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32 lines
521 B
C
32 lines
521 B
C
#include <stdlib.h>
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#include <math.h>
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#include <stdio.h>
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#ifdef PARALLEL
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#include <mpi.h>
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#endif
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#include "header.h"
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double integrated_bin(double xlo, double ylo, double dx1, double dy1, int n)
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{
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int i,j;
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double dx,dy,xsum=0,vol=0,x1,x2,rs,rp;
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dx=dx1/n;
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dy=dy1/n;
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for(i=1;i<=n;++i)
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for(j=1;j<=n;++j)
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{
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rs=xlo+(i-0.5)*dx;
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rp=ylo+(j-0.5)*dy;
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x2=two_halo(rs,rp);
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x1=one_halo(rs,rp);
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xsum+=2*dy*rs*dx*(x1+x2);
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}
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dx=xlo+dx1;
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dy=ylo+dy1;
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xsum/=((dx*dx-xlo*xlo)*dy1);
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return(xsum);
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}
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