The stereo_interpolate functions add h_step to the values h
BUF_SIZE times. Within the stereo_interpolate C functions, the
values h (h0-h3, h00-h13) are declared as local float variables,
but the compiler is free to keep them in a register with extra
precision.

If the accumulation is rounded to 32 bit float precision after
each step, the less significant bits of h_step end up ignored
and the sum can deviate, affecting the end result more than
the currently set EPS.

By clearing the log2(BUF_SIZE) lower bits of h_step, we make sure
that the accumulation shouldn't differ significantly, regardless
of any extra precision in the accmulating register/variable.

This fixes the aacpsdsp checkasm test when built with clang for
mingw/x86_32.

Signed-off-by: Martin Storsjö <martin@martin.st>

As the values generated by av_bmg_get can be arbitrarily large
(only the stddev is specified), we can't use a fixed tolerance.
Calculate a dynamic tolerance (like in float_dsp from 38f966b222),
based on the individual steps of the calculation.

This fixes running this test with certain seeds, when built with
clang for mingw/x86_32.

Signed-off-by: Martin Storsjö <martin@martin.st>

As the values generated by av_bmg_get can be arbitrarily large
(only the stddev is specified), we can't use a fixed tolerance.

This matches what was done for test_vector_dmul_scalar in
38f966b222.

This fixes the float_dsp checkasm test for some seeds, when built
with clang for mingw/x86_32.

Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Ting Fu <ting.fu@intel.com>
Signed-off-by: Ruiling Song <ruiling.song@intel.com>

Fixes ticket #8175

Signed-off-by: James Almer <jamrial@gmail.com>

Signed-off-by: Ruiling Song <ruiling.song@intel.com>

These directories are not just for object files.

Fixes the following warning:
tests/checkasm/checkasm.c:615:12: warning: 'bench_init_ffmpeg' defined but not used

Should fix failures on x86_32.

Signed-off-by: James Almer <jamrial@gmail.com>

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>

Generic C implementation of vf_blend performs reads and writes of 16-bit
elements, which requires the buffers to be aligned to at least 2-byte
boundary.

Also, the change fixes source buffer overrun caused by src_offset being
added to to test handling of misaligned buffers.

Fixes: #7226

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

fix the warning: "function declaration isn’t a prototype", in C
int foo() and int foo(void) are different functions. int foo()
accepts an arbitrary number of arguments, while int foo(void) accepts 0
arguments.

Signed-off-by: Jun Zhao <mypopydev@gmail.com>

and checkasm test

This will make understanding failures and adjusting EPS easier

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

grainextract
grainmerge
average
extremity
negation

Signed-off-by: Josh de Kock <josh@itanimul.li>

Signed-off-by: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>

Should fix https://ffmpeg.org/pipermail/ffmpeg-devel/2018-February/225058.html

Signed-off-by: Muhammad Faiz <mfcc64@gmail.com>

This reverts commit adff97be5e.

It currently fails on Windows targets.

Signed-off-by: James Almer <jamrial@gmail.com>

This fixes fate-checkasm-hevc_mc on ARMCC 5.0 after adding
NEON HEVC MC assembly.

Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>

Tested for 10000 iterations on x86-32

Fixes: Ticket6848

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>

Signed-off-by: James Almer <jamrial@gmail.com>