On Sun, 2 Oct 2011, Jon Elson wrote:
> Date: Sun, 02 Oct 2011 21:01:26 -0500
> From: Jon Elson <[email protected]>
> Reply-To: EMC developers <[email protected]>
> To: EMC developers <[email protected]>
> Subject: Re: [Emc-developers] Single-precision datatype
>
> andy pugh wrote:
>> I am a bit puzzled by the layers of typedefs in the source code.
>>
>> Is there a datatype (in C) that I can always be sure will be a 4-byte
>> single-precision float?
>>
> Sheesh, in C, nothing is guaranteed. Running Ubuntu with gcc on X86
> hardware,
> you have some guaranteed data types that are not likely to change for a
> while,
> but not a whole lot is guaranteed over other C compilers, other
> architectures
> and other variants of Linux.
>
> Jon
a "float" type is 99.9% IEEE 754 single precision (32 bit) these days since
almost all hardware is now IEEE 754 (those running EMC on VAXes feel free to
object :-)
Peter Wallace
Mesa Electronics
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