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lal_precision.h
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Sun, Aug 25, 12:45
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rLAMMPS lammps
lal_precision.h
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/***************************************************************************
precision.h
-------------------
W. Michael Brown (ORNL)
Data and preprocessor definitions for different precision modes
__________________________________________________________________________
This file is part of the LAMMPS Accelerator Library (LAMMPS_AL)
__________________________________________________________________________
begin :
email : brownw@ornl.gov
***************************************************************************/
#ifndef LAL_PRECISION_H
#define LAL_PRECISION_H
struct
_lgpu_int2
{
int
x
;
int
y
;
};
#ifndef int2
#define int2 _lgpu_int2
#endif
struct
_lgpu_float2
{
float
x
;
float
y
;
};
struct
_lgpu_float4
{
float
x
;
float
y
;
float
z
;
float
w
;
};
struct
_lgpu_double2
{
double
x
;
double
y
;
};
struct
_lgpu_double4
{
double
x
;
double
y
;
double
z
;
double
w
;
};
#include <iostream>
inline
std
::
ostream
&
operator
<<
(
std
::
ostream
&
out
,
const
_lgpu_float2
&
v
)
{
out
<<
v
.
x
<<
" "
<<
v
.
y
;
return
out
;
}
inline
std
::
ostream
&
operator
<<
(
std
::
ostream
&
out
,
const
_lgpu_float4
&
v
)
{
out
<<
v
.
x
<<
" "
<<
v
.
y
<<
" "
<<
v
.
z
;
return
out
;
}
inline
std
::
ostream
&
operator
<<
(
std
::
ostream
&
out
,
const
_lgpu_double2
&
v
)
{
out
<<
v
.
x
<<
" "
<<
v
.
y
;
return
out
;
}
inline
std
::
ostream
&
operator
<<
(
std
::
ostream
&
out
,
const
_lgpu_double4
&
v
)
{
out
<<
v
.
x
<<
" "
<<
v
.
y
<<
" "
<<
v
.
z
;
return
out
;
}
// PRECISION - Precision for rsq, energy, force, and torque calculation
// ACC_PRECISION - Precision for accumulation of energies, forces, and torques
#ifdef _SINGLE_DOUBLE
#define OCL_PRECISION_COMPILE "-D_SINGLE_DOUBLE"
#define PRECISION float
#define ACC_PRECISION double
#define numtyp2 _lgpu_float2
#define numtyp4 _lgpu_float4
#define acctyp4 _lgpu_double4
#endif
#ifdef _DOUBLE_DOUBLE
#define OCL_PRECISION_COMPILE "-D_DOUBLE_DOUBLE"
#define PRECISION double
#define ACC_PRECISION double
#define numtyp2 _lgpu_double2
#define numtyp4 _lgpu_double4
#define acctyp4 _lgpu_double4
#endif
#ifndef PRECISION
#define OCL_PRECISION_COMPILE "-D_SINGLE_SINGLE"
#define PRECISION float
#define ACC_PRECISION float
#define numtyp2 _lgpu_float2
#define numtyp4 _lgpu_float4
#define acctyp4 _lgpu_float4
#endif
enum
{
SPHERE_SPHERE
,
SPHERE_ELLIPSE
,
ELLIPSE_SPHERE
,
ELLIPSE_ELLIPSE
};
// OCL_VENDOR: preprocessor define for hardware
// specific sizes of OpenCL kernel related constants
#ifdef FERMI_OCL
#define OCL_VENDOR "FERMI_OCL"
#endif
#ifdef CYPRESS_OCL
#define OCL_VENDOR "CYPRESS_OCL"
#endif
#ifndef OCL_VENDOR
#define OCL_VENDOR "GENERIC_OCL"
#endif
#endif
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