From 6423d4754c3769129510b9b44b6b8cfe8192ec67 Mon Sep 17 00:00:00 2001 From: Wilco Dijkstra Date: Mon, 24 Nov 2014 15:15:10 +0000 Subject: Improve performance of strncpy. --- string/strncpy.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) (limited to 'string') diff --git a/string/strncpy.c b/string/strncpy.c index 0915e036d6..d5fa5be08f 100644 --- a/string/strncpy.c +++ b/string/strncpy.c @@ -57,10 +57,10 @@ STRNCPY (char *s1, const char *s2, size_t n) if (--n4 == 0) goto last_chars; } - n = n - (s1 - s) - 1; - if (n == 0) - return s; - goto zero_fill; + s1++; + n = n - (s1 - s); + memset (s1, '\0', n); + return s; } last_chars: @@ -77,11 +77,7 @@ STRNCPY (char *s1, const char *s2, size_t n) } while (c != '\0'); - zero_fill: - do - *++s1 = '\0'; - while (--n > 0); - + memset (s1 + 1, '\0', n); return s; } libc_hidden_builtin_def (strncpy) -- cgit 1.4.1