?? mpdiv.c
字號:
#define NRANSI
#include "nrutil.h"
#define MACC 3
void mpdiv(unsigned char q[], unsigned char r[], unsigned char u[],
unsigned char v[], int n, int m)
{
void mpinv(unsigned char u[], unsigned char v[], int n, int m);
void mpmov(unsigned char u[], unsigned char v[], int n);
void mpmul(unsigned char w[], unsigned char u[], unsigned char v[], int n,
int m);
void mpsub(int *is, unsigned char w[], unsigned char u[], unsigned char v[],
int n);
int is;
unsigned char *rr,*s;
rr=cvector(1,(n+MACC)<<1);
s=cvector(1,n+MACC);
mpinv(s,v,n-m+MACC,m);
mpmul(rr,s,u,n-m+MACC,n);
mpmov(q,&rr[1],n-m+1);
mpmul(rr,q,v,n-m+1,m);
mpsub(&is,&rr[1],u,&rr[1],n);
if (is) nrerror("MACC too small in mpdiv");
mpmov(r,&rr[n-m+1],m);
free_cvector(s,1,n+MACC);
free_cvector(rr,1,(n+MACC)<<1);
}
#undef MACC
#undef NRANSI
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