MQL4 Reference 
File functions FileReadDouble
| double FileReadDouble( |
int handle, int size=DOUBLE_VALUE) |
Reads the double-precision number with floating point from the current binary file position.
The number format size can be 8 bytes (double) or 4 bytes (float).
To get the error information, one has to call the GetLastError() function.
Parameters:
| handle |
- |
File handle returned by the FileOpen() function. |
| size |
- |
Number format size. Can be DOUBLE_VALUE(8 bytes) or FLOAT_VALUE(4 bytes). |
Sample:
int handle;
double value;
handle=FileOpen("mydata.dat",FILE_BIN);
if(handle>0)
{
value=FileReadDouble(handle,DOUBLE_VALUE);
FileClose(handle);
}
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