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45 lines
1.5 KiB
C
45 lines
1.5 KiB
C
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/* uint64_t-like operations that work even on hosts lacking uint64_t
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Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
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This file is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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This file is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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/* Written by Paul Eggert. */
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#pragma once
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#include <stdint.h>
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#ifndef _GL_U64_INLINE
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#define _GL_U64_INLINE _GL_INLINE
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#endif
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/* Return X rotated left by N bits, where 0 < N < 64. */
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#define u64rol(x, n) u64or(u64shl(x, n), u64shr(x, 64 - (n)))
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/* Native implementations are trivial. See below for comments on what
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these operations do. */
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typedef uint64_t u64;
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#define u64hilo(hi, lo) ((u64)(((u64)(hi) << 32) + (lo)))
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#define u64init(hi, lo) u64hilo(hi, lo)
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#define u64lo(x) ((u64)(x))
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#define u64size(x) u64lo(x)
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#define u64lt(x, y) ((x) < (y))
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#define u64and(x, y) ((x) & (y))
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#define u64or(x, y) ((x) | (y))
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#define u64xor(x, y) ((x) ^ (y))
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#define u64plus(x, y) ((x) + (y))
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#define u64shl(x, n) ((x) << (n))
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#define u64shr(x, n) ((x) >> (n))
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