Changeset 6128 in orxonox.OLD

Timestamp:

Dec 16, 2005, 1:07:54 PM (18 years ago)

Author:

bwuest

Message:

A function added in class converter.

Location:

branches/network/src

Files:

• lib/network/converter.cc (modified) (1 diff)
• lib/network/converter.h (modified) (1 diff)
• subprojects/network/network_unit_test.cc (modified) (1 diff)

branches/network/src/lib/network/converter.cc

@@ -107 +107 @@
   return result;
 }
+
+/*char* Converter::floatToBinString(float x)
+{
+  char* result = new char[200];
+  int pos = 0;
+  
+  int h = (int)x;
+  if (h > x)
+    h--;
+  x -= h;
+  
+  
+  while (h > 0 && pos < 200)
+  {
+    //printf("%i ", pos);
+    
+    if (h % 2 == 1)
+    {
+      result[pos] = '1';
+      h -= 1;
+    }
+    else
+      result[pos] = '0';
+    pos++;
+    h /= 2;
+  }
+  
+  //printf("x = %f\n", x);
+  
+  
+  //invert
+  for (int i = 0; i < pos / 2; i++)
+  {
+    char temp = result[i];
+    result[i] = result[pos - 1 - i];
+    result[pos - 1 - i] = temp;
+  }
+  
+  
+  result[pos++] = '.';
+  float sub = 0.5;
+  while (x > 0 && pos < 200)
+  {
+    //printf("%i ", pos);
+    
+    if (x >= sub)
+    {
+      result[pos] = '1';
+      x -= sub;
+    }
+    else
+      result[pos] = '0';
+    pos++;
+    sub /= 2;
+  }
+  
+  
+  return result;
+}*/
+
+char* Converter::floatToBinString(float x)
+{
+  char* result = new char[200];
+  int pos = 0;
+  
+  float sub = 1;
+  while (sub < x)
+    sub *= 2;
+  
+  //printf("sub = %f\n", sub);
+  
+  //while (sub >= 1 && pos < 200)
+  while ((x > 0 || sub >= 1) && pos < 200)
+  {
+    if (x >= sub)
+    {
+      result[pos] = '1';
+      x -= sub;
+    }
+    else
+      result[pos] = '0';
+    pos++;
+    sub /= 2;
+    
+    if (sub == 0.5f)
+      result[pos++] = '.';
+  }
+  
+  /*result[pos++] = '.';
+  sub = 0.5;
+  while (x > 0 && pos < 200)
+  {
+    if (x >= sub)
+    {
+      result[pos] = '1';
+      x -= sub;
+    }
+    else
+      result[pos] = '0';
+    pos++;
+    sub /= 2;
+  }
+  */
+  
+  return result;
+}

branches/network/src/lib/network/converter.h

@@ -25 +25 @@
     static int byteArrayToInt(byte* a);
     
-    //byte* floatToByteArray(int x);
-    //int byteArrayToFloat(byte[] a);
+    //byte* floatToByteArray(float x);
+    //float byteArrayToFloat(byte[] a);
+    
+    //Test
+    static char* floatToBinString(float x);
     
   private:

branches/network/src/subprojects/network/network_unit_test.cc

@@ -299 +299 @@
 
   
+  //float a = 5.4f;
+  //float b = 2.0f;
+  //printf("%f mod %f = %f", a, b, a % b);
+  
+  printf("\n");
+  
+  float y;
+  char* s;
+  
+  y = 12.0f;
+  s = Converter::floatToBinString(y);
+  printf("%f = ", y);
+  printf(s); printf("\n");
+  
+  y = 24549026.0f;
+  s = Converter::floatToBinString(y);
+  printf("%f = ", y);
+  printf(s); printf("\n");
+  
+  y = 12.4e20f;
+  s = Converter::floatToBinString(y);
+  printf("%f = ", y);
+  printf(s); printf("\n");
+  
+  y = 4.7824f;
+  s = Converter::floatToBinString(y);
+  printf("%f = ", y);
+  printf(s); printf("\n");
+  
+  
+  
   return 0;
 }