7nmtc0.c

C语言描述的常用数值算法程序集

  #include "math.h"
  #include "stdio.h"
  #include "7nmtc.c"
  main()
  { int i,n,m;
    double nmtcf(double [],int);
    double b,eps,x[3]={0.0,0.0,0.0};
    b=2.0; m=10; n=3; eps=0.000001;
    nmtc(x,n,b,m,eps,nmtcf);
    printf("\n");
    for (i=0; i<=2; i++)
       printf("x(%d)=%13.7e\n",i,x[i]);
    printf("\n");
  }

  double nmtcf(x,n)
  int n;
  double x[];
  { double f,f1,f2,f3;
    n=n;
    f1=3.0*x[0]+x[1]+2.0*x[2]*x[2]-3.0;
    f2=-3.0*x[0]+5.0*x[1]*x[1]+2.0*x[0]*x[2]-1.0;
    f3=25.0*x[0]*x[1]+20.0*x[2]+12.0;
    f=sqrt(f1*f1+f2*f2+f3*f3);
    return(f);
  }