opt/eval: Include mathematics.h for NAN/INFINITY

These files use NAN/INFINITY but didn't include mathematics.h to get
the fallback definitions if the system lacks the macros.

Signed-off-by: Martin Storsjö <martin@martin.st>

1 files changed, 1 insertions, 0 deletions

diff --git a/libavutil/eval.c b/libavutil/eval.c
index 4d8ebf4f6e..36b5ce5dda 100644
--- a/libavutil/eval.c
+++ b/libavutil/eval.c
@@ -29,6 +29,7 @@
 #include "avutil.h"
 #include "eval.h"
 #include "log.h"
+#include "mathematics.h"
 
 typedef struct Parser {
     const AVClass *class;