Free42 with IEEE 754-2008 decimal floating-point -- interested in a sneak preview?

[Thomas Okken]

This is what's happened so far relative to 1.4.78:

* Decimal version: switched from BCD20 to Intel's Decimal Floating-Point Library v2.1.
* Binary version: replaced the old binary-to-decimal and decimal-to-binary conversions with code that uses the standard C library's equivalent functionality. This fixes final-digit errors in the Binary version, and also final-digit errors when switching from the Decimal to the Binary version.
* All versions: added angle reduction code to make SIN, COS, and ->REC more accurate in DEG and GRAD modes.
* Windows version: now uses %APPDATA%\Free42 as the default Free42 directory (for storing state.bin, print.bin, and keymap.txt). This avoids permissions problems, in Windows Vista and later, when people install the executable in a directory to which they don't have write access, like the popular choice "C:\Program Files".

Note that the last two of these are not yet in the packages at http://thomasokken.com/free42/download/intel-decimal/ . They will be when I finish the state file portability stuff, hopefully tomorrow. I'll post again when the final preview is ready. Of course, feel free to comment!