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Qualify array pointers with restrict keyword #16

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Qualify array pointers with restrict keyword #16

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6 changes: 3 additions & 3 deletions c/leapfrog.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2,14 +2,14 @@
#include <stdlib.h>
#include <math.h>

void integrator_leapfrog_part1(int n_particles, double x[][3], double v[][3], double half_time_step){
void integrator_leapfrog_part1(int n_particles, double x[restrict][3], double v[restrict][3], double half_time_step){
for (int i=0;i<n_particles;i++){
x[i][0] += half_time_step * v[i][0];
x[i][1] += half_time_step * v[i][1];
x[i][2] += half_time_step * v[i][2];
}
}
void integrator_leapfrog_part2(int n_particles, double x[][3], double v[][3], double a[][3], double time_step, double half_time_step){
void integrator_leapfrog_part2(int n_particles, double x[restrict][3], double v[restrict][3], double a[restrict][3], double time_step, double half_time_step){
for (int i=0;i<n_particles;i++){
v[i][0] += time_step * a[i][0];
v[i][1] += time_step * a[i][1];
Expand All @@ -20,7 +20,7 @@ void integrator_leapfrog_part2(int n_particles, double x[][3], double v[][3], do
}
}

void gravity_calculate_acceleration(int n_particles, double m[], double x[][3], double a[][3]) {
void gravity_calculate_acceleration(int n_particles, double m[restrict], double x[restrict][3], double a[restrict][3]) {
double G = 6.6742367e-11; // m^3.kg^-1.s^-2
for (int i=0; i<n_particles; i++){
a[i][0] = 0;
Expand Down