This macro is generally useful to make it available in common.
Signed-off-by: Simon Glass <s...@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) || \
--
1.7.7.3
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