/*
  Vitis-HLS Testbench for Random Number Generators

  Copyright (C) 2022, Yuto Asaumi and Tomonori Izumi, All rights reserved.
*/


#include <stdio.h>
#include <iostream>
#include <hls_stream.h>
#include <ap_int.h>

#define N0 30 /* print N0 numbers */
#define N 10000 /* check N numbers */
#define SEED 19660809u

typedef ap_uint<32> AXI_VALUE;
typedef hls::stream<AXI_VALUE> AXI_STREAM;
void random_generator(AXI_STREAM& random_out);

void random_generator_reference_init(unsigned int);
unsigned int random_generator_reference(void);
  
int main(void){
  AXI_STREAM random_out;
  AXI_VALUE rout;
  unsigned int r, ref;
  
  std::cout << "# start to generate random numbers\n";
  random_generator_reference_init(SEED);
  
  for(int i=0;i<N;i++){
    random_generator(random_out);
    random_out >> rout;
    r = (unsigned int) rout;
    ref = random_generator_reference();
    if (i<N0) printf("%08x %08x\n",r,ref);
    if (r != ref) {
      std::cout << "# mismatch to the reference!\n" << std::flush;
      std::exit(-1);
    }
  }

  std::cout << "# finished\n";
}