Mercurial > gnulib
view lib/u64.h @ 17473:1f9070ef79b0
headers: check that _GL_INLINE_HEADER_BEGIN is defined
Suggested by Bruce Korb in:
http://lists.gnu.org/archive/html/bug-gnulib/2013-08/msg00070.html
* doc/extern-inline.texi (extern inline):
Suggest checking that _GL_INLINE_HEADER_BEGIN is defined.
* lib/acl-internal.h, lib/argp-fmtstream.h, lib/argp.h:
* lib/binary-io.h, lib/bitrotate.h, lib/count-leading-zeros.h:
* lib/count-one-bits.h, lib/eealloc.h, lib/execinfo.in.h:
* lib/gethrxtime.h, lib/gl_list.h, lib/gl_oset.h, lib/gl_xlist.h:
* lib/gl_xoset.h, lib/gl_xsublist.h, lib/glthread/cond.h:
* lib/glthread/thread.h, lib/math.in.h, lib/mbchar.h, lib/mbfile.h:
* lib/mbiter.h, lib/mbuiter.h, lib/openat.h, lib/pipe-filter-aux.h:
* lib/priv-set.h, lib/pthread.in.h, lib/savewd.h, lib/se-context.in.h:
* lib/se-selinux.in.h, lib/sig-handler.h, lib/stat-time.h:
* lib/sys_socket.in.h, lib/timespec.h, lib/u64.h, lib/unistd.in.h:
* lib/utimens.h, lib/wctype.in.h, lib/xalloc.h, lib/xsize.h:
* lib/xtime.h:
Check that _GL_INLINE_HEADER_BEGIN is defined.
author | Paul Eggert <eggert@cs.ucla.edu> |
---|---|
date | Wed, 28 Aug 2013 18:49:38 -0700 |
parents | e542fd46ad6f |
children | 344018b6e5d7 |
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/* uint64_t-like operations that work even on hosts lacking uint64_t Copyright (C) 2006, 2009-2013 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 <stdint.h> #ifndef _GL_INLINE_HEADER_BEGIN #error "Please include config.h first." #endif _GL_INLINE_HEADER_BEGIN #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)) #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 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)) #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. */ _GL_U64_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. */ _GL_U64_INLINE u64 u64lo (uint32_t lo) { u64 r; r.hi = 0; r.lo = lo; return r; } /* Return a u64 value representing SIZE. */ _GL_U64_INLINE u64 u64size (size_t size) { u64 r; r.hi = size >> 31 >> 1; r.lo = size; return r; } /* Return X < Y. */ _GL_U64_INLINE int u64lt (u64 x, u64 y) { return x.hi < y.hi || (x.hi == y.hi && x.lo < y.lo); } /* Return X & Y. */ _GL_U64_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. */ _GL_U64_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. */ _GL_U64_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. */ _GL_U64_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. */ _GL_U64_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. */ _GL_U64_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 _GL_INLINE_HEADER_END