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annotate default_arg.m @ 815:fae41958af4f feature/burgers1d

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Add support for artificial viscosity to the 1d burgers scheme. - Add support for artificial viscosity by parametrizing the discretization operator and boundary closure on the viscosity. - Add a time stepper which evaluates and updates the residual viscosity of the solution.
author Vidar Stiernstrom <vidar.stiernstrom@it.uu.se>
date Thu, 06 Sep 2018 12:43:51 +0200
parents 48b6fb693025
children
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48b6fb693025 Initial commit.
Jonatan Werpers <jonatan@werpers.com>
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1 function default_arg(s, val)
48b6fb693025 Initial commit.
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2 if evalin('caller',sprintf('~exist(''%s'',''var'') || isempty(%s)',s,s))
48b6fb693025 Initial commit.
Jonatan Werpers <jonatan@werpers.com>
parents:
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3 assignin('caller',s,val)
48b6fb693025 Initial commit.
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4 end
48b6fb693025 Initial commit.
Jonatan Werpers <jonatan@werpers.com>
parents:
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5 end