Mercurial > repos > public > sbplib
comparison subsSymfun.m @ 696:7c16b5af8d98 feature/quantumTriangles
Add Jonatans symbolic lifehax
| author | Ylva Rydin <ylva.rydin@telia.com> |
|---|---|
| date | Thu, 05 Oct 2017 18:04:23 +0200 |
| parents | |
| children |
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| 695:ba0d31ce4121 | 696:7c16b5af8d98 |
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| 1 % Subs for a symfun | |
| 2 % f remains a symbolic function. If any of it's arguments is eliminated | |
| 3 % it is removed from the argument list while preserving the order of the | |
| 4 % other arguments | |
| 5 function f = subsSymfun(f, old, new) | |
| 6 args = argnames(f); | |
| 7 | |
| 8 newExpr = subs(f, old, new); | |
| 9 vars = symvar(subs(args, old, new)); | |
| 10 | |
| 11 newArgs = args(ismember(args,vars)); | |
| 12 | |
| 13 f = symfun(newExpr, newArgs); | |
| 14 end |