50 lines
1.5 KiB
C
Executable File
50 lines
1.5 KiB
C
Executable File
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/libm.h"
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#include "libavcodec/celp_math.c"
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static inline void IsAlmostEqual(float A, float B, float epsilon)
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{
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float diff = fabsf(A - B);
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float absa = fabsf(A);
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float absb = fabsf(B);
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float largest = (absb > absa) ? absb : absa;
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av_assert0(diff <= largest * epsilon);
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}
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int main(void)
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{
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int i;
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const float f1[3] = {0.0, 1.1, 2.2};
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const float f2[3] = {3.3, 4.4, 5.5};
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const int16_t i1[3] = {6, 7, 8};
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const int16_t i2[3] = {9, 10, 11};
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float r = ff_dot_productf(f1, f2, FF_ARRAY_ELEMS(f1));
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int64_t d = ff_dot_product(i1, i2, FF_ARRAY_ELEMS(i1));
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IsAlmostEqual(16.94f, r, 0.000001f);
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av_assert0(212 == d);
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for (i = 1024; i >= 1; i/=2)
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av_assert0(ff_log2_q15(i) == (1<<15)*((int)log2(i))+(1<<2));
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return 0;
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}
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