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Add hpval #4

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merged 3 commits into from
Jan 24, 2024
Merged

Add hpval #4

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8382f35
Add `hpval`
zmoon Jan 23, 2024
75d7574
Update docstring for `hval` as well
zmoon Jan 23, 2024
2459506
`sigma` arrays do need to be length N
zmoon Jan 24, 2024
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sigma arrays do need to be length N 
for the interface,
even though the last value is not used, to my understanding
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@zmoon
zmoon committed Jan 24, 2024
commit 24595067dfdeac872d4645588fb271dce0e21c75
6 changes: 4 additions & 2 deletions pytspack/__init__.py
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Expand Up @@ -43,7 +43,8 @@ def hval(xp, x, y, yp, sigma):
where HP is the derivative of H.
sigma : array
Tension factors, for each interval in the original X points
(as such, length N - 1).
(element I corresponds to the interval (I,I+1);
the last value in the array is not used).

Returns
-------
Expand Down Expand Up @@ -75,7 +76,8 @@ def hpval(xp, x, y, yp, sigma):
First derivatives at original X points. HP(X(I)) = YP(I).
sigma : array_like
Tension factors, for each interval in the original X points
(as such, length N - 1).
(element I corresponds to the interval (I,I+1);
the last value in the array is not used).

Returns
-------
Expand Down