Yield a zero derivative when a forward-mode call base has no tangent. #8510
| Job | Run time |
|---|---|
| 27s | |
| 4m 4s | |
| 5m 45s | |
| 4m 25s | |
| 13m 20s | |
| 5m 46s | |
| 4m 34s | |
| 40m 12s | |
| 7m 20s | |
| 4m 42s | |
| 5m 57s | |
| 4m 2s | |
| 4m 49s | |
| 5m 18s | |
| 4m 45s | |
| 6m 13s | |
| 5m 17s | |
| 5m 33s | |
| 5m 2s | |
| 5m 27s | |
| 3m 34s | |
| 3m 20s | |
| 4m 51s | |
| 5m 24s | |
| 5m 19s | |
| 5m 59s | |
| 4m 7s | |
| 6m 58s | |
| 1h 9m 45s | |
| 4m 2s | |
| 3m 47s | |
| 5m 16s | |
| 16m 9s | |
| 8m 21s | |
| 3m 46s | |
| 4h 53m 36s |