minmax: add umin(a, b) and umax(a, b)

[platform/kernel/linux-starfive.git] / include / linux / minmax.h

diff --git a/include/linux/minmax.h b/include/linux/minmax.h
index ca69abd..2a197f5 100644 (file)
--- a/include/linux/minmax.h
+++ b/include/linux/minmax.h
@@ -77,6 +77,23 @@
 #define max(x, y)      __careful_cmp(x, y, >)
 
 /**
+ * umin - return minimum of two non-negative values
+ *   Signed types are zero extended to match a larger unsigned type.
+ * @x: first value
+ * @y: second value
+ */
+#define umin(x, y)     \
+       __careful_cmp((x) + 0u + 0ul + 0ull, (y) + 0u + 0ul + 0ull, <)
+
+/**
+ * umax - return maximum of two non-negative values
+ * @x: first value
+ * @y: second value
+ */
+#define umax(x, y)     \
+       __careful_cmp((x) + 0u + 0ul + 0ull, (y) + 0u + 0ul + 0ull, >)
+
+/**
  * min3 - return minimum of three values
  * @x: first value
  * @y: second value