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diff +sbp/+implementations/d2_variable_4.m @ 266:bfa130b7abf6 operator_remake

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Added error message for too few grid points to all implementation files.
author Martin Almquist <martin.almquist@it.uu.se>
date Fri, 09 Sep 2016 11:03:13 +0200
parents 6009f2712d13
children f7ac3cd6eeaa
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line diff
--- a/+sbp/+implementations/d2_variable_4.m	Fri Sep 09 10:41:31 2016 +0200
+++ b/+sbp/+implementations/d2_variable_4.m	Fri Sep 09 11:03:13 2016 +0200
@@ -1,4 +1,10 @@
 function [H, HI, D1, D2, e_l, e_r, d_l, d_r] = d2_variable_4(m,h)
+    
+    BP = 4;
+    if(m<2*BP)
+        error(['Operator requires at least ' num2str(2*BP) ' grid points']);
+    end
+
     N = m;
 
     H = speye(N);