Change #263543

Comments

tests/fate/libavutil: add FATE test for mathematics
Test the integer math utility functions: av_gcd, av_rescale,
av_rescale_rnd (all rounding modes including PASS_MINMAX),
av_rescale_q, av_compare_ts, av_compare_mod, av_rescale_delta,
and av_add_stable. Includes large-value tests that exercise the
128-bit multiply path in av_rescale_rnd.

av_bessel_i0 is not tested since it uses floating point math
that is not bitexact across platforms.

Coverage for libavutil/mathematics.c: 0.00% -> 82.03%

Remaining uncovered lines are av_bessel_i0 (float, 23 lines)
and one edge case fallback in av_rescale_delta.

Changed files

• libavutil/Makefile
• libavutil/tests/mathematics.c
• tests/fate/libavutil.mak
• tests/ref/fate/mathematics