LibTomFloat supports variable radix for the mantissa - mix and match precision as required.
... part of T2, get it here
Author: Tom St Denis <tomstdenis [at] gmail [dot] com>
Maintainer: Rene Rebe <rene [at] t2-project [dot] org>
License: GPL PublicDomain
Status: Alpha
Version: 0.02
Remark: Does cross compile (as setup and patched in T2).
Download: http://libtom.org/files/ ltf-0.02.tar.bz2
T2 source: libtomfloat.cache
T2 source: libtomfloat.desc
Build time (on reference hardware): 1% (relative to binutils)2
Installed size (on reference hardware): 0.27 MB, 7 files
Dependencies (build time detected): 00-dirtree bash binutils coreutils diffutils findutils gawk grep libtommath linux-header make sed tar
Installed files (on reference hardware):
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1) This page was automatically generated from the T2 package source. Corrections, such as dead links, URL changes or typos need to be performed directly on that source.
2) Compatible with Linux From Scratch's "Standard Build Unit" (SBU).