vec_arithmetic.h

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#ifndef _vec_arithmetic_H_
#define _vec_arithmetic_H

/* Define all operators after definition of  basic operators */

#define vec_arithmetic(V,S) \
friend V operator-( const V &a ){ return V(0) - a; } \
friend V operator+( const V &a ){ return a; } \
friend V operator+( const V &a, const S &b ){ return a + V( b ); } \
friend V operator-( const V &a, const S &b ){ return a - V( b ); } \
friend V operator*( const V &a, const S &b ){ return a * V( b ); } \
friend V operator/( const V &a, const S &b ){ return a / V( b ); } \
friend V operator+( const S &a, const V &b ){ return V(a)+b; } \
friend V operator-( const S &a, const V &b ){ return V(a)-b; } \
friend V operator*( const S &a, const V &b ){ return V(a)*b; } \
friend V operator/( const S &a, const V &b ){ return V(a)/b; } \
friend void operator+=( V &a, const V &b ){ a = a + b ; } \
friend void operator-=( V &a, const V &b ){ a = a - b ; } \
friend void operator*=( V &a, const V &b ){ a = a * b ; } \
friend void operator/=( V &a, const V &b ){ a = a / b ; } \
friend void operator+=( V &a, const S &b ){ a = a + b ; } \
friend void operator-=( V &a, const S &b ){ a = a - b ; } \
friend void operator*=( V &a, const S &b ){ a = a * b ; } \
friend void operator/=( V &a, const S &b ){ a = a / b ; }

#endif