchirp, gr_complex *downchirp, uint8_t sf) {
   double N = (1 << sf);
-  for (uint n = 0; n < N; n++) {
+  for (uint16_t n = 0; n < N; n++) {
     // the scaling factor of 0.9 is here to avoid to saturate the USRP_SINK
     // gr_expj is the phase of the angle of the complex exponential and returns
     // and real and imag part by gr_sincosf(phase, &t_imag, &t_real);
@@ -168,7 +168,7 @@ void build_ref_chirps(gr_complex *upchirp, gr_complex *downchirp, uint8_t sf) {
 void build_upchirp(gr_complex *chirp, uint32_t id, uint8_t sf) {
   double N = 1 << sf;
   // procces all samples
-  for (uint n = 0; n < N; n++) {
+  for (uint16_t n = 0; n < N; n++) {
     // the scaling factor of 0.9 is here to avoid to saturate the USRP_SINK
     chirp[n] = gr_complex(0.9f, 0.0f) *
                gr_expj(2.0 * M_PI * (n * n / (2 * N) + (id / N - 0.5) * n));
@@ -178,7 +178,7 @@ void build_upchirp(gr_complex *chirp, uint32_t id, uint8_t sf) {
 void build_upchirp_os_factor(gr_complex* chirp, uint32_t id, uint8_t sf, uint8_t os_factor = 1){
             double N = (1 << sf)  ;
             int n_fold = N* os_factor - id*os_factor;
-            for(uint n = 0; n < N* os_factor; n++){
+            for(uint16_t n = 0; n < N* os_factor; n++){
                 if(n<n_fold)
                     chirp[n] = gr_complex(1.0,0.0)*gr_expj(2.0*M_PI *(n*n/(2*N)/pow(os_factor,2)+(id/N-0.5)*n/os_factor));
                 else
diff --git a/lib/helpers.h b/lib/helpers.h
index d5b2f5a9..871fc5b3 100644
--- a/lib/helpers.h
+++ b/lib/helpers.h
@@ -52,7 +52,7 @@ double double_mod(double a, long b);
  * @param n_bits The output number of bits
  * @return std::vector<bool>
  */
-std::vector<bool> int2bool(uint integer, uint8_t n_bits);
+std::vector<bool> int2bool(uint8_t integer, uint8_t n_bits);
 
 /**
  * @brief Generates a random string of given length
@@ -88,20 +88,6 @@ uint32_t get_symbol_val(const gr_complex *samples, gr_complex *ref_chirp,
 float determine_energy(const gr_complex *samples,
                        uint32_t m_samples_per_symbol);
 
-/**
- *  @brief  return the modulus a%b between 0 and (b-1)
- */
-long mod(long a, long b);
-
-/**
- * @brief Convert an integer into a MSB first vector of bool
- *
- * @param integer : The integer to convert
- * @param n_bits : The output number of bits
- * @return std::vector<bool>
- */
-std::vector<bool> int2bool(uint integer, uint8_t n_bits);
-
 /**
  * @brief Convert a MSB first vector of bool to a integer
  *
diff --git a/lib/interleaver_impl.cc b/lib/interleaver_impl.cc
index c66d4a77..222eda87 100644
--- a/lib/interleaver_impl.cc
+++ b/lib/interleaver_impl.cc
@@ -121,7 +121,7 @@ int interleaver_impl::general_work(int noutput_items,
     // convert to input codewords to binary vector of vector
     for (int i = 0; i < sf_app; i++) {
       if (i >= nitems_to_process) // ninput_items[0])
-        cw_bin[i] = int2bool(0, cw_len);
+        cw_bin[i] = int2bool((uint8_t )0, cw_len);
       else
         cw_bin[i] = int2bool(in[i], cw_len);
       cw_cnt++;