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musl - an implementation of the standard library for Linux-based systems
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79ca86094d
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Szabolcs Nagy 79ca86094d fix rint.c and rintf.c when FLT_EVAL_METHOD!=0 
The old code used the rounding idiom incorrectly:

  y = (double)(x + 0x1p52) - 0x1p52;

the cast is useless if FLT_EVAL_METHOD==0 and causes a second rounding
if FLT_EVAL_METHOD==2 which can give incorrect result in nearest rounding
mode, so the correct idiom is to add/sub a power-of-2 according to the
characteristics of double_t.

This did not cause actual bug because only i386 is affected where rint
is implemented in asm.

Other rounding functions use a similar idiom, but they give correct
results because they only rely on getting a neighboring integer result
and the rounding direction is fixed up separately independently of the
current rounding mode. However they should be fixed to use the idiom
correctly too.
2014-10-31 11:35:40 -04:00
arch add explicit barrier operation to internal atomic.h API 2014-10-10 18:17:09 -04:00
crt add or1k (OpenRISC 1000) architecture port 2014-07-18 14:10:23 -04:00
dist add another example option to dist/config.mak 2012-04-24 16:49:11 -04:00
include suppress macro definitions of ctype functions under C++ 2014-10-14 12:30:50 -04:00
lib new solution for empty lib dir (old one had some problems) 2011-02-17 17:12:52 -05:00
src fix rint.c and rintf.c when FLT_EVAL_METHOD!=0 2014-10-31 11:35:40 -04:00
tools fix system breakage window during make install due to permissions 2014-01-15 22:29:13 -05:00
.gitignore add version.h to .gitignore; it is a generated file 2014-01-21 01:06:42 -05:00
configure add or1k (OpenRISC 1000) architecture port 2014-07-18 14:10:23 -04:00
COPYRIGHT update COPYRIGHT file to reflect new contributors 2014-07-31 16:06:11 -04:00
INSTALL update notice on broken gcc versions in INSTALL file 2014-07-31 19:02:54 -04:00
Makefile add tarball-producing targets to Makefile for ease of release 2014-06-25 16:14:37 -04:00
README update version reference in the README file 2014-06-25 14:16:53 -04:00
VERSION release 1.1.5 2014-10-14 13:32:42 -04:00
WHATSNEW release 1.1.5 2014-10-14 13:32:42 -04:00

README 

    musl libc

musl, pronounced like the word "mussel", is an MIT-licensed
implementation of the standard C library targetting the Linux syscall
API, suitable for use in a wide range of deployment environments. musl
offers efficient static and dynamic linking support, lightweight code
and low runtime overhead, strong fail-safe guarantees under correct
usage, and correctness in the sense of standards conformance and
safety. musl is built on the principle that these goals are best
achieved through simple code that is easy to understand and maintain.

The 1.1 release series for musl features coverage for all interfaces
defined in ISO C99 and POSIX 2008 base, along with a number of
non-standardized interfaces for compatibility with Linux, BSD, and
glibc functionality.

For basic installation instructions, see the included INSTALL file.
Information on full musl-targeted compiler toolchains, system
bootstrapping, and Linux distributions built on musl can be found on
the project website:

    http://www.musl-libc.org/