/*  Integer polynomial evaluation.  Polynomial given by array of coefficients a[0] ... a[degree].  Want to compute SUM(i=0,degree) a[i] * x^i*//* Type declaration for a polynomial evaluation function */  typedef int (*peval_fun)(int*, int, int);typedef struct {  peval_fun f;  char *descr;} peval_fun_rec, *peval_fun_ptr;/* Table of polynomial functions to test.  Null terminated */extern peval_fun_rec peval_fun_tab[];