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