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lammps/src/USER-MGPT/mgpt_bgmul_7.c.h
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mgpt_bgmul_7.c.h
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/* ----------------------------------------------------------------------
LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
http://lammps.sandia.gov, Sandia National Laboratories
Steve Plimpton, sjplimp@sandia.gov
Copyright (2003) Sandia Corporation. Under the terms of Contract
DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains
certain rights in this software. This software is distributed under
the GNU General Public License.
See the README file in the top-level LAMMPS directory.
------------------------------------------------------------------------- */
/* ----------------------------------------------------------------------
This file is part of the MGPT implementation. See further comments
in pair_mgpt.cpp and pair_mgpt.h.
------------------------------------------------------------------------- */
//#define TESTING
#ifdef TESTING
typedef struct {
double x,y;
} pair;
#define CPLX pair
#define __creal my_creal
#define __cimag my_cimag
#define __lfpd my_lfpd
#define __stfpd my_stfpd
#define __fxsmul my_fxsmul
#define __fxcpmadd my_fxcpmadd
#else
#define CPLX double _Complex
#endif
static double my_creal(CPLX x) {
return ((double *) &x)[0];
}
static double my_cimag(CPLX x) {
return ((double *) &x)[1];
}
static CPLX my_lfpd(const double *p) {
return ((CPLX *) p)[0];
}
static void my_stfpd(double *p,CPLX x) {
((CPLX *) p)[0] = x;
}
static CPLX my_fxsmul(CPLX x,double a) {
double y[2];
y[0] = a * my_creal(x);
y[1] = a * my_cimag(x);
return ((CPLX *) y)[0];
}
static CPLX my_fxcpmadd(CPLX t,CPLX x,double a) {
double y[2];
y[0] = my_creal(t) + a * my_creal(x);
y[1] = my_cimag(t) + a * my_cimag(x);
return ((CPLX *) y)[0];
}
void bgmul_7(double (* restrict Ain)[8],double (* restrict Bin)[8],double (* restrict Cin)[8]) {
CPLX C1,C2,C3,C4,C5,C6,C7;
CPLX A1_01,A1_23,A1_45,A1_67;
CPLX A2_23,A2_45,A2_67;
CPLX A3_23,A3_45,A3_67;
CPLX A4_45,A4_67;
CPLX A5_45,A5_67;
CPLX A6_67;
CPLX A7_67;
CPLX Bkj;
double (* restrict A)[8] = &Ain[-1];
double (* restrict B)[8] = &Bin[-1];
double (* restrict C)[8] = &Cin[-1];
int j;
A1_01 = __lfpd(&A[1][0]); A1_23 = __lfpd(&A[1][2]); A1_45 = __lfpd(&A[1][4]); A1_67 = __lfpd(&A[1][6]);
A2_23 = __lfpd(&A[2][2]); A2_45 = __lfpd(&A[2][4]); A2_67 = __lfpd(&A[2][6]);
A3_23 = __lfpd(&A[3][2]); A3_45 = __lfpd(&A[3][4]); A3_67 = __lfpd(&A[3][6]);
A4_45 = __lfpd(&A[4][4]); A4_67 = __lfpd(&A[4][6]);
A5_45 = __lfpd(&A[5][4]); A5_67 = __lfpd(&A[5][6]);
A6_67 = __lfpd(&A[6][6]);
A7_67 = __lfpd(&A[7][6]);
for(j = 0; j<7; j+=2) {
/* k = 1 */
Bkj = __lfpd(&B[1][j]);
C1 = __fxsmul(Bkj,__cimag(A1_01));
C2 = __fxsmul(Bkj,__creal(A1_23));
C3 = __fxsmul(Bkj,__cimag(A1_23));
C4 = __fxsmul(Bkj,__creal(A1_45));
C5 = __fxsmul(Bkj,__cimag(A1_45));
C6 = __fxsmul(Bkj,__creal(A1_67));
C7 = __fxsmul(Bkj,__cimag(A1_67));
/* k = 2 */
Bkj = __lfpd(&B[2][j]);
C1 = __fxcpmadd(C1,Bkj,__creal(A1_23));
C2 = __fxcpmadd(C2,Bkj,__creal(A2_23));
C3 = __fxcpmadd(C3,Bkj,__cimag(A2_23));
C4 = __fxcpmadd(C4,Bkj,__creal(A2_45));
C5 = __fxcpmadd(C5,Bkj,__cimag(A2_45));
C6 = __fxcpmadd(C6,Bkj,__creal(A2_67));
C7 = __fxcpmadd(C7,Bkj,__cimag(A2_67));
/* k = 3 */
Bkj = __lfpd(&B[3][j]);
C1 = __fxcpmadd(C1,Bkj,__cimag(A1_23));
C2 = __fxcpmadd(C2,Bkj,__cimag(A2_23));
C3 = __fxcpmadd(C3,Bkj,__cimag(A3_23));
C4 = __fxcpmadd(C4,Bkj,__creal(A3_45));
C5 = __fxcpmadd(C5,Bkj,__cimag(A3_45));
C6 = __fxcpmadd(C6,Bkj,__creal(A3_67));
C7 = __fxcpmadd(C7,Bkj,__cimag(A3_67));
/* k = 4 */
Bkj = __lfpd(&B[4][j]);
C1 = __fxcpmadd(C1,Bkj,__creal(A1_45));
C2 = __fxcpmadd(C2,Bkj,__creal(A2_45));
C3 = __fxcpmadd(C3,Bkj,__creal(A3_45));
C4 = __fxcpmadd(C4,Bkj,__creal(A4_45));
C5 = __fxcpmadd(C5,Bkj,__cimag(A4_45));
C6 = __fxcpmadd(C6,Bkj,__creal(A4_67));
C7 = __fxcpmadd(C7,Bkj,__cimag(A4_67));
/* k = 5 */
Bkj = __lfpd(&B[5][j]);
C1 = __fxcpmadd(C1,Bkj,__cimag(A1_45));
C2 = __fxcpmadd(C2,Bkj,__cimag(A2_45));
C3 = __fxcpmadd(C3,Bkj,__cimag(A3_45));
C4 = __fxcpmadd(C4,Bkj,__cimag(A4_45));
C5 = __fxcpmadd(C5,Bkj,__cimag(A5_45));
C6 = __fxcpmadd(C6,Bkj,__creal(A5_67));
C7 = __fxcpmadd(C7,Bkj,__cimag(A5_67));
/* k = 6 */
Bkj = __lfpd(&B[6][j]);
C1 = __fxcpmadd(C1,Bkj,__creal(A1_67));
C2 = __fxcpmadd(C2,Bkj,__creal(A2_67));
C3 = __fxcpmadd(C3,Bkj,__creal(A3_67));
C4 = __fxcpmadd(C4,Bkj,__creal(A4_67));
C5 = __fxcpmadd(C5,Bkj,__creal(A5_67));
C6 = __fxcpmadd(C6,Bkj,__creal(A6_67));
C7 = __fxcpmadd(C7,Bkj,__cimag(A6_67));
/* k = 7 */
Bkj = __lfpd(&B[7][j]);
C1 = __fxcpmadd(C1,Bkj,__cimag(A1_67));
C2 = __fxcpmadd(C2,Bkj,__cimag(A2_67));
C3 = __fxcpmadd(C3,Bkj,__cimag(A3_67));
C4 = __fxcpmadd(C4,Bkj,__cimag(A4_67));
C5 = __fxcpmadd(C5,Bkj,__cimag(A5_67));
C6 = __fxcpmadd(C6,Bkj,__cimag(A6_67));
C7 = __fxcpmadd(C7,Bkj,__cimag(A7_67));
__stfpd(&C[1][j],C1);
__stfpd(&C[2][j],C2);
__stfpd(&C[3][j],C3);
__stfpd(&C[4][j],C4);
__stfpd(&C[5][j],C5);
__stfpd(&C[6][j],C6);
__stfpd(&C[7][j],C7);
}
}
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