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2025-02-Numerical/lib/nr/ansi/examples/xsphfpt.c
2025-09-12 18:55:25 +09:00

13 lines
216 B
C

/* Auxiliary routine for sphfpt */
extern int m,n;
extern float c2,dx,gmma;
void derivs(float x,float y[],float dydx[])
{
dydx[1]=y[2];
dydx[2]=(2.0*x*(m+1.0)*y[2]-(y[3]-c2*x*x)*y[1])/(1.0-x*x);
dydx[3]=0.0;
}