GitHub-Mirror/linux-bl808
2
0
Fork 0
mirror of https://github.com/Fishwaldo/linux-bl808.git synced 2025-06-17 20:25:19 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

lib: cordic: Move cordic macros and defines to header file

Browse source 
Now that these macros are in header file, we can eventually
clean up the duplicate macros present in the drivers that
utilize the same cordic algorithm implementation.

Also add CORDIC_ prefix to nonprefixed macros.

Reviewed-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Priit Laes <plaes@plaes.org>
Acked-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Priit Laes 2018-11-19 20:01:22 +02:00 • committed by Kalle Valo
parent 559afaa2c5
commit 58d81d64e0
2 changed files with 16 additions and 16 deletions
Download patch file Download diff file Expand all files Collapse all files

9
include/linux/cordic.h
View file

@ -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.
*