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imp be517bd298 Ensure that all values of ns, us and ms work
for {n,u,m}stosbt

Integer overflows and wrong constants limited the accuracy of these
functions and created situatiosn where sbttoXs(Xstosbt(Y)) != Y. This
was especailly true in the ns case where we had millions of values
that were wrong.

Instead, used fixed constants because there's no way to say ceil(X)
for integer math. Document what these crazy constants are.

Also, use a shift one fewer left to avoid integer overflow causing
incorrect results, and adjust the equasion accordingly. Document this.

Allow times >= 1s to be well defined for these conversion functions
(at least the Xstosbt). There's too many users in the tree that they
work for >= 1s.

This fixes a failure on boot to program firmware on the mlx4
NIC. There was a msleep(1000) in the code. Prior to my recent rounding
changes, msleep(1000) worked, but msleep(1001) did not because the old
code rounded to just below 2^64 and the new code rounds to just above
it (overflowing, causing the msleep(1000) to really sleep 1ms).

A test program to test all cases will be committed shortly. The test
exaustively tries every value (thanks to bde for the test).

Sponsored by: Netflix, Inc
Differential Revision: https://reviews.freebsd.org/D18051
2018-12-04 07:39:15 +01:00
config
etc
include
libgloss Add libgloss install-pdf and install-html targets. 2018-11-20 11:13:34 +01:00
newlib Ensure that all values of ns, us and ms work 2018-12-04 07:39:15 +01:00
texinfo
winsup Cygwin: mkvers: fix a bug in sed statement 2018-12-01 17:00:35 +01:00
.drone.yml Continuous Integration: Add Tea CI build configuration. 2016-06-28 13:42:59 +02:00
.gitattributes
.gitignore
COPYING
COPYING.LIB
COPYING.LIBGLOSS
COPYING.NEWLIB Update Arm entry in COPYING.NEWLIB. 2018-09-25 15:10:46 -04:00
COPYING3
COPYING3.LIB
ChangeLog
MAINTAINERS
Makefile.def
Makefile.in Introduce @unless/@endunless and postbootstrap Makefile targets 2018-06-30 00:12:40 -03:00
Makefile.tpl Introduce @unless/@endunless and postbootstrap Makefile targets 2018-06-30 00:12:40 -03:00
README
README-maintainer-mode
compile
config-ml.in
config.guess Update config.guess and config.sub 2018-07-06 10:46:43 +02:00
config.rpath
config.sub Update config.guess and config.sub 2018-07-06 10:46:43 +02:00
configure Introduce @unless/@endunless and postbootstrap Makefile targets 2018-06-30 00:12:40 -03:00
configure.ac Introduce @unless/@endunless and postbootstrap Makefile targets 2018-06-30 00:12:40 -03:00
depcomp
djunpack.bat
install-sh
libtool.m4
ltgcc.m4
ltmain.sh
ltoptions.m4
ltsugar.m4
ltversion.m4
lt~obsolete.m4
makefile.vms
missing
mkdep
mkinstalldirs
move-if-change
setup.com
src-release
symlink-tree
ylwrap

README

		   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.