/usr/include/dlib/simd/simd4f.h is in libdlib-dev 18.18-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// License: Boost Software License See LICENSE.txt for the full license.
#ifndef DLIB_sIMD4F_Hh_
#define DLIB_sIMD4F_Hh_
#include "simd_check.h"
#include "simd4i.h"
#include <cmath>
#include <iostream>
namespace dlib
{
#ifdef DLIB_HAVE_SSE2
class simd4f
{
public:
typedef float type;
inline simd4f() {}
inline simd4f(float f) { x = _mm_set1_ps(f); }
inline simd4f(float r0, float r1, float r2, float r3) { x = _mm_setr_ps(r0,r1,r2,r3); }
inline simd4f(const __m128& val):x(val) {}
inline simd4f(const simd4i& val):x(_mm_cvtepi32_ps(val)) {}
inline simd4f& operator=(const simd4i& val)
{
x = simd4f(val);
return *this;
}
inline simd4f& operator=(const float& val)
{
x = simd4f(val);
return *this;
}
inline simd4f& operator=(const __m128& val)
{
x = val;
return *this;
}
inline operator __m128() const { return x; }
// truncate to 32bit integers
inline operator __m128i() const { return _mm_cvttps_epi32(x); }
inline void load_aligned(const type* ptr) { x = _mm_load_ps(ptr); }
inline void store_aligned(type* ptr) const { _mm_store_ps(ptr, x); }
inline void load(const type* ptr) { x = _mm_loadu_ps(ptr); }
inline void store(type* ptr) const { _mm_storeu_ps(ptr, x); }
inline unsigned int size() const { return 4; }
inline float operator[](unsigned int idx) const
{
float temp[4];
store(temp);
return temp[idx];
}
private:
__m128 x;
};
class simd4f_bool
{
public:
typedef float type;
inline simd4f_bool() {}
inline simd4f_bool(const __m128& val):x(val) {}
inline simd4f_bool& operator=(const __m128& val)
{
x = val;
return *this;
}
inline operator __m128() const { return x; }
private:
__m128 x;
};
#else
class simd4f
{
public:
typedef float type;
inline simd4f() {}
inline simd4f(float f) { x[0]=f; x[1]=f; x[2]=f; x[3]=f; }
inline simd4f(float r0, float r1, float r2, float r3) { x[0]=r0; x[1]=r1; x[2]=r2; x[3]=r3;}
inline simd4f(const simd4i& val) { x[0]=val[0]; x[1]=val[1]; x[2]=val[2]; x[3]=val[3];}
// truncate to 32bit integers
inline operator simd4i::rawarray() const
{
simd4i::rawarray temp;
temp.a[0] = (int32)x[0];
temp.a[1] = (int32)x[1];
temp.a[2] = (int32)x[2];
temp.a[3] = (int32)x[3];
return temp;
}
inline simd4f& operator=(const float& val)
{
*this = simd4f(val);
return *this;
}
inline simd4f& operator=(const simd4i& val)
{
x[0] = val[0];
x[1] = val[1];
x[2] = val[2];
x[3] = val[3];
return *this;
}
inline void load_aligned(const type* ptr)
{
x[0] = ptr[0];
x[1] = ptr[1];
x[2] = ptr[2];
x[3] = ptr[3];
}
inline void store_aligned(type* ptr) const
{
ptr[0] = x[0];
ptr[1] = x[1];
ptr[2] = x[2];
ptr[3] = x[3];
}
inline void load(const type* ptr)
{
x[0] = ptr[0];
x[1] = ptr[1];
x[2] = ptr[2];
x[3] = ptr[3];
}
inline void store(type* ptr) const
{
ptr[0] = x[0];
ptr[1] = x[1];
ptr[2] = x[2];
ptr[3] = x[3];
}
inline unsigned int size() const { return 4; }
inline float operator[](unsigned int idx) const { return x[idx]; }
private:
float x[4];
};
class simd4f_bool
{
public:
typedef float type;
inline simd4f_bool() {}
inline simd4f_bool(bool r0, bool r1, bool r2, bool r3) { x[0]=r0; x[1]=r1; x[2]=r2; x[3]=r3;}
inline bool operator[](unsigned int idx) const { return x[idx]; }
private:
bool x[4];
};
#endif
// ----------------------------------------------------------------------------------------
inline std::ostream& operator<<(std::ostream& out, const simd4f& item)
{
float temp[4];
item.store(temp);
out << "(" << temp[0] << ", " << temp[1] << ", " << temp[2] << ", " << temp[3] << ")";
return out;
}
// ----------------------------------------------------------------------------------------
inline simd4f operator+ (const simd4f& lhs, const simd4f& rhs)
{
#ifdef DLIB_HAVE_SSE2
return _mm_add_ps(lhs, rhs);
#else
return simd4f(lhs[0]+rhs[0],
lhs[1]+rhs[1],
lhs[2]+rhs[2],
lhs[3]+rhs[3]);
#endif
}
inline simd4f& operator+= (simd4f& lhs, const simd4f& rhs)
{ return lhs = lhs + rhs; return lhs;}
// ----------------------------------------------------------------------------------------
inline simd4f operator- (const simd4f& lhs, const simd4f& rhs)
{
#ifdef DLIB_HAVE_SSE2
return _mm_sub_ps(lhs, rhs);
#else
return simd4f(lhs[0]-rhs[0],
lhs[1]-rhs[1],
lhs[2]-rhs[2],
lhs[3]-rhs[3]);
#endif
}
inline simd4f& operator-= (simd4f& lhs, const simd4f& rhs)
{ return lhs = lhs - rhs; return lhs;}
// ----------------------------------------------------------------------------------------
inline simd4f operator* (const simd4f& lhs, const simd4f& rhs)
{
#ifdef DLIB_HAVE_SSE2
return _mm_mul_ps(lhs, rhs);
#else
return simd4f(lhs[0]*rhs[0],
lhs[1]*rhs[1],
lhs[2]*rhs[2],
lhs[3]*rhs[3]);
#endif
}
inline simd4f& operator*= (simd4f& lhs, const simd4f& rhs)
{ return lhs = lhs * rhs; return lhs;}
// ----------------------------------------------------------------------------------------
inline simd4f operator/ (const simd4f& lhs, const simd4f& rhs)
{
#ifdef DLIB_HAVE_SSE2
return _mm_div_ps(lhs, rhs);
#else
return simd4f(lhs[0]/rhs[0],
lhs[1]/rhs[1],
lhs[2]/rhs[2],
lhs[3]/rhs[3]);
#endif
}
inline simd4f& operator/= (simd4f& lhs, const simd4f& rhs)
{ return lhs = lhs / rhs; return lhs;}
// ----------------------------------------------------------------------------------------
inline simd4f_bool operator== (const simd4f& lhs, const simd4f& rhs)
{
#ifdef DLIB_HAVE_SSE2
return _mm_cmpeq_ps(lhs, rhs);
#else
return simd4f_bool(lhs[0]==rhs[0],
lhs[1]==rhs[1],
lhs[2]==rhs[2],
lhs[3]==rhs[3]);
#endif
}
// ----------------------------------------------------------------------------------------
inline simd4f_bool operator!= (const simd4f& lhs, const simd4f& rhs)
{
#ifdef DLIB_HAVE_SSE2
return _mm_cmpneq_ps(lhs, rhs);
#else
return simd4f_bool(lhs[0]!=rhs[0],
lhs[1]!=rhs[1],
lhs[2]!=rhs[2],
lhs[3]!=rhs[3]);
#endif
}
// ----------------------------------------------------------------------------------------
inline simd4f_bool operator< (const simd4f& lhs, const simd4f& rhs)
{
#ifdef DLIB_HAVE_SSE2
return _mm_cmplt_ps(lhs, rhs);
#else
return simd4f_bool(lhs[0]<rhs[0],
lhs[1]<rhs[1],
lhs[2]<rhs[2],
lhs[3]<rhs[3]);
#endif
}
// ----------------------------------------------------------------------------------------
inline simd4f_bool operator> (const simd4f& lhs, const simd4f& rhs)
{
return rhs < lhs;
}
// ----------------------------------------------------------------------------------------
inline simd4f_bool operator<= (const simd4f& lhs, const simd4f& rhs)
{
#ifdef DLIB_HAVE_SSE2
return _mm_cmple_ps(lhs, rhs);
#else
return simd4f_bool(lhs[0]<=rhs[0],
lhs[1]<=rhs[1],
lhs[2]<=rhs[2],
lhs[3]<=rhs[3]);
#endif
}
// ----------------------------------------------------------------------------------------
inline simd4f_bool operator>= (const simd4f& lhs, const simd4f& rhs)
{
return rhs <= lhs;
}
// ----------------------------------------------------------------------------------------
inline simd4f min (const simd4f& lhs, const simd4f& rhs)
{
#ifdef DLIB_HAVE_SSE2
return _mm_min_ps(lhs, rhs);
#else
return simd4f(std::min(lhs[0],rhs[0]),
std::min(lhs[1],rhs[1]),
std::min(lhs[2],rhs[2]),
std::min(lhs[3],rhs[3]));
#endif
}
// ----------------------------------------------------------------------------------------
inline simd4f max (const simd4f& lhs, const simd4f& rhs)
{
#ifdef DLIB_HAVE_SSE2
return _mm_max_ps(lhs, rhs);
#else
return simd4f(std::max(lhs[0],rhs[0]),
std::max(lhs[1],rhs[1]),
std::max(lhs[2],rhs[2]),
std::max(lhs[3],rhs[3]));
#endif
}
// ----------------------------------------------------------------------------------------
inline simd4f reciprocal (const simd4f& item)
{
#ifdef DLIB_HAVE_SSE2
return _mm_rcp_ps(item);
#else
return simd4f(1.0f/item[0],
1.0f/item[1],
1.0f/item[2],
1.0f/item[3]);
#endif
}
// ----------------------------------------------------------------------------------------
inline simd4f reciprocal_sqrt (const simd4f& item)
{
#ifdef DLIB_HAVE_SSE2
return _mm_rsqrt_ps(item);
#else
return simd4f(1.0f/std::sqrt(item[0]),
1.0f/std::sqrt(item[1]),
1.0f/std::sqrt(item[2]),
1.0f/std::sqrt(item[3]));
#endif
}
// ----------------------------------------------------------------------------------------
inline float dot(const simd4f& lhs, const simd4f& rhs);
inline float sum(const simd4f& item)
{
#ifdef DLIB_HAVE_SSE41
return dot(simd4f(1), item);
#elif defined(DLIB_HAVE_SSE3)
simd4f temp = _mm_hadd_ps(item,item);
return _mm_cvtss_f32(_mm_hadd_ps(temp,temp));
#elif defined(DLIB_HAVE_SSE2) && (!defined(_MSC_VER) || _MSC_VER!=1400)
simd4f temp = _mm_add_ps(item,_mm_movehl_ps(item,item));
simd4f temp2 = _mm_shuffle_ps(temp,temp,1);
return _mm_cvtss_f32(_mm_add_ss(temp,temp2));
#else
return item[0]+item[1]+item[2]+item[3];
#endif
}
// ----------------------------------------------------------------------------------------
inline float dot(const simd4f& lhs, const simd4f& rhs)
{
#ifdef DLIB_HAVE_SSE41
return _mm_cvtss_f32(_mm_dp_ps(lhs, rhs, 0xff));
#else
return sum(lhs*rhs);
#endif
}
// ----------------------------------------------------------------------------------------
inline simd4f sqrt(const simd4f& item)
{
#ifdef DLIB_HAVE_SSE2
return _mm_sqrt_ps(item);
#else
return simd4f(std::sqrt(item[0]),
std::sqrt(item[1]),
std::sqrt(item[2]),
std::sqrt(item[3]));
#endif
}
// ----------------------------------------------------------------------------------------
inline simd4f ceil(const simd4f& item)
{
#ifdef DLIB_HAVE_SSE41
return _mm_ceil_ps(item);
#elif defined(DLIB_HAVE_SSE2)
float temp[4];
item.store(temp);
temp[0] = std::ceil(temp[0]);
temp[1] = std::ceil(temp[1]);
temp[2] = std::ceil(temp[2]);
temp[3] = std::ceil(temp[3]);
simd4f temp2;
temp2.load(temp);
return temp2;
#else
return simd4f(std::ceil(item[0]),
std::ceil(item[1]),
std::ceil(item[2]),
std::ceil(item[3]));
#endif
}
// ----------------------------------------------------------------------------------------
inline simd4f floor(const simd4f& item)
{
#ifdef DLIB_HAVE_SSE41
return _mm_floor_ps(item);
#elif defined(DLIB_HAVE_SSE2)
float temp[4];
item.store(temp);
temp[0] = std::floor(temp[0]);
temp[1] = std::floor(temp[1]);
temp[2] = std::floor(temp[2]);
temp[3] = std::floor(temp[3]);
simd4f temp2;
temp2.load(temp);
return temp2;
#else
return simd4f(std::floor(item[0]),
std::floor(item[1]),
std::floor(item[2]),
std::floor(item[3]));
#endif
}
// ----------------------------------------------------------------------------------------
// perform cmp ? a : b
inline simd4f select(const simd4f_bool& cmp, const simd4f& a, const simd4f& b)
{
#ifdef DLIB_HAVE_SSE41
return _mm_blendv_ps(b,a,cmp);
#elif defined(DLIB_HAVE_SSE2)
return _mm_or_ps(_mm_and_ps(cmp,a) , _mm_andnot_ps(cmp,b));
#else
return simd4f(cmp[0]?a[0]:b[0],
cmp[1]?a[1]:b[1],
cmp[2]?a[2]:b[2],
cmp[3]?a[3]:b[3]);
#endif
}
// ----------------------------------------------------------------------------------------
}
#endif // DLIB_sIMD4F_Hh_
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