[M3devel] m3_round long double to int64?

[Daniel Alejandro Benavides D.]

Hi all:
No, no, no:
http://www.youtube.com/watch?v=o2hj7F7y_jk#t=6m51s 

to  9:56


Long double may necessarily map to IEEE format anyway though

http://en.wikipedia.org/wiki/Long_double

Thanks in advance



________________________________
 De: Jay K <jay.krell at cornell.edu>
Para: m3devel <m3devel at elegosoft.com> 
Enviado: Miércoles 28 de agosto de 2013 3:02
Asunto: [M3devel] m3_round long double to int64?
 



Anyone want to tackle this?
 
INT64 __stdcall m3_round(long double f);
 
rounds to nearest, breaks ties in the IEEE way (toward even, or such), presumably.
 
Make it correct for 32bit, 64bit, big endian, little endian.
Assume IEEE754.
 
You can assume long double is the same as double.
You'll likely want to split it into mantissa and exponent.
 
Thanks,
 - Jay

 

> Date: Wed, 28 Aug 2013 09:58:16 +0000
> To: m3commit at elegosoft.com
> From: jkrell at elego.de
> Subject: [M3commit] CVS Update: cm3
> 
> CVSROOT:	/usr/cvs
> Changes by:	jkrell at birch.	13/08/28 09:58:16
> 
> Modified files:
> 	cm3/m3-sys/m3back/src/: M3C.m3 
> 
> Log message:
> 	win64: temporary workaround: truncate instead of round
> 
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