Refactor saturatingSub() to be part of Macros.h

1 files changed, 5 insertions, 0 deletions

diff --git a/Macros.h b/Macros.h
index 789b09b6..1fdfb1ed 100644
--- a/Macros.h
+++ b/Macros.h
@@ -69,4 +69,9 @@
 #define IGNORE_WCASTQUAL_END
 #endif
 
+/* This subtraction is used by NetBSD / OpenBSD for calculation of CPU usage items. */
+static inline unsigned long long saturatingSub(unsigned long long a, unsigned long long b) {
+   return a > b ? a - b : 0;
+}
+
 #endif