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Re: Stephen Webb's staging headers patch
- To: Benjamin Kosnik <bkoz at redhat dot com>
- Subject: Re: Stephen Webb's staging headers patch
- From: David Edelsohn <dje at watson dot ibm dot com>
- Date: Thu, 19 Jul 2001 21:04:53 -0400
- cc: Gabriel Dos Reis <Gabriel dot Dos-Reis at cmla dot ens-cachan dot fr>, Phil Edwards <pedwards at disaster dot jaj dot com>, libstdc++ at gcc dot gnu dot org
>>>>> Benjamin Kosnik writes:
Ben> One problem is that the generic limits file is 32bit, and I
Ben> suppose using it for a 64bit target would be incorrect.
Ben> Gaby, do you have any thoughts?
Ben> I suppose the following would work and be robust:
Ben> Have
Ben> 1) 16bit generic limits file
Ben> 2) 32bit generic limits file
Ben> 3) 64bit generic limits file
Ben> (to be honest, Red Hat's already needed a 16bit limits file)
Ben> As part of gen_numeric_limits, some kind of check is done to see if
Ben> sizeof(native_int) != sizeof(target_int)
Ben> if so, then pick
Ben> generic_limits_(sizeof(target_int)) file.
What part of limits_generic.h is 32-bit specific? The "digits"
member? min() and max() use LONG_MIN and LONG_MAX, etc. so those values
will be correct if the target header file supplies correct values.
Thanks, David