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Diffstat (limited to 'gl/lib/u64.h')
-rw-r--r-- | gl/lib/u64.h | 159 |
1 files changed, 0 insertions, 159 deletions
diff --git a/gl/lib/u64.h b/gl/lib/u64.h deleted file mode 100644 index 34fd32be0..000000000 --- a/gl/lib/u64.h +++ /dev/null @@ -1,159 +0,0 @@ -/* uint64_t-like operations that work even on hosts lacking uint64_t - - Copyright (C) 2006 Free Software Foundation, Inc. - - This program is free software: you can redistribute it and/or modify - it under the terms of the GNU 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 General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see <http://www.gnu.org/licenses/>. */ - -/* Written by Paul Eggert. */ - -#include <stddef.h> -#include <stdint.h> - -/* Return X rotated left by N bits, where 0 < N < 64. */ -#define u64rol(x, n) u64or (u64shl (x, n), u64shr (x, 64 - n)) - -#ifdef UINT64_MAX - -/* 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 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)) - -#else - -/* u64 is a 64-bit unsigned integer value. - u64init (HI, LO), is like u64hilo (HI, LO), but for use in - initializer contexts. */ -# ifdef WORDS_BIGENDIAN -typedef struct { uint32_t hi, lo; } u64; -# define u64init(hi, lo) { hi, lo } -# else -typedef struct { uint32_t lo, hi; } u64; -# define u64init(hi, lo) { lo, hi } -# endif - -/* Given the high and low-order 32-bit quantities HI and LO, return a u64 - value representing (HI << 32) + LO. */ -static inline u64 -u64hilo (uint32_t hi, uint32_t lo) -{ - u64 r; - r.hi = hi; - r.lo = lo; - return r; -} - -/* Return a u64 value representing LO. */ -static inline u64 -u64lo (uint32_t lo) -{ - u64 r; - r.hi = 0; - r.lo = lo; - return r; -} - -/* Return X < Y. */ -static inline int -u64lt (u64 x, u64 y) -{ - return x.hi < y.hi || (x.hi == y.hi && x.lo < y.lo); -} - -/* Return X & Y. */ -static inline u64 -u64and (u64 x, u64 y) -{ - u64 r; - r.hi = x.hi & y.hi; - r.lo = x.lo & y.lo; - return r; -} - -/* Return X | Y. */ -static inline u64 -u64or (u64 x, u64 y) -{ - u64 r; - r.hi = x.hi | y.hi; - r.lo = x.lo | y.lo; - return r; -} - -/* Return X ^ Y. */ -static inline u64 -u64xor (u64 x, u64 y) -{ - u64 r; - r.hi = x.hi ^ y.hi; - r.lo = x.lo ^ y.lo; - return r; -} - -/* Return X + Y. */ -static inline u64 -u64plus (u64 x, u64 y) -{ - u64 r; - r.lo = x.lo + y.lo; - r.hi = x.hi + y.hi + (r.lo < x.lo); - return r; -} - -/* Return X << N. */ -static inline u64 -u64shl (u64 x, int n) -{ - u64 r; - if (n < 32) - { - r.hi = (x.hi << n) | (x.lo >> (32 - n)); - r.lo = x.lo << n; - } - else - { - r.hi = x.lo << (n - 32); - r.lo = 0; - } - return r; -} - -/* Return X >> N. */ -static inline u64 -u64shr (u64 x, int n) -{ - u64 r; - if (n < 32) - { - r.hi = x.hi >> n; - r.lo = (x.hi << (32 - n)) | (x.lo >> n); - } - else - { - r.hi = 0; - r.lo = x.hi >> (n - 32); - } - return r; -} - -#endif |