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-rw-r--r--libc/string/strncasecmp.c32
1 files changed, 32 insertions, 0 deletions
diff --git a/libc/string/strncasecmp.c b/libc/string/strncasecmp.c
new file mode 100644
index 00000000..4140931e
--- /dev/null
+++ b/libc/string/strncasecmp.c
@@ -0,0 +1,32 @@
+/******************************************************************************
+ * Copyright (c) 2004, 2008 IBM Corporation
+ * All rights reserved.
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Contributors:
+ * IBM Corporation - initial implementation
+ *****************************************************************************/
+
+#include <string.h>
+#include <ctype.h>
+
+
+int
+strncasecmp(const char *s1, const char *s2, size_t n)
+{
+ if (n < 1)
+ return 0;
+
+ while (*s1 != 0 && *s2 != 0 && --n > 0) {
+ if (toupper(*s1) != toupper(*s2))
+ break;
+ ++s1;
+ ++s2;
+ }
+
+ return toupper(*s1) - toupper(*s2);
+}
+
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