I have a 4 byte hex number:
08fdc941
it should be convrted to a float number: 25.25, but I don't know how? I use C#
what is the correct way of converting from hex to float?
From this page on MSDN "How to: Convert Between Hexadecimal Strings and Numeric Types (C# Programming Guide)".
string hexString = "43480170";
uint num = uint.Parse(hexString, System.Globalization.NumberStyles.AllowHexSpecifier);
byte[] floatVals = BitConverter.GetBytes(num);
float f = BitConverter.ToSingle(floatVals, 0);
Console.WriteLine("float convert = {0}", f);
// Output: 200.0056
Something like this:
byte[] bytes = BitConverter.GetBytes(0x08fdc941);
if (BitConverter.IsLittleEndian)
{
bytes = bytes.Reverse().ToArray();
}
float myFloat = BitConverter.ToSingle(bytes, 0);
This yields 25.24855
, which is what I think you were looking for.
var bytes = BitConverter.GetBytes(0x08fdc941);
Array.Reverse(bytes);
var result = BitConverter.ToSingle(bytes, 0);
string hexString = 08fdc941;
Int32 IntRep = Int32.Parse(hexString, NumberStyles.AllowHexSpecifier);
// Integer to Byte[] and presenting it for float conversion
float myFloat = BitConverter.ToSingle(BitConverter.GetBytes(IntRep), 0);
// There you go
return myFloat;
For more information, see this:
Are you sure it's the right way around, since BitConverter.ToSingle(BitConverter.GetBytes(0x08fdc941).Reverse().ToArray(), 0)
is close.
Edit:
Incidentally, http://en.wikipedia.org/wiki/Single_precision_floating-point_format gives a pretty good summary of how ISO/IEC/IEEE 60559 (IEEE 754) single-precision floating-point numbers work.
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.