Home » U++ Library support » U++ Core » put32 for double precision values..
| put32 for double precision values.. [message #35486] |
Wed, 22 February 2012 14:22  |
Monty.mvh
Messages: 31
Registered: July 2011
Location: Bangalore
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Hi,
FileOut function put32 will write integer values into file..
Is there a way where i can put double precision values (say 3.142) directly into file..
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| Re: put32 for double precision values.. [message #35487 is a reply to message #35486] |
Wed, 22 February 2012 15:27  |
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| Monty.mvh wrote on Wed, 22 February 2012 14:22 |
Hi,
FileOut function put32 will write integer values into file..
Is there a way where i can put double precision values (say 3.142) directly into file..
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Hi Monty,
Yes and no  You could use ugly casting trick and and force the double to go through the Put32 function (or better Put64 - double is 64bit on most platforms!).
Much better in this case is to use Put():double d = 3.142;
FileOut f;
// ...
f.Put(&d, sizeof(double));
That should do exactly what you want. To read it, you can use similarly: FileIn f;
// ...
f.Get(&d,sizeof(double));
In fact, you can store almost any plain data type like this 
Best regards,
Honza
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