makeoifs_kernel.h

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#ifndef __COMMON_MAKEOIFS_KERNEL__
#define __COMMON_MAKEOIFS_KERNEL__
 
template< typename T >
__global__ void makeoifs_kernel(const T * __restrict__ phi_x,
                               const T * __restrict__ phi_y,
                               const T * __restrict__ phi_z,
                               T * __restrict__ bf_x,
                               T * __restrict__ bf_y,
                               T * __restrict__ bf_z,
                               const T rho,
                               const T dt,
                               const int n) {
 
  const int idx = blockIdx.x * blockDim.x + threadIdx.x;
  const int str = blockDim.x * gridDim.x;
 
  for (int i = idx; i < n; i += str) {
 
    bf_x[i] = bf_x[i] + phi_x[i] * (rho / dt);
    bf_y[i] = bf_y[i] + phi_y[i] * (rho / dt);
    bf_z[i] = bf_z[i] + phi_z[i] * (rho / dt);
  }
 
}
 
template< typename T >
__global__ void scalar_makeoifs_kernel(const T * __restrict__ phi_s,
                                      T * __restrict__ bf_s,
                                      const T rho,
                                      const T dt,
                                      const int n) {
 
  const int idx = blockIdx.x * blockDim.x + threadIdx.x;
  const int str = blockDim.x * gridDim.x;
 
  for (int i = idx; i < n; i += str) {
 
    bf_s[i] = bf_s[i] + phi_s[i] * (rho / dt);
  }
 
}
 
#endif // __COMMON_MAKEOIFS_KERNEL__