This macro is generally useful to make it available in common.
Signed-off-by: Simon Glass sjg@chromium.org --- Changes in v3: - Add new patch to put abs() in common.h
include/common.h | 13 +++++++++++++ 1 files changed, 13 insertions(+), 0 deletions(-)
diff --git a/include/common.h b/include/common.h index 74d9704..92eac2c 100644 --- a/include/common.h +++ b/include/common.h @@ -229,6 +229,19 @@ ulong timer_get_boot_us(void); #define MIN(x, y) min(x, y) #define MAX(x, y) max(x, y)
+/* + * Return the absolute value of a number. This handles unsigned ints, shorts + * and chars and returns a signed long. + */ +#define abs(x) ({ \ + long ret; \ + { \ + typeof((x)) __x = (x); \ + ret = (__x < 0) ? -__x : __x; \ + } \ + ret; \ + }) + #if defined(CONFIG_ENV_IS_EMBEDDED) #define TOTAL_MALLOC_LEN CONFIG_SYS_MALLOC_LEN #elif ( ((CONFIG_ENV_ADDR+CONFIG_ENV_SIZE) < CONFIG_SYS_MONITOR_BASE) || \