| /* |

| * This file is part of FFmpeg. |

| * |

| * FFmpeg is free software; you can redistribute it and/or |

| * modify it under the terms of the GNU Lesser General Public |

| * License as published by the Free Software Foundation; either |

| * version 2.1 of the License, or (at your option) any later version. |

| * |

| * FFmpeg is distributed in the hope that it will be useful, |

| * but WITHOUT ANY WARRANTY; without even the implied warranty of |

| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |

| * Lesser General Public License for more details. |

| * |

| * You should have received a copy of the GNU Lesser General Public |

| * License along with FFmpeg; if not, write to the Free Software |

| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |

| */ |

| |

| #include "libavutil/libm.h" |

| #include "libavcodec/celp_math.c" |

| |

| static inline void IsAlmostEqual(float A, float B, float epsilon) |

| { |

| float diff = fabsf(A - B); |

| float absa = fabsf(A); |

| float absb = fabsf(B); |

| float largest = (absb > absa) ? absb : absa; |

| av_assert0(diff <= largest * epsilon); |

| } |

| |

| int main(void) |

| { |

| int i; |

| const float f1[3] = {0.0, 1.1, 2.2}; |

| const float f2[3] = {3.3, 4.4, 5.5}; |

| const int16_t i1[3] = {6, 7, 8}; |

| const int16_t i2[3] = {9, 10, 11}; |

| |

| float r = ff_dot_productf(f1, f2, FF_ARRAY_ELEMS(f1)); |

| int64_t d = ff_dot_product(i1, i2, FF_ARRAY_ELEMS(i1)); |

| |

| IsAlmostEqual(16.94f, r, 0.000001f); |

| av_assert0(212 == d); |

| |

| for (i = 1024; i >= 1; i/=2) |

| av_assert0(ff_log2_q15(i) == (1<<15)*((int)log2(i))+(1<<2)); |

| |

| return 0; |

| } |