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| author | Paul B Mahol <onemda@gmail.com> | 2019-10-11 21:44:09 +0200 |
|---|---|---|
| committer | Paul B Mahol <onemda@gmail.com> | 2019-10-12 10:13:29 +0200 |
| commit | 961d6493e8c2846032dfda6f9dba557a98b02de4 (patch) | |
| tree | 6b2a6f0b0376c8a64b9548fe25451bd9ff67cad9 /libavutil | |
| parent | 72704cbff4257466662729fc20e3f0ab85aa8c9e (diff) | |
| download | ffmpeg-961d6493e8c2846032dfda6f9dba557a98b02de4.tar.gz | |
avutil/eval: add sgn()
Diffstat (limited to 'libavutil')
| -rw-r--r-- | libavutil/eval.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libavutil/eval.c b/libavutil/eval.c index 5da9a6d83b..48832979e2 100644 --- a/libavutil/eval.c +++ b/libavutil/eval.c @@ -163,6 +163,7 @@ struct AVExpr { e_last, e_st, e_while, e_taylor, e_root, e_floor, e_ceil, e_trunc, e_round, e_sqrt, e_not, e_random, e_hypot, e_gcd, e_if, e_ifnot, e_print, e_bitand, e_bitor, e_between, e_clip, e_atan2, e_lerp, + e_sgn, } type; double value; // is sign in other types union { @@ -197,6 +198,7 @@ static double eval_expr(Parser *p, AVExpr *e) case e_ceil : return e->value * ceil (eval_expr(p, e->param[0])); case e_trunc: return e->value * trunc(eval_expr(p, e->param[0])); case e_round: return e->value * round(eval_expr(p, e->param[0])); + case e_sgn: return e->value * FFDIFFSIGN(eval_expr(p, e->param[0]), 0); case e_sqrt: return e->value * sqrt (eval_expr(p, e->param[0])); case e_not: return e->value * (eval_expr(p, e->param[0]) == 0); case e_if: return e->value * (eval_expr(p, e->param[0]) ? eval_expr(p, e->param[1]) : @@ -470,6 +472,7 @@ static int parse_primary(AVExpr **e, Parser *p) else if (strmatch(next, "clip" )) d->type = e_clip; else if (strmatch(next, "atan2" )) d->type = e_atan2; else if (strmatch(next, "lerp" )) d->type = e_lerp; + else if (strmatch(next, "sgn" )) d->type = e_sgn; else { for (i=0; p->func1_names && p->func1_names[i]; i++) { if (strmatch(next, p->func1_names[i])) { @@ -657,6 +660,7 @@ static int verify_expr(AVExpr *e) case e_sqrt: case e_not: case e_random: + case e_sgn: return verify_expr(e->param[0]) && !e->param[1]; case e_print: return verify_expr(e->param[0]) |