func.h

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#ifndef FUNC_H
#define FUNC_H

//
//  Mathmatical functions generalized in a C++ perspective.
//
  
#define funcA1(nm,fx,x,TYPEFX,TYPEX) \
class nm { \
public: \
  void operator()( TYPEX & val, TYPEX x ) { val = (fx); } \
  TYPEFX operator() ( TYPEX x ) { return (fx); } \
}

#define funcA2(nm,fx,x0,x1,TYPEFX,TYPEX) \
class nm { \
public: \
  void operator()( TYPEFX & val, TYPEX x0, TYPEX x1 ) { val = (fx); } \
  TYPEFX operator()( TYPEX x0, TYPEX x1 ) { return (fx); } \
}

#define funcA3(nm,fx,x0,x1,x2,TYPEFX,TYPEX) \
class nm { \
public: \
  void operator()( TYPEFX & val, TYPEX x0, TYPEX x1, TYPEX x2 ) { val = (fx); } \
  TYPEFX operator()( TYPEX x0, TYPEX x1, TYPEX x2 ) { return (fx); } \
}

#define funcA1V2(nm,fx,x,TYPEFX,TYPEX) \
class nm { public : \
  TYPEFX v0, v1; \
  nm(TYPEFX v0_, TYPEFX v1_) : v0(v0_), v1(v1_) {} \
  void operator()(TYPEFX & val, TYPEX x) { val = (fx); } \
  TYPEFX operator() ( TYPEX x ) { return (fx); } }

#define funcA1V1(nm,fx,x,TYPEFX,TYPEX) \
class nm { public : \
  TYPEFX v0; \
  nm(TYPEFX v0_) : v0(v0_) {} \
  void operator()(TYPEFX & val, TYPEX x) { val = (fx); } \
  TYPEFX operator() ( TYPEX x ) { return (fx); } }

#define funcA1V3(nm,fx,x,TYPEFX,TYPEX) \
class nm { public : \
  TYPEFX v0, v1, v2; \
  nm(TYPEFX v0_, TYPEFX v1_, TYPEFX v2_) : v0(v0_), v1(v1_), v2(v2_) {} \
  void operator()(TYPEFX & val, TYPEX x) { val = (fx); } \
  TYPEFX operator() ( TYPEX x ) { return (fx); } }


#define funcTA1(nm,fx,x) \
template< typename FX, typename X > \
class nm { \
public: \
  void operator()( FX & val, X x ) { val = (fx); } \
  FX operator()( X x ) { return (fx); } \
}

#define funcTA2(nm,fx,x0,x1) \
template< typename FX, typename X > \
class nm { \
public: \
  void operator()( FX & val, X x0, X x1 ) { val = (fx); } \
  FX operator()( X x0, X x1 ) { return (fx); } \
}

#define funcTA3(nm,fx,x0,x1,x2) \
template< typename FX, typename X > \
class nm { \
public: \
  void operator()( FX & val, X x0, X x1, X x2 ) { val = (fx); } \
  FX operator()( X x0, X x1, X x2 ) { return (fx); } \
}


#endif