Zebediah Figura : quartz/tests: Use compare_double() to test IBasicVideo::get_AvgTimePerFrame().

[Alexandre Julliard]

Module: wine
Branch: master
Commit: f4b04e2e84e55d2e35d183c7c8a22b0a2e3bb9e2
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=f4b04e2e84e55d2e35d183c7c8a22b0a2e3bb9e2

Author: Zebediah Figura <z.figura12 at gmail.com>
Date:   Thu Oct 22 15:16:42 2020 -0500

quartz/tests: Use compare_double() to test IBasicVideo::get_AvgTimePerFrame().

Signed-off-by: Zebediah Figura <z.figura12 at gmail.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/quartz/tests/vmr7.c | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/dlls/quartz/tests/vmr7.c b/dlls/quartz/tests/vmr7.c
index f1b19aa6634..d7eafe53be8 100644
--- a/dlls/quartz/tests/vmr7.c
+++ b/dlls/quartz/tests/vmr7.c
@@ -18,6 +18,7 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  */
 
+#include <stdint.h>
 #define COBJMACROS
 #include "dshow.h"
 #include "d3d9.h"
@@ -65,6 +66,23 @@ static inline BOOL compare_media_types(const AM_MEDIA_TYPE *a, const AM_MEDIA_TY
         && !memcmp(a->pbFormat, b->pbFormat, a->cbFormat);
 }
 
+static BOOL compare_double(double f, double g, unsigned int ulps)
+{
+    uint64_t x = *(ULONGLONG *)&f;
+    uint64_t y = *(ULONGLONG *)&g;
+
+    if (f < 0)
+        x = ~x + 1;
+    else
+        x |= ((ULONGLONG)1)<<63;
+    if (g < 0)
+        y = ~y + 1;
+    else
+        y |= ((ULONGLONG)1)<<63;
+
+    return (x>y ? x-y : y-x) <= ulps;
+}
+
 static IFilterGraph2 *create_graph(void)
 {
     IFilterGraph2 *ret;
@@ -2707,7 +2725,7 @@ static void test_basic_video(void)
     reftime = 0.0;
     hr = IBasicVideo_get_AvgTimePerFrame(video, &reftime);
     ok(hr == S_OK, "Got hr %#x.\n", hr);
-    todo_wine ok(reftime == 0.02, "Got frame rate %.16e.\n", reftime);
+    ok(compare_double(reftime, 0.02, 1 << 28), "Got frame rate %.16e.\n", reftime);
 
     l = 0xdeadbeef;
     hr = IBasicVideo_get_BitRate(video, &l);