operate on one and zero pass value not type

[blegat]

Needed for kalmarek/GroupsCore.jl#21

[codecov]

Codecov Report

Merging #82 (26a0fe5) into master (595460d) will decrease coverage by 0.35%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master      #82      +/-   ##
==========================================
- Coverage   85.38%   85.03%   -0.36%     
==========================================
  Files          19       18       -1     
  Lines        1355     1490     +135     
==========================================
+ Hits         1157     1267     +110     
- Misses        198      223      +25     

Impacted Files	Coverage Δ
src/interface.jl	95.52% <100.00%> (+1.52%)	⬆️
src/rewrite.jl	76.92% <0.00%> (-13.67%)	⬇️
src/bigint.jl	100.00% <0.00%> (ø)
src/bigfloat.jl	100.00% <0.00%> (ø)
src/Test/sparse.jl	100.00% <0.00%> (ø)
src/Test/Test.jl
src/Test/array.jl	99.63% <0.00%> (+0.03%)	⬆️
src/Test/quadratic.jl	97.70% <0.00%> (+0.07%)	⬆️
src/Test/scalar.jl	94.20% <0.00%> (+0.55%)	⬆️
src/linear_algebra.jl	96.37% <0.00%> (+0.80%)	⬆️
... and 9 more

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