JuliaLang / julia / #37912

77%

Build Type

push

local

Committed by web-flow

Commit Message

lmul!/rmul! for banded matrices (#55823)

This adds fast methods for `lmul!` and `rmul!` between banded matrices
and numbers.
Performance impact:
```julia
julia> T = Tridiagonal(rand(999), rand(1000), rand(999));

julia> @btime rmul!($T, 0.2);
  4.686 ms (0 allocations: 0 bytes) # nightly v"1.12.0-DEV.1225"
  669.355 ns (0 allocations: 0 bytes) # this PR
```

Run Details

61 of 61 new or added lines in 3 files covered. (100.0%)

6 existing lines in 4 files now uncovered.

78582 of 89570 relevant lines covered (87.73%)

16906806.76 hits per line