HEXA to REAL :parsereal(string,int) as REAL in ba4

[alan1968]

HEXA to Float arseFloat(string,int) as Float in ba4

hello

I would like to convert a hex 4 byte string into a Float (C4C6728F = -1587.58), but I can not find this function

a idea ?

alan

 

[Erel]

Have you checked ByteConverter library?

 

[alan1968]

yes ,but no solution only
HexToBytes (hex As String) As Byte()
and no
HexToFLoat(hex As String) As Float()

 

[Erel]

Once you converted it to bytes you can use FloatsFromBytes:
Basic4android - ByteConverter

 

[alan1968]

Erel,you want to give me a small example of the use of these two functions
I do not see how used

Thx!

 

[Erel]

Here:

Sub Activity_Create(FirstTime As Boolean)
   Log(ParseHexToFloat("C4C6728F"))
End Sub

Sub ParseHexToFloat(hex As String) As Float
   Dim bc As ByteConverter
   Return bc.FloatsFromBytes(bc.HexToBytes(hex))(0)
End Sub

 

[alan1968]

SUPER !

:sign0188:

your are my master

one question, why (0) after (bc.HexToBytes (hex)) ?

 

[alan1968]

thx! for all Erel
Now I will like to do the opposite (float to hex), but it does not work
I use the same as you metode

I did not find other example on the forum

Sub Activity_Create(FirstTime As Boolean) 
 Log(FloatToHex(-1258.25))
End Sub

Sub FloatToHex(Fl As Float) As String
Dim bc As ByteConverter 
Return bc.HexFromBytes(bc.FloatsToBytes(Fl)(0))

 

[klaus]

This code works:

Sub FloatToHex(Fl As Float) As String
    Dim bc As ByteConverter 
    Dim f(1) As Float
    f(0) = Fl
    Return bc.HexFromBytes(bc.FloatsToBytes(f))
End Sub

Best regards.