[FFmpeg-devel] [PATCH] avutil/timestamp: avoid using INFINITY for log10 result in av_ts_make_time_string2

[Marton Balint]

Using INFINITY can cause issues with -ffast-math, and since we only use this
value to decide the formatting, we can just as easily use 0 for log10 of zero.

Signed-off-by: Marton Balint <cus at passwd.hu>
---
 libavutil/timestamp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavutil/timestamp.c b/libavutil/timestamp.c
index 6c231a517d..be4540d4c8 100644
--- a/libavutil/timestamp.c
+++ b/libavutil/timestamp.c
@@ -24,7 +24,7 @@ char *av_ts_make_time_string2(char *buf, int64_t ts, AVRational tb)
         snprintf(buf, AV_TS_MAX_STRING_SIZE, "NOPTS");
     } else {
         double val = av_q2d(tb) * ts;
-        double log = (fpclassify(val) == FP_ZERO ? -INFINITY : floor(log10(fabs(val))));
+        double log = (fpclassify(val) == FP_ZERO ? 0 : floor(log10(fabs(val))));
         int precision = (isfinite(log) && log < 0) ? -log + 5 : 6;
         int last = snprintf(buf, AV_TS_MAX_STRING_SIZE, "%.*f", precision, val);
         last = FFMIN(last, AV_TS_MAX_STRING_SIZE - 1) - 1;
-- 
2.43.0