diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/cordic.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/cordic.h b/include/linux/cordic.h index cf68ca4a508c..3d656f54d64f 100644 --- a/include/linux/cordic.h +++ b/include/linux/cordic.h @@ -18,6 +18,15 @@ #include <linux/types.h> +#define CORDIC_ANGLE_GEN 39797 +#define CORDIC_PRECISION_SHIFT 16 +#define CORDIC_NUM_ITER (CORDIC_PRECISION_SHIFT + 2) + +#define CORDIC_FIXED(X) ((s32)((X) << CORDIC_PRECISION_SHIFT)) +#define CORDIC_FLOAT(X) (((X) >= 0) \ + ? ((((X) >> (CORDIC_PRECISION_SHIFT - 1)) + 1) >> 1) \ + : -((((-(X)) >> (CORDIC_PRECISION_SHIFT - 1)) + 1) >> 1)) + /** * struct cordic_iq - i/q coordinate. * |