This section describes functions from file numerics.ct.
[y] = intpol(A...)
intpol(A,index1,index2...) is a general interpolation
function. A must be an array from which values are interpolated.
The rank of A must equal the number of index arguments.
Each index argument may be a real scalar or real array.
All index arguments must mutually agree in type and rank.
The array A may also be complex.
intpol(A,i,j,...) is a generalization of mapped indexing
A<[i,j,...]> for non-integral indices. The function benefits
from vectorization even more than most other Tela functions.
Error codes:
-1: First arg not a numerical array
-2: Rank of first arg does not match number of index args
-3: Non-real index arg
-4: Dissimilar index args
-6: Range overflow
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