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| author | Michael Niedermayer <michael@niedermayer.cc> | 2024-01-31 02:37:57 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2024-02-12 00:50:46 +0100 |
| commit | f465badb062c8023bc245f4878e7a6a082afc416 (patch) | |
| tree | ebb601eac65a308c177ae8ec7b4175cda0ec1c3b | |
| parent | 66f60a2355417d731b5dfd0e6048a154ba1eb088 (diff) | |
| download | ffmpeg-f465badb062c8023bc245f4878e7a6a082afc416.tar.gz | |
avutil/rational: Document what is to be expected from av_d2q() of doubles representing rational numbers
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavutil/rational.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libavutil/rational.h b/libavutil/rational.h index 8cbfc8e066..849f47f38d 100644 --- a/libavutil/rational.h +++ b/libavutil/rational.h @@ -168,6 +168,10 @@ static av_always_inline AVRational av_inv_q(AVRational q) * In case of infinity, the returned value is expressed as `{1, 0}` or * `{-1, 0}` depending on the sign. * + * In general rational numbers with |num| <= 1<<26 && |den| <= 1<<26 + * can be recovered exactly from their double representation. + * (no exceptions were found within 1B random ones) + * * @param d `double` to convert * @param max Maximum allowed numerator and denominator * @return `d` in AVRational form |