From 8caae83d356c80536ac58a84801c861f0e6f0745 Mon Sep 17 00:00:00 2001
From: Michael Drake <michael.drake@codethink.co.uk>
Date: Mon, 27 Mar 2017 14:57:11 +0100
Subject: ASCII: Split out a-f test.

---
 utils/ascii.h | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

(limited to 'utils/ascii.h')

diff --git a/utils/ascii.h b/utils/ascii.h
index 55ca89ca2..6f7bf6d9a 100644
--- a/utils/ascii.h
+++ b/utils/ascii.h
@@ -110,6 +110,17 @@ static inline bool ascii_is_alphanumerical(char c)
 	return (ascii_is_alpha(c) || ascii_is_digit(c));
 }
 
+/**
+ * Test whether a character is 'a' to 'f' (lowercase).
+ *
+ * \param[in] c  Character to test.
+ * \return true iff `c` is 'a' to 'f' (lowercase), else false.
+ */
+static inline bool ascii_is_af_lower(char c)
+{
+	return (c >= 'a' && c <= 'f');
+}
+
 /**
  * Test whether a character is hexadecimal (lower case).
  *
@@ -118,8 +129,7 @@ static inline bool ascii_is_alphanumerical(char c)
  */
 static inline bool ascii_is_hex_lower(char c)
 {
-	return (ascii_is_digit(c) ||
-			(c >= 'a' && c <= 'f'));
+	return (ascii_is_digit(c) || ascii_is_af_lower(c));
 }
 
 /**
@@ -154,7 +164,7 @@ static inline bool ascii_is_hex(char c)
 {
 	return (ascii_is_digit(c) ||
 			ascii_is_af_upper(c) ||
-			(c >= 'a' && c <= 'f'));
+			ascii_is_af_lower(c));
 }
 
 /**
-- 
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