totp

applications/plugins/totp/services/hmac/u64.h

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+/* uint64_t-like operations that work even on hosts lacking uint64_t
+
+   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+
+   This file 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 2.1 of the
+   License, or (at your option) any later version.
+
+   This file 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 <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert.  */
+
+#pragma once
+
+#include <stdint.h>
+
+#ifndef _GL_U64_INLINE
+# define _GL_U64_INLINE _GL_INLINE
+#endif
+
+/* Return X rotated left by N bits, where 0 < N < 64.  */
+#define u64rol(x, n) u64or (u64shl (x, n), u64shr (x, 64 - n))
+
+/* Native implementations are trivial.  See below for comments on what
+   these operations do.  */
+typedef uint64_t u64;
+# define u64hilo(hi, lo) ((u64) (((u64) (hi) << 32) + (lo)))
+# define u64init(hi, lo) u64hilo (hi, lo)
+# define u64lo(x) ((u64) (x))
+# define u64size(x) u64lo (x)
+# define u64lt(x, y) ((x) < (y))
+# define u64and(x, y) ((x) & (y))
+# define u64or(x, y) ((x) | (y))
+# define u64xor(x, y) ((x) ^ (y))
+# define u64plus(x, y) ((x) + (y))
+# define u64shl(x, n) ((x) << (n))
+# define u64shr(x, n) ((x) >> (n))