1 files changed, 76 insertions, 0 deletions
diff --git a/include/u8c/chk.h b/include/u8c/chk.h
new file mode 100644
index 0000000..03e4ff2
--- /dev/null
+++ b/include/u8c/chk.h
@@ -0,0 +1,76 @@
+/*
+	Copyright 2021 Gabriel Jensen
+
+	This file is part of u8c.
+
+	u8c is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+
+	u8c 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 Affero General Public License for more details.
+
+	You should have received a copy of the GNU Affero General Public License along with u8c.
+
+	If not, see <https://www.gnu.org/licenses/>.
+*/
+# if !defined(u8c_hdr_chk)
+# define u8c_hdr_chk
+# include <stdbool.h>
+# include <uchar.h>
+/* Enumerations: */
+/* Type definitions: */
+/* Structures: */
+struct u8c_isalnum_tuple {
+	bool res;
+	bool stat;
+};
+struct u8c_isalpha_tuple {
+	bool res;
+	bool stat;
+};
+struct u8c_iscntrl_tuple {
+	bool res;
+	bool stat;
+};
+struct u8c_isdigit_tuple {
+	bool res;
+	bool stat;
+};
+struct u8c_islower_tuple {
+	bool res;
+	bool stat;
+};
+struct u8c_ispunct_tuple {
+	bool res;
+	bool stat;
+};
+struct u8c_isspace_tuple {
+	bool res;
+	bool stat;
+};
+struct u8c_issurro_tuple {
+	bool res;
+	bool stat;
+};
+struct u8c_isupper_tuple {
+	bool res;
+	bool stat;
+};
+struct u8c_isxdigit_tuple {
+	bool res;
+	bool stat;
+};
+/* Functions: */
+extern struct u8c_isalnum_tuple  u8c_isalnum( char32_t const chr); /* Is alphanumeric */
+extern struct u8c_isalpha_tuple  u8c_isalpha( char32_t const chr); /* Is alphabetic */
+extern struct u8c_iscntrl_tuple  u8c_iscntrl( char32_t const chr); /* Is control character */
+extern struct u8c_isdigit_tuple  u8c_isdigit( char32_t const chr); /* Is digit */
+extern struct u8c_islower_tuple  u8c_islower( char32_t const chr); /* Is lowercase */
+extern struct u8c_ispunct_tuple  u8c_ispunct( char32_t const chr); /* Is punctuation */
+extern struct u8c_isspace_tuple  u8c_isspace( char32_t const chr); /* Is space */
+extern struct u8c_issurro_tuple  u8c_issurro( char32_t const chr); /* Is surrogate point */
+extern struct u8c_isupper_tuple  u8c_isupper( char32_t const chr); /* Is uppercase */
+extern struct u8c_isxdigit_tuple u8c_isxdigit(char32_t const chr); /* Is hexadecimal digit */
+/* Constants & Variables: */
+/* Macros: */
+# endif