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read/write binary

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Having trouble with binary read/write.  Writing a binary file for an integer using:


And then reading this data using:

$intVal = Number(FileRead($file,4),1)

Works perfectly.

Writing a binary file for a double using:


And then reading this data using:

$doubleVal = Number(FileRead($file,8),3)

Does not work.  Any ideas how to solve this problem?  I'm just trying to write a binary file mixed with strings, integers and floats and read the same file back in.  I can read/write strings and integers but not doubles.  The integers and strings read perfectly but the doubles all end up as "0".  The reading/writing is occurring on the same computer.  I have searched the forum but have been unsuccessful in finding a solution to the problem.




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