.Question About IAS

[High-Octane]

Since document shows the offset value for IAS (Indicated Air Speed), which is 02BC -- Long integer. Now question is, is it possible to convert it into FLOAT64? Or unless, there is other type of offset value with FLOAT64 varible?

Let me know.

[Pete Dowson]

Since document shows the offset value for IAS (Indicated Air Speed), which is 02BC -- Long integer. Now question is, is it possible to convert it into FLOAT64?

The IAS there is in 1/128ths of a Knot. In C or C++ you can simply read the 4 bytes into an int then convert it to a double (same as FS's FLOAT64) by dividing by 128.0.

e.g. assuming you read it into nIAS, then simply:

double dIAS = nIAS / 128.0;

In C/C++ experessing the number 128 as 128.0 automatically makes it a double.

Pete