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#pragma once
#include <cmath>
#include <stdio.h>
#include "types.h"
/* The following is the minimum definition of a spin class.
*
* The class must contain an M_t and an F_t for holding the sum of an
* integer number of spins and a double-weighted number of spins,
* respectively.
*
* void init(X_t *p);
* void free_spin(X_t p);
* void free_spin(M_t p);
* void free_spin(F_t p);
* X_t copy(X_t x);
* void add(M_t *x1, int factor, X_t x2);
* void add(F_t *x1, double factor, X_t x2);
* M_t scalar_multiple(int factor, X_t x);
* F_t scalar_multiple(double factor, X_t x);
* double norm_squared(F_t x);
* void write_magnetization(M_t M, FILE *outfile);
*
*/
template <class T>
struct height_t {
T x;
typedef T M_t;
typedef double F_t;
height_t() : x(0) {}
height_t(T x) : x(x) {}
inline T operator*(v_t a) const {
return x * a;
}
inline double operator*(double a) const {
return x * a;
}
inline T operator-(const height_t& h) const {
return x - h.x;
}
};
template <class T>
inline T& operator+=(T& M, const height_t<T> &h) {
M += h.x;
return M;
}
template <class T>
inline T& operator-=(T& M, const height_t<T> &h) {
M -= h.x;
return M;
}
double norm_squared(double h) {
return pow(h, 2);
}
template <class T>
void write_magnetization(T M, FILE *outfile) {
fwrite(&M, sizeof(T), 1, outfile);
}
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