mirror of
git://sourceware.org/git/newlib-cygwin.git
synced 2025-01-19 04:49:25 +08:00
Szabolcs Nagy
e5791079c6
New log implementation
The new implementations are provided under !__OBSOLETE_MATH, it uses ISO C99 code. With default settings the worst case error in nearest rounding mode is 0.519 ULP with inlined fma and fma contraction. It uses a 2 KB lookup table, on aarch64 .text+.rodata size of libm.a is increased by 1703 bytes. The w_log.c wrapper is disabled since error handling is inline in the new code. New __HAVE_FAST_FMA and __HAVE_FAST_FMA_DEFAULT feature macros were added to enable selecting between the code path that uses fma and the one that does not. Targets supposed to set __HAVE_FAST_FMA_DEFAULT if they have single instruction fma and the compiler can actually inline it (gcc has __FP_FAST_FMA macro but that does not guarantee inlining with -fno-builtin-fma). Improvements on Cortex-A72: latency: 1.9x thruput: 2.3x
…
…
…
…
README for GNU development tools This directory contains various GNU compilers, assemblers, linkers, debuggers, etc., plus their support routines, definitions, and documentation. If you are receiving this as part of a GDB release, see the file gdb/README. If with a binutils release, see binutils/README; if with a libg++ release, see libg++/README, etc. That'll give you info about this package -- supported targets, how to use it, how to report bugs, etc. It is now possible to automatically configure and build a variety of tools with one command. To build all of the tools contained herein, run the ``configure'' script here, e.g.: ./configure make To install them (by default in /usr/local/bin, /usr/local/lib, etc), then do: make install (If the configure script can't determine your type of computer, give it the name as an argument, for instance ``./configure sun4''. You can use the script ``config.sub'' to test whether a name is recognized; if it is, config.sub translates it to a triplet specifying CPU, vendor, and OS.) If you have more than one compiler on your system, it is often best to explicitly set CC in the environment before running configure, and to also set CC when running make. For example (assuming sh/bash/ksh): CC=gcc ./configure make A similar example using csh: setenv CC gcc ./configure make Much of the code and documentation enclosed is copyright by the Free Software Foundation, Inc. See the file COPYING or COPYING.LIB in the various directories, for a description of the GNU General Public License terms under which you can copy the files. REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info on where and how to report problems.
Description
Languages
C
61.5%
Makefile
19.6%
C++
10.4%
Assembly
4.9%
M4
1%
Other
2.4%