@@ -1119,6 +1119,7 @@ HAVE_LIST="

     sys_videoio_h

     ten_operands

     threads

+    trunc

     truncf

     vfp_args

     VirtualAlloc

@@ -2852,6 +2853,7 @@ check_mathfunc lrint

 check_mathfunc lrintf

 check_mathfunc round

 check_mathfunc roundf

+check_mathfunc trunc

 check_mathfunc truncf

 # these are off by default, so fail if requested and not available

@@ -86,6 +86,13 @@ static av_always_inline av_const float roundf(float x)

 }

 #endif /* HAVE_ROUNDF */

+#if !HAVE_TRUNC

+static av_always_inline av_const double trunc(double x)

+{

+    return (x > 0) ? floor(x) : ceil(x);

+}

+#endif /* HAVE_TRUNC */

+

 #if !HAVE_TRUNCF

 static av_always_inline av_const float truncf(float x)

 {