Added u256_div_mod_n

[yuvalsw]

This change is 

[orizi]

Reviewed all commit messages.
Reviewable status: 0 of 1 files reviewed, 1 unresolved discussion (waiting on @yuvalsw)

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corelib/src/integer.cairo line 1224 at r1 (raw file):

    a: u256, b: NonZero<u256>, n: NonZero<u256>
) -> Option<u256> {
    let inv_b = math::inv_mod(b, n)?;

i think this should be in math

[yuvalsw]

Reviewable status: 0 of 1 files reviewed, 1 unresolved discussion (waiting on @orizi)

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corelib/src/integer.cairo line 1224 at r1 (raw file):

Previously, orizi wrote…

i think this should be in math

It's only for u256, as opposed to the others in math, currently.
If you still think it should be there, I can move it. LMK

[orizi]

Reviewable status: 0 of 1 files reviewed, 1 unresolved discussion (waiting on @yuvalsw)

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corelib/src/integer.cairo line 1224 at r1 (raw file):

Previously, yuvalsw wrote…

It's only for u256, as opposed to the others in math, currently.
If you still think it should be there, I can move it. LMK

I think it still is better (since if and when we'll make it work for others, it will be there anyway)

[orizi]

Reviewed 2 of 2 files at r2.
Reviewable status: all files reviewed (commit messages unreviewed), all discussions resolved (waiting on @yuvalsw)

[orizi]

Reviewed all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @yuvalsw)

[yuvalsw]

Reviewable status: 2 of 3 files reviewed, all discussions resolved (waiting on @orizi)

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corelib/src/integer.cairo line 1224 at r1 (raw file):

Previously, orizi wrote…

I think it still is better (since if and when we'll make it work for others, it will be there anyway)

Done.

[orizi]

Reviewed 1 of 1 files at r3.
Reviewable status: all files reviewed (commit messages unreviewed), all discussions resolved (waiting on @yuvalsw)