diff options
Diffstat (limited to 'transfer.c')
-rw-r--r-- | transfer.c | 5 |
1 files changed, 5 insertions, 0 deletions
@@ -264,6 +264,7 @@ static const GridTransfer transfer_lagrange = { static const double fw_factors_1[] = { 0.5, 1.0, 0.5 }; static const double fw_factors_2[] = { -1.0 / 16, 9.0 / 16, 1.0, 9.0 / 16, -1.0 / 16 }; static const double fw_factors_3[] = { 3.0 / 256, -25.0 / 256, 75.0 / 128, 1.0, 75.0 / 128, -25.0 / 256, 3.0 / 256 }; +static const double fw_factors_4[] = { -5.0 / 2048, 49.0 / 2048, -245.0 / 2048, 1225.0 / 2048, 1.0, 1225.0 / 2048, -245.0 / 2048, 49.0 / 2048, -5.0 / 2048 }; typedef struct GridTransferFW { ptrdiff_t order; @@ -343,6 +344,10 @@ static int transfer_fw_init(GridTransferContext *ctx) fw->order = 3; fw->factors = fw_factors_3; break; + case GRID_TRANSFER_FW_4: + fw->order = 4; + fw->factors = fw_factors_4; + break; default: return -EINVAL; } |