bench: refactor to use string interpolation in blas/ext/base/zfill
#31929
| Job | Run time |
|---|---|
| 2m 19s | |
| 2m 19s |
blas/ext/base/zfill
#31929
| Job | Run time |
|---|---|
| 2m 19s | |
| 2m 19s |