Post Reply 
Free42 with IEEE 754-2008 decimal floating-point -- interested in a sneak preview?
03-16-2014, 01:45 PM (This post was last modified: 03-16-2014 02:43 PM by Werner.)
Post: #74
RE:Free42 with IEEE 754-2008 decimal floating-point -- interested in a sneak preview?
(03-15-2014 11:54 PM)Thomas Okken Wrote:  I just uploaded version 1.5.1. It has these improvements:

* exact asin(1), acos(0), etc., in DEG and GRAD modes
* it no longer shows negative zeroes
* Windows version: it supports running off a USB stick with a file named "portable" in the executable's directory

I think that covers everything that's come up in this thread.

Thanks Thomas.
BUT
in DEG mode:
SIN(180°+x) = -SIN(x) fails for x=10^-31, 10^-30, 10^-16 ... and many more (these fail on the WP34 as well btw)
UPDATE (Free42, but not WP34): this is probably due to 1e-31 - 10^-31 not being zero.. in fact 10^x does not produce the correct result for x= integer; even -1..)
SIN(45°) ^= COS(45°)
I can't find the range reduction code straight away, to see what would be wrong with it.. can you point me to it?
Cheers, Werner
Find all posts by this user
Quote this message in a reply
Post Reply 


Messages In This Thread
RE:Free42 with IEEE 754-2008 decimal floating-point -- interested in a sneak preview? - Werner - 03-16-2014 01:45 PM



User(s) browsing this thread: 1 Guest(s)