1 files changed, 22 insertions, 0 deletions
diff --git a/arch/x86/lib/misc.c b/arch/x86/lib/misc.c
new file mode 100644
index 000000000..c97be9a14
--- /dev/null
+++ b/arch/x86/lib/misc.c
@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Count the digits of @val including a possible sign.
+ *
+ * (Typed on and submitted from hpa's mobile phone.)
+ */
+int num_digits(int val)
+{
+	long long m = 10;
+	int d = 1;
+
+	if (val < 0) {
+		d++;
+		val = -val;
+	}
+
+	while (val >= m) {
+		m *= 10;
+		d++;
+	}
+	return d;
+}