PSEUDO_F32vec1.h

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#ifndef CBM_KF_F32vec1_H
#define CBM_KF_F32vec1_H

#include <iostream>
#include <cmath>

/**********************************
 *
 *   Vector of one single float
 *
 **********************************/

// const union
// {
//     int i[1];
//     float m;
// }
// __f32vec1_true_cheat     = {0xFFFFFFFF},
// __f32vec1_false_cheat    = {0x00000000};

// #define _f32vec1_true     ((F32vec1)__f32vec1_true_cheat.m)
// #define _f32vec1_false    ((F32vec1)__f32vec1_false_cheat.m)

class F32vec1 {
 public:
  float v;

  float &operator[](int i) { return v; }
  float operator[](int i) const { return v; }

  F32vec1() {}
  F32vec1(const float &v0) { v = v0; }

  /* Conversion function */
  operator float() const { return v; } /* Convert to __m128 */

  /* Arithmetic Operators */

  /* Functions */
  // friend F32vec1 min( const F32vec1 &a, const F32vec1 &b ){ return a<b ?a :b; }
  // friend F32vec1 max( const F32vec1 &a, const F32vec1 &b ){ return a>b ?a :b; }

  /* Square Root */

  /* Reciprocal( inverse) Square Root */
  // friend F32vec1 rsqrt( const F32vec1 &a ){ return 1./sqrt(a); }

  /* Reciprocal (inversion) */
  friend F32vec1 rcp(const F32vec1 &a) { return 1. / a; }

  /* Absolute value */
  // friend F32vec1 fabs(const F32vec1 &a){ return fabs(a); }

  /* Sign */
  // friend F32vec1 sgn(const F32vec1 &a){ return a<0 ?-1 :(a>0 ?1 :0); }

  /* Logical */
  /*
  friend F32vec1 operator&( const F32vec1 &a, const F32vec1 &b ){ // mask returned
    F32vec1 tmp;
    int *x = (int*)&tmp;
    int *y = (int*)&a;
    int *z = (int*)&b;
    x[0] = y[0] & z[0];
    x[1] = y[1] & z[1];
    return tmp;
  }
  */
  /* Non intrinsic functions */

  /* Define all operators for consistensy */

  friend void operator+=(F32vec1 &a, const F32vec1 &b) { a = a + b; }
  friend void operator-=(F32vec1 &a, const F32vec1 &b) { a = a - b; }
  friend void operator*=(F32vec1 &a, const F32vec1 &b) { a = a * b; }
  friend void operator/=(F32vec1 &a, const F32vec1 &b) { a = a / b; }

#define _op(A, B, O) \
  F32vec1 z;         \
  z.v = A.v O B.v;   \
  return z;

  //   /* Comparison */
  friend F32vec1 operator<(const F32vec1 &a, const F32vec1 &b) { _op(a, b, <) }
  friend F32vec1 operator<=(const F32vec1 &a, const F32vec1 &b) { _op(a, b, <=) }
  friend F32vec1 operator>(const F32vec1 &a, const F32vec1 &b) { _op(a, b, >) }
  friend F32vec1 operator>=(const F32vec1 &a, const F32vec1 &b) { _op(a, b, >=) }

  //   /* Logic */
  friend F32vec1 operator&(const F32vec1 &a, const F32vec1 &b) { _op(a, b, &&) }
  friend F32vec1 operator|(const F32vec1 &a, const F32vec1 &b) { _op(a, b, ||) }
  friend F32vec1 operator||(const F32vec1 &a, const F32vec1 &b) { _op(a, b, ||) }
#undef _op

  friend F32vec1 operator!(const F32vec1 &a)
  {
    F32vec1 z;
    z[0] = !a[0];

    return z;
  }

  friend F32vec1 if3(const F32vec1 &a, const F32vec1 &b, const F32vec1 &c)
  {
    F32vec1 z;
    z[0] = (a[0]) ? b[0] : c[0];

    return z;
  }

#define NotEmpty(a) bool((a)[0])
#define Empty(a) !(bool((a)[0]))
  friend F32vec1 bool2int(const F32vec1 &a)
  { // mask returned
    return if3(a, 1, 0);
  }

  friend ostream &operator<<(ostream &strm, const F32vec1 &a)
  {
    strm << a[0];
    return strm;
  }

  friend istream &operator>>(istream &strm, F32vec1 &a)
  {
    float tmp;
    strm >> tmp;
    a = tmp;
    return strm;
  }

} __attribute__((aligned(4)));
;

typedef F32vec1 fvec;
const int fvecLen = 1;
// #define fvec_true  _f32vec1_true
// #define fvec_false _f32vec1_false
#define _fvecalignment

namespace nsL1 {
template <typename T>
struct vector {
  typedef std::vector<T> TStd;
  typedef std::vector<T> TSimd;
};

typedef nsL1::vector<fvec>::TSimd vector_fvec;
}; // namespace nsL1

template <typename T>
struct nsL1vector : public nsL1::vector<T> // just for use std::vector simultaniosly
{
};

#endif