Always false float comparisons

Manu via Digitalmars-d digitalmars-d at puremagic.com
Sun May 15 21:06:50 PDT 2016


On 16 May 2016 at 14:05, Manu <turkeyman at gmail.com> wrote:
> On 16 May 2016 at 13:03, Walter Bright via Digitalmars-d
> <digitalmars-d at puremagic.com> wrote:
>> On 5/15/2016 7:01 PM, Manu via Digitalmars-d wrote:
>>>
>>> Are you saying 'float' in CTFE is not 'float'? I protest this about as
>>> strongly as I can muster...
>>
>>
>> I imagine you'll be devastated when you discover that the C++ Standard does
>> not require 32 bit floats to have 32 bit precision either, and never did.
>>
>> :-)
>
> I've never read the C++ standard, but I have more experience with a
> wide range of real-world compilers than most, and it is rarely very
> violated. The times it is, we've known about it, and it has made us
> all very, very angry.

Holy shit, it's just occurred to me that 'real' is only 64bits on arm
(and every non-x86 platform)...
That means a compiler running on an arm host will produce a different
binary than a compiler running on an x86 host!! O_O


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