From 401c93ddb76fb213b858ad722c83cdb4a510dc52 Mon Sep 17 00:00:00 2001 From: Ganesh Ajjanagadde Date: Sat, 14 Nov 2015 12:04:53 -0500 Subject: [PATCH] avutil/eval: change sqrt to hypot This improves the mathematical behavior of hypotenuse computation. Reviewed-by: Michael Niedermayer Signed-off-by: Ganesh Ajjanagadde --- libavutil/eval.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavutil/eval.c b/libavutil/eval.c index 7642b919cb..44129d65c2 100644 --- a/libavutil/eval.c +++ b/libavutil/eval.c @@ -299,7 +299,7 @@ static double eval_expr(Parser *p, AVExpr *e) case e_add: return e->value * (d + d2); case e_last:return e->value * d2; case e_st : return e->value * (p->var[av_clip(d, 0, VARS-1)]= d2); - case e_hypot:return e->value * (sqrt(d*d + d2*d2)); + case e_hypot:return e->value * hypot(d, d2); case e_bitand: return isnan(d) || isnan(d2) ? NAN : e->value * ((long int)d & (long int)d2); case e_bitor: return isnan(d) || isnan(d2) ? NAN : e->value * ((long int)d | (long int)d2); }