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merge from dev #5

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May 11, 2024
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merge from dev #5

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a5dea0d
simplify readme about matvec
jalvesz May 8, 2024
d05b1dc
reorganize solver factorization for preconditioner
jalvesz May 11, 2024
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3 changes: 1 addition & 2 deletions README.md
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Expand Up @@ -49,9 +49,8 @@ call dense2coo( dense , coo )
### Sparse Matrix-Vector product
(available) Matrix vector products are interfaced by the procedure
```fortran
call matvec( Mat , vec_x, vec_y ) ! vec_y = Mat * vec_x
call matvec( Mat , vec_x, vec_y ) ! vec_y = vec_y + Mat * vec_x
```
**NOTE**: The matvec in this lib do not initialize `vec_y=0`. Why? enable easy recycling of data to do `vec_y=vec_y+Mat*vec_x`. If a clean vector is needed make sure to put a `vec_y=0` just before calling matvec.

| Matrix | full | symmetric |
|--------|-------|------------------|
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