The tool is useful for testing the internal arithmetic evaluation engine
(indeed I plan to use it in FATE), and provides a handy calculator when
you can't rely on bc ;-).
They allow to implement the if/then/else logic, which cannot be
implemented otherwise.
For example the expression:
A*B + not(A)*C
always evaluates to NaN if B is NaN, even in the case where A is 0.
This only happens for a "back" value of 0 which is invalid anyway,
but lcldec does not properly validate input.
Also extend the documentation to specify valid values.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
Prior to this a X bytes write could be seen as less than X bytes being
available if the check was done at an unfortunate moment.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Firstly, this test never worked as intended, always reporting
success. Secondly, bswap is available from 486 onward and can
thus be assumed present.
Signed-off-by: Mans Rullgard <mans@mansr.com>
With these changes, gcc 4.5 and later recognise it as a bswap
and use the proper instructions on ARM and x86. On x86, the
16-bit bswap is recognised from gcc 4.1.
Signed-off-by: Mans Rullgard <mans@mansr.com>
The existing functions defined in intfloat_readwrite.[ch] are
both slow and incorrect (infinities are not handled).
This introduces a new header with fast, inline conversion
functions using direct union punning assuming an IEEE-754
system, an assumption already made throughout the code.
The one use of Intel/Motorola extended 80-bit format is
replaced by simpler code sufficient under the present
constraints (positive normal values).
The old functions are marked deprecated and retained for
compatibility.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Solaris Studio (suncc) has difficulty with filling in
members of a union. Instead, let's retrieve and store the
cpuid() results separately. This is still a compiler bug,
however this fix does not cause a regression on other platforms.
Signed-off-by: Janne Grunau <janne-libav@jannau.net>
For some of the code e.g. doing timing measurements there is no
real point in running regression testing on it, thus it should
not be counted against coverage.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
This is the usual weirdness with const/non-const pointers through a function.
See the prototype of strchr for a standard example.
The function had to be moved down, below the point where stdint.h is
indirectly included.
Signed-off-by: Nicolas George <nicolas.george@normalesup.org>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
A value shifted left by >31 needs to have a 64-bit type.
As there are no defined channels in this range, the fix
is purely theoretical at this point, although it does
avoid some invalid shifts triggering the overflow
checker.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Stefano Sabatini
Clément Bœsch
Carl Eugen Hoyos
Michael Niedermayer
Clément Bœsch
Vitor Sessak
Diego Biurrun
Janne Grunau
Daniel Verkamp
Reimar Döffinger
Luca Barbato
Mans Rullgard
Anton Khirnov
Hanspeter Niederstrasser
Justin Ruggles
Nicolas George
Sean McGovern
Gavin Kinsey
Yordan Makariev
Tsvetelina Borisova
Giorgio Vazzana