On Feb 7, 2008 1:31 PM, Frank Mori Hess wrote:

On Thursday 07 February 2008 07:40 am, Fernando Cacciola wrote:

...

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(static_cast(&your_float));

Isn't this what reinterpret_cast is for? It wouldn't require bouncing through a void*. Also, to the original poster, don't succumb to the temptation to cast to anything other than a char* (like an int*) or you'll end up in strict aliasing violation hell.

For most uses of reinterpret_cast, it invokes implementation specific behavior. static_cast is portable though. So the latter is preferrable.

-- Frank

Regards, -- Felipe Magno de Almeida

On Feb 7, 2008 9:23 AM, linux wrote:

Actually, I was hoping Boost had an float-to-integer conversion so I could look at the implementation. I need to convert a float to int, but not in OpenGL Shading Language, which is "C like" but it doesn't have pointers, bit-shifts etc.

Ed

...

On Thursday 07 February 2008 07:40 am, Fernando Cacciola wrote:

...

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(static_cast(&your_float));

Isn't this what reinterpret_cast is for? It wouldn't require bouncing

Frank Mori Hess wrote: through

...

a void*. Also, to the original poster, don't succumb to the temptation to cast to anything other than a char* (like an int*) or you'll end up in strict aliasing violation hell.

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