[gmpi] Re: Decision Time: 8.3

  • From: Mike Berry <mberry@xxxxxxxxx>
  • To: gmpi@xxxxxxxxxxxxx
  • Date: Mon, 15 Sep 2003 17:00:29 -0600



Steve Harris wrote:

On Mon, Sep 15, 2003 at 02:53:46 -0700, Chris Grigg wrote:

I see a need for

float - many normal params
double - high res params

Could those two be collapsed into just one or the other? Smells a bit redundant from a parameter perspective. 


Agreed, but I also think that int should be collapsed into one floating
point type, I feel there is some extra simplicity from handling integer
values as a hinted float type, eg. automation, interpolation etc. I dont
have any religious convition about it though :)



The collapse has a fundamental problem, which is that the range of the int is larger than the range of the float. What I mean by this is that 0x7FFFFFFF can be represented exactly by a 32 bit int, but cannot be represented exactly by a 32 bit float. So the use of floats for ints only works if the mantissa of the float is >= in size to the int. So doubles would work for 32 bit ints, but not 64 bit one. I think that we still need an int type.

--
Mike Berry
Adobe Systems


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