?? xdf1dim.c
字號:
/* Driver for routine df1dim */
#include <stdio.h>
#include "nr.h"
#include "nrutil.h"
#define NDIM 3
int ncom; /* defining declarations */
float *pcom,*xicom;
void (*nrdfun)();
void dfunc(x,df)
float df[],x[];
{
int i;
for (i=1;i<=3;i++) df[i]=(x[i]-1.0)*(x[i]-1.0);
}
main()
{
ncom=NDIM;
pcom=vector(1,ncom);
xicom=vector(1,ncom);
nrdfun=dfunc;
printf("\nEnter vector direction along which to\n");
printf("plot the function. Minimum is in the\n");
printf("direction 1.0 1.0 1.0 - enter x y z:\n\n");
pcom[1]=pcom[2]=pcom[3]=0.0;
scanf("%f %f %f",&xicom[1],&xicom[2],&xicom[3]);
scrsho(df1dim);
free_vector(xicom,1,ncom);
free_vector(pcom,1,ncom);
return 0;
}
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