Re: [Boost-users] Does boost have a float-to-integer conversion?

From: Fernando Cacciola (fernando.cacciola_at_[hidden])
Date: 2008-02-07 07:40:50

linux_at_[hidden] wrote:
> Does boost have a float-to-integer conversion?
>
There is Boost.NumericConversion

http://www.boost.org/libs/numeric/conversion/doc/index.html

which provides:

boost::numeric_cast<int>(your_float)

That conversion funtion will round even and throw an exception if the float 
is out of range.

>I need a routine to convert a 32 bit single precision float (1S 8E
>23M) to integer, with the end goal being that I can take the integer
>break it down into bytes... i.e.bits 0-7, 8-15,16-23,24-31.
>

Then I suspect you don't really want to "convert" the float to int but to 
get at the value-representation of the float.
If that's the case, you can do this:

char* float_value_rep = 
static_cast<char*>(static_cast<void*>(&your_float));

HTH

-- 
Fernando Cacciola
SciSoft
http://fcacciola.50webs.com
http://groups.google.com/group/cppba