[UCRT] Import Microsoft.Windows.SDK.CRTSource version 10.0.22621.3

Imported from https://www.nuget.org/packages/Microsoft.Windows.SDK.CRTSource/10.0.22621.3
License: MIT

sdk/lib/ucrt/string/strrev.c

@@ -0,0 +1,51 @@
+/***
+*strrev.c - reverse a string in place
+*
+*       Copyright (c) Microsoft Corporation. All rights reserved.
+*
+*Purpose:
+*       defines _strrev() - reverse a string in place (not including
+*       '\0' character)
+*
+*******************************************************************************/
+
+#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 * __cdecl _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);
+}