Line data    Source code

       1              : // cppcheck-suppress-macro misra-c2012-1.2; allow __typeof__ extension
       2              : #define MIN(a, b) ({ \
       3              :   __typeof__ (a) _a = (a); \
       4              :   __typeof__ (b) _b = (b); \
       5              :   (_a < _b) ? _a : _b; \
       6              : })
       7              : 
       8              : // cppcheck-suppress-macro misra-c2012-1.2; allow __typeof__ extension
       9              : #define MAX(a, b) ({ \
      10              :   __typeof__ (a) _a = (a); \
      11              :   __typeof__ (b) _b = (b); \
      12              :   (_a > _b) ? _a : _b; \
      13              : })
      14              : 
      15              : // cppcheck-suppress-macro misra-c2012-1.2; allow __typeof__ extension
      16              : #define CLAMP(x, low, high) ({ \
      17              :   __typeof__(x) __x = (x); \
      18              :   __typeof__(low) __low = (low);\
      19              :   __typeof__(high) __high = (high);\
      20              :   (__x > __high) ? __high : ((__x < __low) ? __low : __x); \
      21              : })
      22              : 
      23              : // cppcheck-suppress-macro misra-c2012-1.2; allow __typeof__ extension
      24              : #define ABS(a) ({ \
      25              :   __typeof__ (a) _a = (a); \
      26              :   (_a > 0) ? _a : (-_a); \
      27              : })
      28              : 
      29              : #ifndef NULL
      30              : // this just provides a standard implementation of NULL
      31              : // in lieu of including libc in the panda build
      32              : // cppcheck-suppress [misra-c2012-21.1]
      33              : #define NULL ((void*)0)
      34              : #endif
      35              : 
      36              : // STM32 HAL defines this
      37              : #ifndef UNUSED
      38              : #define UNUSED(x) ((void)(x))
      39              : #endif
      40              : 
      41              : #define COMPILE_TIME_ASSERT(pred) ((void)sizeof(char[1 - (2 * (!(pred) ? 1 : 0))]))
      42              : 
      43              : // compute the time elapsed (in microseconds) from 2 counter samples
      44              : // case where ts < ts_last is ok: overflow is properly re-casted into uint32_t
      45      1977051 : uint32_t get_ts_elapsed(uint32_t ts, uint32_t ts_last) {
      46      1977051 :   return ts - ts_last;
      47              : }