Added Json Format printing

FPA_TC_GEN_JSON.cpp

@@ -0,0 +1,144 @@
+#include <bits/stdc++.h>
+using namespace std;
+#define BIAS 7
+//no of test cases
+#define CASE_AMOUNT 30
+
+//range of values
+#define LO -255
+#define HI 255
+
+#define NUM_SYS 2
+
+//decimal places
+#define PRECISION 5
+
+string binar(int dig)
+{
+    string bin = ""; int rem;
+    while(dig)
+    {
+        rem = dig%NUM_SYS; dig/=2;
+        bin.append(to_string(rem));
+    }
+    reverse(bin.begin(), bin.end());
+    return bin;
+}
+
+tuple<string, string, string> f_to_b(float f)
+{
+    int sgn = 0;
+    if(abs(f)!=f && f!=0.0) sgn = 1;
+    string sign = to_string(sgn);
+    string bin = binar(abs(int(f)));
+
+    string d_str = to_string(abs(f));
+    if(d_str.find(".")<d_str.length()) d_str = d_str.substr(d_str.find("."));
+    if(d_str.length()-1>PRECISION) d_str = d_str.substr(0, PRECISION+1);
+    float a_dec = stof(d_str); d_str = "";
+
+    while(!(a_dec<(1.0/pow(10, PRECISION))))
+    {
+        a_dec *= 2;
+        d_str.append(to_string(int(a_dec)));
+        a_dec = a_dec - float(int(a_dec));
+    }
+    return make_tuple(bin, d_str, sign);
+}
+
+
+tuple<string, int> pop_zeroes(string bin_l)
+{
+    int i = 11, expbase = 0;
+    while(i--)
+    {
+        if(bin_l.at(0) == '0')
+        {
+            bin_l = bin_l.substr(1);
+            expbase--;
+        }else break;
+
+        if(i==0)
+            return make_tuple("0", 0);
+    }
+    if(bin_l.length()>1) bin_l = bin_l.substr(1);
+    expbase--;
+    return make_tuple(bin_l, (expbase+BIAS));
+}
+
+string standardize(string bin_f, string bin_l, string sgn)
+{
+    string bin = ""; int exp;
+    if(bin_f.length()>1)
+    {
+        exp = bin_f.length()-1+BIAS;
+        bin = bin_f.substr(1) + bin_l;
+        if(bin.length()>11) bin = bin.substr(0, 11);
+        return sgn+""+binar(exp)+""+bin;
+    }
+
+    if(bin_f.empty())
+    {
+        tie(bin_l, exp) = pop_zeroes(bin_l);
+        return sgn+""+binar(exp)+""+bin_l;
+    }
+    return sgn + "" + binar(BIAS) + "" +bin_l;
+}
+
+int main(void){
+    int itr = CASE_AMOUNT;
+    srand(1);
+    float inp1, inp2, ans;
+    string bin_f, bin_l, exp;
+
+    freopen("test_cases.json", "w", stdout);
+    //cout << "large values:\n======================= "<<endl<<endl;
+    cout<<"[\n";
+    while(itr--)
+    {
+        cout<<"{\n";
+        inp1 = LO + static_cast <float> (rand()) /( static_cast <float> (RAND_MAX/(HI-LO)));
+        inp2 = LO + static_cast <float> (rand()) /( static_cast <float> (RAND_MAX/(HI-LO)));
+        ans = inp1 + inp2;
+
+        //std::cout << std::setprecision(PRECISION) << std::fixed;
+
+        tie(bin_f, bin_l, exp) = f_to_b(inp1);
+        cout << "\"in1\"" << " : \"0b" << standardize(bin_f, bin_l, exp) <<"\","<<endl;
+
+        tie(bin_f, bin_l, exp) = f_to_b(inp2);
+        cout << "\"in2\"" << " : \"0b" << standardize(bin_f, bin_l, exp) <<"\","<<endl;
+        tie(bin_f, bin_l, exp) = f_to_b(ans);
+        cout << "\"sum\"" << " : \"0b" << standardize(bin_f, bin_l, exp) <<"\","<<endl;
+
+        cout<<"},\n";
+    }
+
+    //cout << "small values:\n======================= "<<endl<<endl;
+    itr = CASE_AMOUNT;
+    while(itr--)
+    {
+        cout<<"{\n";
+
+
+
+        inp1 = -1 + static_cast <float> (rand()) /( static_cast <float> (RAND_MAX/(2.0)));
+        inp2 = -1 + static_cast <float> (rand()) /( static_cast <float> (RAND_MAX/(2.0)));
+        ans = inp1 + inp2;
+
+        //std::cout << std::setprecision(PRECISION) << std::fixed;
+
+        tie(bin_f, bin_l, exp) = f_to_b(inp1);
+        cout << "\"in1\"" << " : \"0b" << standardize(bin_f, bin_l, exp) <<"\","<<endl;
+
+        tie(bin_f, bin_l, exp) = f_to_b(inp2);
+        cout << "\"in2\"" << " : \"0b" << standardize(bin_f, bin_l, exp) <<"\","<<endl;
+        tie(bin_f, bin_l, exp) = f_to_b(ans);
+        cout << "\"sum\"" << " : \"0b" << standardize(bin_f, bin_l, exp) <<"\","<<endl;
+
+        cout<<"},\n";
+    }
+    cout<<"]\n";
+    fclose(stdout);
+    return 0;
+}