diff options
Diffstat (limited to 'firmware')
-rw-r--r-- | firmware/export/system.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/firmware/export/system.h b/firmware/export/system.h index c7f5a8112c..f26b3d7f56 100644 --- a/firmware/export/system.h +++ b/firmware/export/system.h | |||
@@ -97,6 +97,11 @@ int get_cpu_boost_counter(void); | |||
97 | #define MAX(a, b) (((a)>(b))?(a):(b)) | 97 | #define MAX(a, b) (((a)>(b))?(a):(b)) |
98 | #endif | 98 | #endif |
99 | 99 | ||
100 | #ifndef SGN | ||
101 | #define SGN(a) \ | ||
102 | ({ typeof (a) ___a = (a); (___a > 0) - (___a < 0); }) | ||
103 | #endif | ||
104 | |||
100 | /* return number of elements in array a */ | 105 | /* return number of elements in array a */ |
101 | #define ARRAYLEN(a) (sizeof(a)/sizeof((a)[0])) | 106 | #define ARRAYLEN(a) (sizeof(a)/sizeof((a)[0])) |
102 | 107 | ||