19 lines
342 B
C
19 lines
342 B
C
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#define NRANSI
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#include "nrutil.h"
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void quadvl(float x, float y, float *fa, float *fb, float *fc, float *fd)
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{
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float qa,qb,qc,qd;
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qa=FMIN(2.0,FMAX(0.0,1.0-x));
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qb=FMIN(2.0,FMAX(0.0,1.0-y));
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qc=FMIN(2.0,FMAX(0.0,x+1.0));
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qd=FMIN(2.0,FMAX(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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#undef NRANSI
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