Re: IEEE-754 encode/decode

[Tim Channon <tc@...>]

Clark Snowdall wrote:
> Hello all,
> 
> I'm a newbie here so be gentle ...
> 
> I need to convert back and forth between a string of bytes (4 bytes,
> 32-bits), and IEEE-754 floating point.  Basically I need to read a
> byte stream from a network socket and convert those bytes to a
> number.

There is the tiny Struct library (8.4k of c source) by the authors of
Lua which might help but gives a different answer on this computer, so
maybe it is using a different fp standard.

http://www.inf.puc-rio.br/~roberto/struct/

require("struct")
x = string.char(0x42, 0x96, 0x00, 0x00)
ans=struct.unpack(">!32f",x) -- big endian 32bit float
print(ans)
75