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[RFC]: add ndarray interface variants for missing modules in @stdlib/blas/ext/base #14404
Description
Description
This RFC proposes to add ndarray interface variants for the following modules present in @stdlib/blas/ext/base which do not yet have a corresponding implementation in @stdlib/blas/ext/base/ndarray.
Each module listed below needs an ndarray-style interface accepting offset and stride arguments, following the conventions of existing modules such as @stdlib/blas/ext/base/ndarray/daxpb.
c prefix (Complex float32)
- capx
- cfill
- cindex-of-column
- cindex-of-row
- clast-index-of-row
- creplicate
- cwapx
- cwax
- cwhere
- cwxsy
d prefix (float64)
- dapx
- dapxsum
- dapxsumkbn
- dapxsumkbn2
- dapxsumors
- dapxsumpw
- dasumpw
- dcartesian-power
- dcartesian-product
- dcartesian-square
- dcuany
- dcuevery
- dcusome
- dediff
- dfill
- dfill-less-than
- dindex-of-column
- dindex-of-row
- dlast-index-of-row
- dminheap-sift-down
- dminheapify
- dmskrev
- dnanasum
- dnanasumors
- dnancount
- dnancusumkbn
- dnannsum
- dnannsumkbn
- dnannsumkbn2
- dnannsumors
- dnannsumpw
- dnone
- dones
- dreplicate
- drev
- drrss
- drss
- drssbl
- drsskbn
- dsapxsum
- dsapxsumpw
- dsnannsumors
- dsnansum
- dsnansumors
- dsnansumpw
- dsome
- dsort2hp
- dsort2ins
- dsort2sh
- dssum
- dssumors
- dssumpw
- dvander
- dwapx
- dwax
- dwhere
- dwxdy
- dwxmy
- dwxpy
- dwxsy
- dzeros
g prefix (generic)
- gapx
- gapxsum
- gapxsumkbn
- gapxsumkbn2
- gapxsumors
- gapxsumpw
- gasumpw
- gcartesian-power
- gcartesian-product
- gcartesian-square
- gconjoin
- gcuany
- gcuevery
- gcusome
- gediff
- gevery
- gfill
- gfill-by
- gfill-less-than
- gfirst-index-not-equal
- gindex-of-column
- gindex-of-falsy-row
- gindex-of-row
- gindex-of-same-value
- gindex-of-truthy-row
- glast-index-of-row
- gminheap-sift-down
- gminheapify
- gmskrev
- gnancount
- gnannsumkbn
- gnannsumpw
- gnone
- greplicate
- grev
- gsome
- gsort2hp
- gsort2ins
- gsort2sh
- gsorthp-by
- gsortins
- gsortsh
- gvander
- gwapx
- gwax
- gwaxpb
- gwhere
- gwxdy
- gwxmy
- gwxpy
- gwxsy
s prefix (float32)
- sapx
- sapxsum
- sapxsumkbn
- sapxsumkbn2
- sapxsumors
- sapxsumpw
- sasumpw
- scartesian-power
- scartesian-product
- scartesian-square
- scuany
- scuevery
- scusome
- scusumpw
- sdsapxsum
- sdsapxsumpw
- sdsnansum
- sdsnansumpw
- sdssum
- sdssumpw
- sediff
- sfill
- sindex-of-column
- sindex-of-row
- slast-index-of-row
- sminheap-sift-down
- smskrev
- snancount
- snone
- sones
- sreplicate
- srev
- ssome
- ssort2hp
- ssort2ins
- ssort2sh
- ssortins
- ssortsh
- svander
- swapx
- swax
- swhere
- swxdy
- swxmy
- swxpy
- swxsy
- szeros
z prefix (complex128)
- zany
- zapx
- zcartesian-product
- zcartesian-square
- zfill
- zindex-of-column
- zindex-of-row
- zlast-index-of-falsy
- zlast-index-of-row
- znancount
- zreplicate
- zwapx
- zwax
- zwhere
- zwxmy
- zwxsy
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Checklist
- I have read and understood the Code of Conduct.
- Searched for existing issues and pull requests.
- The issue name begins with
RFC:.
Activity
ujjwalv01 commentedon Aug 19, 2026
Hi @0PrashantYadav0,
I wanted to confirm one thing;
Looking at the existing @stdlib/blas/ext/base/ndarray/daxpb as the reference, it appears these new packages should be pure JS wrappers that simply call the existing strided version's
.ndarraymethod , with no native C addon required; Should all new packages in this issue follow the same pattern?0PrashantYadav0 commentedon Aug 19, 2026
Yes, exactly. All new packages in this issue will follow that same pattern, acting mostly as JS wrappers around the existing strided version's
.ndarraymethod. You can reference @stdlib/blas/ext/base/ndarray/dsum as a good example of this setup.Regarding the native C addons: while they are not strictly required for the initial PR, they are highly preferred. We do eventually want the C implementations alongside the JS wrappers, but starting with just the JS wrapper for now is perfectly fine.
Maybe we need another tracking issues for C implementation of these packages in the future.
feat: add `blas/ext/base/ndarray/gwapx`
feat: add `blas/ext/base/ndarray/cwax`
feat: add `blas/ext/base/ndarray/gwax`
feat: add `blas/ext/base/ndarray/zwapx`
feat: add `blas/ext/base/ndarray/cwapx`
10 remaining items
feat: add `blas/ext/base/ndarray/swxpy`
feat: add `blas/ext/base/ndarray/dwxsy`
feat: add `blas/ext/base/ndarray/gwxdy`
feat: add `blas/ext/base/ndarray/swxsy`
feat: add `blas/ext/base/ndarray/dwxmy`
feat: add `blas/ext/base/ndarray/swxmy`
feat: add `blas/ext/base/ndarray/dwxdy`
feat: add `blas/ext/base/ndarray/swxdy`
feat: add `blas/ext/base/ndarray/zwxmy`
feat: add `blas/ext/base/ndarray/cwxmy`
feat: add `blas/ext/base/ndarray/zwxsy`
feat: add `blas/ext/base/ndarray/cwxsy`
feat: add `blas/ext/base/ndarray/zwxpy`
feat: add `blas/ext/base/ndarray/cwxpy`
feat: add `blas/ext/base/ndarray/dapx`