1 files changed, 47 insertions, 0 deletions
diff --git a/src/u8c/is.h.d/isxdigit.c b/src/u8c/is.h.d/isxdigit.c
new file mode 100644
index 0000000..4a59b0d
--- /dev/null
+++ b/src/u8c/is.h.d/isxdigit.c
@@ -0,0 +1,47 @@
+/*
+	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/>.
+*/
+# include <assert.h>
+# include <stdbool.h>
+# include <stddef.h>
+# include <stdint.h>
+# include <u8c/is.h>
+bool u8c_isxdigit(uint_least8_t * const _res,char32_t const _chr) {
+	assert(_res != NULL);
+	switch(_chr) {
+	default:
+		*_res = UINT8_C(0x0);
+		break;
+	case U'0': /* DIGIT ZERO */
+	case U'1': /* DIGIT ONE */
+	case U'2': /* DIGIT TWO */
+	case U'3': /* DIGIT THREE */
+	case U'4': /* DIGIT FOUR */
+	case U'5': /* DIGIT FIVE */
+	case U'6': /* DIGIT SIX */
+	case U'7': /* DIGIT SEVEN */
+	case U'8': /* DIGIT EIGHT */
+	case U'9': /* DIGIT NINE */
+	case U'A': /* LATIN CAPITAL LETTER A */
+	case U'B': /* LATIN CAPITAL LETTER B */
+	case U'C': /* LATIN CAPITAL LETTER C */
+	case U'D': /* LATIN CAPITAL LETTER D */
+	case U'E': /* LATIN CAPITAL LETTER E */
+	case U'F': /* LATIN CAPITAL LETTER F */
+		*_res = UINT8_C(0x1);
+		break;
+	}
+	return false;
+}