How to initialize a large float array efficiently

[Rode]

Hi,
I want to initialize some elements in an array at the beginning(say 300 elements) and at the ending(230 elements) to 0 and the elements between start and end to a value based on the calculation. Currently, I am doing in the following way:

    float fArray[2000];
    int i;
    for( i = 0; i < 300; i++)
    {
        fArray[i]  = 0.0;
    }
 
   for(i = 300; i < 1770; i++)
    {
        //Setting fArray[i]  based on some calculation
    }
 
   for(i = 1770; i < 2000; i++)
  {
       fArray[i]  = 0.0;
 
  }
 

In the above code, the first and the last loops are doing the same except for the range. I want to optimize this code. If possible, I just want to avoid the loops to initialize the array with 0. I want to do that initialization in a better way. Is there any better solution for this?

[sivadhas2006]

Hi,
I want to initialize some elements in an array at the beginning(say 300 elements) and at the ending(230 elements) to 0 and the elements between start and end to a value based on the calculation. Currently, I am doing in the following way:

    float fArray[2000];
    int i;
    for( i = 0; i < 300; i++)
    {
        fArray[i]  = 0.0;
    }
 
   for(i = 300; i < 1770; i++)
    {
        //Setting fArray[i]  based on some calculation
    }
 
   for(i = 1770; i < 2000; i++)
  {
       fArray[i]  = 0.0;
 
  }
 

In the above code, the first and the last loops are doing the same except for the range. I want to optimize this code. If possible, I just want to avoid the loops to initialize the array with 0. I want to do that initialization in a better way. Is there any better solution for this?

Hi,

Try this ...

   float 
      fArray[2000] = {0.0};
   int 
      i = 0;
 
   for(i = 300; i < 1770; i++)
   {
      //Setting fArray[i]  based on some calculation
   }
 

Regards,
M.Sivadhas.

[Rode]

Hi,
Thanks for the reply. It is effective.

But if I want to initialize the array at a later stage, assume that I fideled with the array after its declaration and now I want to initalize to 0 at the top and 1 at the bottom, is there any way?

[sivadhas2006]

Hi,

If it is char array means we can initialize without using for loop.
But I don't know to initialize the float array without using for loop.

Regards,
M.Sivadhas.