25 lines
455 B
C++
25 lines
455 B
C++
#include "nr.h"
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DP NR::amotry(Mat_IO_DP &p, Vec_O_DP &y, Vec_IO_DP &psum, DP funk(Vec_I_DP &),
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const int ihi, const DP fac)
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{
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int j;
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DP fac1,fac2,ytry;
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int ndim=p.ncols();
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Vec_DP ptry(ndim);
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fac1=(1.0-fac)/ndim;
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fac2=fac1-fac;
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for (j=0;j<ndim;j++)
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ptry[j]=psum[j]*fac1-p[ihi][j]*fac2;
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ytry=funk(ptry);
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if (ytry < y[ihi]) {
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y[ihi]=ytry;
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for (j=0;j<ndim;j++) {
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psum[j] += ptry[j]-p[ihi][j];
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p[ihi][j]=ptry[j];
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}
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}
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return ytry;
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}
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