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-rw-r--r--argp-standalone/strcasecmp.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/argp-standalone/strcasecmp.c b/argp-standalone/strcasecmp.c
new file mode 100644
index 000000000..bcad7a226
--- /dev/null
+++ b/argp-standalone/strcasecmp.c
@@ -0,0 +1,28 @@
+/* strcasecmp.c
+ *
+ */
+
+/* Written by Niels Möller <nisse@lysator.liu.se>
+ *
+ * This file is hereby placed in the public domain.
+ */
+
+#include <ctype.h>
+
+int strcasecmp(const char *s1, const char *s2)
+{
+ unsigned i;
+
+ for (i = 0; s1[i] && s2[i]; i++)
+ {
+ unsigned char c1 = tolower( (unsigned char) s1[i]);
+ unsigned char c2 = tolower( (unsigned char) s2[i]);
+
+ if (c1 < c2)
+ return -1;
+ else if (c1 > c2)
+ return 1;
+ }
+
+ return !s2[i] - !s1[i];
+}