Convert float to bytes

Woodman — Tue, 27 Sep 2011 02:24:16 GMT

Hi,

Create a simple project for 56F801 in CW 8.0 and find a strange problem when converting float point to bytes. Define a union

typedef union _FloatType

{

float f;

byte b[4];

} FloatType;

then define and set

FloatType f;

f.f = 2.3f;

In debuger window, find b[0] = 0x3333, b[1] = 0x4013, b[2] = 0; b[3] = 0

Apparently b does not point to bytes. What's the problem here?

Thanks a lot.

Re: Convert float to bytes

giacomopetrini — Thu, 15 Dec 2011 21:11:16 GMT

Hi, I think it probably depends on what format the float is encoded (cfr. http://en.wikipedia.org/wiki/IEEE_754-2008 for example).

I don't know what format is used in the 56800...

Hope this helps

Bye Giacomo