feat: add C implementation for stats/base/dists/invgamma/variance
#9201
| Job | Run time |
|---|---|
| 1m 37s | |
| 1m 37s |
stats/base/dists/invgamma/variance
#9201
| Job | Run time |
|---|---|
| 1m 37s | |
| 1m 37s |