Commit graph

3 commits

Author SHA1 Message Date
Michael Sevakis
aced667f48 Undo hacks to meant to get around string formatting limitations
The new vuprintf makes unnecessary workarounds due to formatting
limitations. I checked grep output for whatever appeared to fit
but it's possible I missed some instances because they weren't
so obvious.

Also, this means sound settings can dynamically work with any
number of decimals rather than the current assumption of one or
two. Add an ipow() function to help and take advantage of dynamic
field width and precision. Consolidate string formatting of sound
settings.

Change-Id: I46caf534859dfd1916cd440cd25e5206b192fcd8
2017-11-21 05:01:14 -05:00
Michael Sevakis
b2a373eb64 Replace fp_sqrt function with one that only uses shift, or and sub.
Simply extends the current isqrt() to be able to do fractional bits
and improves the initial estimate using clz(). iqrt() itself is
no more and is equivalent to fp_sqrt(x, 0). The original also had
a small bug where the guess comparision should have been >=, not >.

Uses no large integer math or division and is very accurate
(simply returns a truncated fraction).

Change-Id: I2ae26e6505df1770dc01e56220f7385369f90ae9
2017-10-01 20:29:38 -04:00
Michael Sevakis
95e23defb0 Make fixepoint.c as a shared library (libfixedpoint.a).
Change-Id: Icc10d6e85f890c432f191233a4d64e09f00be43d
Reviewed-on: http://gerrit.rockbox.org/456
Reviewed-by: Michael Sevakis <jethead71@rockbox.org>
Tested-by: Michael Sevakis <jethead71@rockbox.org>
2013-04-26 00:11:04 +02:00
Renamed from firmware/include/fixedpoint.h (Browse further)