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bug fix for back_substitute that breaks underdetermined solves in

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linear_solve with matrix RHS.
This commit is contained in:
Adrian Mariano 2020-03-17 23:50:57 -04:00
parent 05827785f5
commit 02ab8ea1d8
1 changed files with 1 additions and 1 deletions
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math.scad
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@ -646,7 +646,7 @@ function back_substitute(R, b, x=[],transpose = false) =
assert(is_matrix(R, square=true))
let(n=len(R))
assert(is_vector(b,n) || is_matrix(b,n),"R and b are not compatible in back_substitute")
!is_vector(b) ? transpose([for(i=[0:len(b[0])-1]) back_substitute(R,subindex(b,i))]) :
!is_vector(b) ? transpose([for(i=[0:len(b[0])-1]) back_substitute(R,subindex(b,i),transpose=transpose)]) :
transpose?
reverse(back_substitute(
[for(i=[0:n-1]) [for(j=[0:n-1]) R[n-1-j][n-1-i]]],