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+/* Internal functions for Unicode character case mappings.
+ Copyright (C) 2009 Free Software Foundation, Inc.
+ Written by Bruno Haible <bruno@clisp.org>, 2009.
+
+ This program is free software: you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published
+ by the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+#include <stdbool.h>
+#include <stddef.h>
+
+#include "unitypes.h"
+#include "uninorm.h"
+
+/* Return true if mapping NFD(S) to via MAPPING is a no-op. */
+extern int
+ u8_is_invariant (const uint8_t *s, size_t n,
+ uint8_t * (*mapping) (const uint8_t *s, size_t n, const char *iso639_language,
+ uninorm_t nf,
+ uint8_t *resultbuf, size_t *lengthp),
+ const char *iso639_language,
+ bool *resultp);
+extern int
+ u16_is_invariant (const uint16_t *s, size_t n,
+ uint16_t * (*mapping) (const uint16_t *s, size_t n, const char *iso639_language,
+ uninorm_t nf,
+ uint16_t *resultbuf, size_t *lengthp),
+ const char *iso639_language,
+ bool *resultp);
+extern int
+ u32_is_invariant (const uint32_t *s, size_t n,
+ uint32_t * (*mapping) (const uint32_t *s, size_t n, const char *iso639_language,
+ uninorm_t nf,
+ uint32_t *resultbuf, size_t *lengthp),
+ const char *iso639_language,
+ bool *resultp);