refactor(printf): improved _strlen() function

1 files changed, 6 insertions, 7 deletions

diff --git a/printf.c b/printf.c
index 3cc7aa2..21d5620 100644
--- a/printf.c
+++ b/printf.c
@@ -70,22 +70,21 @@
 // \return The length of the string (excluding the terminating 0)

 static inline size_t _strlen(const char* str)

 {

-  size_t len = 0U;

-  while (str[len] != (char)0) {

-    len++;

-  }

-  return len;

+  const char* s;

+  for (s = str; *s; ++s);

+  return (size_t)(s - str);

 }

 

 

-// returns true if char is a digit

+// internal test if char is a digit (0-9)

+// \return true if char is a digit

 static inline bool _is_digit(char ch)

 {

   return (ch >= '0') && (ch <= '9');

 }

 

 

-// internal ASCII to unsigned int conversion

+// internal ASCII string to unsigned int conversion

 static inline unsigned int _atoi(const char** str)

 {

   unsigned int i = 0U;