ngx_path_separator()
diff --git a/src/os/unix/ngx_files.h b/src/os/unix/ngx_files.h
index 63d080b..7d83b04 100644
--- a/src/os/unix/ngx_files.h
+++ b/src/os/unix/ngx_files.h
@@ -160,6 +160,8 @@
#define ngx_realpath_n "realpath()"
#define ngx_getcwd(buf, size) (getcwd(buf, size) != NULL)
#define ngx_getcwd_n "getcwd()"
+#define ngx_path_separator(c) ((c) == '/')
+
#define NGX_MAX_PATH PATH_MAX
#define NGX_DIR_MASK_LEN 0
diff --git a/src/os/win32/ngx_files.h b/src/os/win32/ngx_files.h
index f3561d9..1e2c630 100644
--- a/src/os/win32/ngx_files.h
+++ b/src/os/win32/ngx_files.h
@@ -154,6 +154,8 @@
#define ngx_realpath_n ""
#define ngx_getcwd(buf, size) GetCurrentDirectory(size, buf)
#define ngx_getcwd_n "GetCurrentDirectory()"
+#define ngx_path_separator(c) ((c) == '/' || (c) == '\\')
+
#define NGX_MAX_PATH MAX_PATH