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//PURPOSE: C test bench for floating point converter IQ_to_FLOAT
#include <cstdlib>
#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <bitset>
#include <cmath>
#include "math.h"
#include <iomanip>
using namespace std;
//INITIAL TESTING PURPOSES: Use if you want to print individual bits
template <typename T>
void print_bits(T n) {
T mask = 1 << (sizeof(T)*8-1);
while (mask) {
cout << ((mask & n) ? "1" : "0");
mask >>= 1;
}
cout << endl;
}
int main() {
FILE *convFile;
FILE *newFile;
convFile = fopen("iq_to_float_input.txt", "w");
newFile = fopen("iq_to_float_output.txt", "w");
//iterate through test cases
for (signed int i = -0x8000; i <= 0x7FFF; i++) {
float end = float(i*exp2(-15));
unsigned int n = *(reinterpret_cast<unsigned int*>(&end));
//IN CASE YOU NEED TO LOOK AT SPECIFIC EXPONENT, FRAC, ETC VALUES
//ACTIVATE BY UNCOMMENTING
/*
unsigned int signed_bit = n>>31;
unsigned int exp = ((n>>23) &0xFF);
unsigned int frac = (n &0x7FFFFF);
cout << "end: " << end << endl;
cout << "n: " << hex << n << endl;
cout << "signed bit:" << hex << signed_bit << endl;
cout << "exp: " << hex << exp << endl;
cout << "fract: " << hex << frac << endl;
float f = *(float*)&n;
cout << "f" << f << endl;
*/
// print_bits<unsigned short>(start);
// print_bits<unsigned int>(n);
unsigned int something = i;
something &= 0xFFFF;
fprintf(convFile, "%x\n",something);
fprintf(newFile, "%x\n",n);
}
fclose(convFile);
fclose(newFile);
return 0;
}
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