1 files changed, 58 insertions, 0 deletions
diff --git a/private/crt32/string/strrev.c b/private/crt32/string/strrev.c
new file mode 100644
index 000000000..5c5642b58
--- /dev/null
+++ b/private/crt32/string/strrev.c
@@ -0,0 +1,58 @@
+/***
+*strrev.c - reverse a string in place
+*
+*	Copyright (c) 1985-1991, Microsoft Corporation. All rights reserved.
+*
+*Purpose:
+*	defines _strrev() - reverse a string in place (not including
+*	'\0' character)
+*
+*Revision History:
+*	02-27-90   GJF	Fixed calling type, #include <cruntime.h>, fixed
+*			copyright.
+*	10-02-90   GJF	New-style function declarator.
+*	01-18-91   GJF	ANSI naming.
+*
+*******************************************************************************/
+
+#include <cruntime.h>
+#include <string.h>
+
+/***
+*char *_strrev(string) - reverse a string in place
+*
+*Purpose:
+*	Reverses the order of characters in the string.  The terminating
+*	null character remains in place.
+*
+*Entry:
+*	char *string - string to reverse
+*
+*Exit:
+*	returns string - now with reversed characters
+*
+*Exceptions:
+*
+*******************************************************************************/
+
+char * _CALLTYPE1 _strrev (
+	char * string
+	)
+{
+	char *start = string;
+	char *left = string;
+	char ch;
+
+	while (*string++)		  /* find end of string */
+		;
+	string -= 2;
+
+	while (left < string)
+	{
+		ch = *left;
+		*left++ = *string;
+		*string-- = ch;
+	}
+
+	return(start);
+}