16 lines
291 B
C++
16 lines
291 B
C++
#include "nr.h"
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void NR::quadvl(const DP x, const DP y, DP &fa, DP &fb, DP &fc, DP &fd)
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{
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DP qa,qb,qc,qd;
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qa=MIN(2.0,MAX(0.0,1.0-x));
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qb=MIN(2.0,MAX(0.0,1.0-y));
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qc=MIN(2.0,MAX(0.0,x+1.0));
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qd=MIN(2.0,MAX(0.0,y+1.0));
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fa=0.25*qa*qb;
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fb=0.25*qb*qc;
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fc=0.25*qc*qd;
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fd=0.25*qd*qa;
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}
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