From 188196555598c17143be5013fc8c705bfe48da86 Mon Sep 17 00:00:00 2001 From: Jim Meyering Date: Thu, 31 Dec 1998 17:53:59 +0000 Subject: [PATCH] *** empty log message *** --- lib/strncasecmp.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 lib/strncasecmp.c diff --git a/lib/strncasecmp.c b/lib/strncasecmp.c new file mode 100644 index 0000000000..55c0f2ee3d --- /dev/null +++ b/lib/strncasecmp.c @@ -0,0 +1,34 @@ +#if HAVE_CONFIG_H +# include +#endif + +#include +#include + +#define TOLOWER(Ch) (isupper (Ch) ? tolower (Ch) : (Ch)) + +/* Compare no more than N characters of S1 and S2, + ignoring case, returning less than, equal to or + greater than zero if S1 is lexicographically less + than, equal to or greater than S2. */ + +int +strncasecmp (const char *s1, const char *s2, size_t n) +{ + register const unsigned char *p1 = (const unsigned char *) s1; + register const unsigned char *p2 = (const unsigned char *) s2; + unsigned char c1, c2; + + if (p1 == p2 || n == 0) + return 0; + + do + { + c1 = TOLOWER (*p1++); + c2 = TOLOWER (*p2++); + if (c1 == '\0' || c1 != c2) + return c1 - c2; + } while (--n > 0); + + return c1 - c2; +} -- 2.30.2