fork download
copy 
  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4.  
  5. int max_int(){
  6.    int t1=1,t2=1,d=1,p;
  7.    for(;;){
  8.       t2=t1+d;
  9.       if (t2-t1==t2 || t2<0){
  10.          d/=2;
  11.          continue;
  12.       }
  13.       if (t1==t2)
  14.          return t2;
  15.       if (t2>0){
  16.          p=d*2;
  17.          if (p>0 && p-d!=p)
  18.             d=p;
  19.          t1=t2;
  20.          continue;
  21.       }
  22.    }
  23. }
  24.  
  25.  
  26. int min_int(){
  27.    int t1=-1,t2=-1,d=1,p;
  28.    for(;;){
  29.       t2=t1-d;
  30.       if (t2+t1==t2 || t2>0){
  31.          d/=2;
  32.          continue;
  33.       }
  34.       if (t1==t2)
  35.          return t2; if (t2<0){
  36.          p=d*2;
  37.          if (p>0 && p-d!=p)
  38.             d=p;
  39.          t1=t2;
  40.          continue;
  41.       }
  42.    }
  43. }
  44.  
  45. float max_float(){
  46.    float t1=1,t2=1,d=1,p;
  47.    for(;;){
  48.       t2=t1+d;
  49.       if (t2-t1==t2 || t2<0){
  50.          d/=2;
  51.          continue;
  52.       }
  53.       if (t1==t2)
  54.          return t2;
  55.       if (t2>0){
  56.          p=d*2;
  57.          if (p>0 && p-d!=p)
  58.             d=p;
  59.          t1=t2;
  60.          continue;
  61.       }
  62.    }
  63. }
  64.  
  65.  
  66. float min_float(){
  67.    float t1=-1,t2=-1,d=1,p;
  68.    for(;;){
  69.       t2=t1-d;
  70.       if (t2+t1==t2 || t2>0){
  71.          d/=2;
  72.          continue;
  73.       }
  74.       if (t1==t2)
  75.          return t2; if (t2<0){
  76.          p=d*2;
  77.          if (p>0 && p-d!=p)
  78.             d=p;
  79.          t1=t2;
  80.          continue;
  81.       }
  82.    }
  83. }
  84.  
  85.  
  86. double max_double(){
  87.    double t1=1,t2=1,d=1,p;
  88.    for(;;){
  89.       t2=t1+d;
  90.       if (t2-t1==t2 || t2<0){
  91.          d/=2;
  92.          continue;
  93.       }
  94.       if (t1==t2)
  95.          return t2;
  96.       if (t2>0){
  97.          p=d*2;
  98.          if (p>0 && p-d!=p)
  99.             d=p;
  100.          t1=t2;
  101.          continue;
  102.       }
  103.    }
  104. }
  105.  
  106.  
  107. double min_double(){
  108.    double t1=-1,t2=-1,d=1,p;
  109.    for(;;){
  110.       t2=t1-d;
  111.       if (t2+t1==t2 || t2>0){
  112.          d/=2;
  113.          continue;
  114.       }
  115.       if (t1==t2)
  116.          return t2; if (t2<0){
  117.          p=d*2;
  118.          if (p>0 && p-d!=p)
  119.             d=p;
  120.          t1=t2;
  121.          continue;
  122.       }
  123.    }
  124. }
  125.  
  126.  
  127. long double max_extended(){
  128.   long  double t1=1,t2=1,d=1,p;
  129.    for(;;){
  130.       t2=t1+d;
  131.       if (t2-t1==t2 || t2<0){
  132.          d/=2;
  133.          continue;
  134.       }
  135.       if (t1==t2)
  136.          return t2;
  137.       if (t2>0){
  138.          p=d*2;
  139.          if (p>0 && p-d!=p)
  140.             d=p;
  141.          t1=t2;
  142.          continue;
  143.       }
  144.    }
  145. }
  146.  
  147.  
  148. long double min_extended(){
  149.    long double t1=-1,t2=-1,d=1,p;
  150.    for(;;){
  151.       t2=t1-d;
  152.       if (t2+t1==t2 || t2>0){
  153.          d/=2;
  154.          continue;
  155.       }
  156.       if (t1==t2)
  157.          return t2; if (t2<0){
  158.          p=d*2;
  159.          if (p>0 && p-d!=p)
  160.             d=p;
  161.          t1=t2;
  162.          continue;
  163.       }
  164.    }
  165. }
  166.  
  167.  
  168.  
  169.  
  170. int main()
  171. {
  172.    printf("int %d ... %d\n",max_int(),min_int());
  173.    printf("float %e ... %e\n",max_float(),min_float());
  174.    printf("double %e ... %e\n",max_double(),min_double());
  175.    printf("long double %Le ... %Le\n",max_extended(),min_extended());
  176.  
  177.  
  178.    return 0;
  179. }
  180.  
Success #stdin #stdout 0s 4256KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
int 2147483647 ... -2147483648
float 3.402823e+38 ... -3.402823e+38
double 1.797693e+308 ... -1.797693e+308
long double 1.189731e+4932 ... -1.189731e+4932
https://ideone.com/YoThYK
language:
C (gcc 8.3)
created:
4 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!