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930f458979
replace double-slash comments with old-skool slash asterisk ones; define uint16_t etc for Windows ourselves and remove ms_stdint.h & stdint_msvc.h as no longer used; (backend (excepting test suite) now C89 compatible) LICENSE: move from backend to root and move COPYING to frontend, with copies in frontend_qt & backend_qt, so in where it applies; add LICENSE section from manual to root README
77 lines
3.0 KiB
C
77 lines
3.0 KiB
C
/* large.h - Handles binary manipulation of large numbers */
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/*
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libzint - the open source barcode library
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Copyright (C) 2008-2022 Robin Stuart <rstuart114@gmail.com>
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. Neither the name of the project nor the names of its contributors
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may be used to endorse or promote products derived from this software
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without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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SUCH DAMAGE.
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*/
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/* SPDX-License-Identifier: BSD-3-Clause */
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#ifndef Z_LARGE_H
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#define Z_LARGE_H
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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typedef struct { uint64_t lo; uint64_t hi; } large_int;
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#define large_lo(s) ((s)->lo)
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#define large_hi(s) ((s)->hi)
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/* Set 128-bit `t` from 128-bit `s` */
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#define large_load(t, s) do { *(t) = *(s); } while (0)
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/* Set 128-bit `t` from 64-bit `s` */
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#define large_load_u64(t, s) do { (t)->lo = (s); (t)->hi = 0; } while (0)
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INTERNAL void large_load_str_u64(large_int *t, const unsigned char *s, const int length);
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INTERNAL void large_add(large_int *t, const large_int *s);
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INTERNAL void large_add_u64(large_int *t, const uint64_t s);
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INTERNAL void large_sub_u64(large_int *t, const uint64_t s);
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INTERNAL void large_mul_u64(large_int *t, const uint64_t s);
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INTERNAL uint64_t large_div_u64(large_int *t, uint64_t v);
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INTERNAL void large_unset_bit(large_int *t, const int bit);
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INTERNAL void large_uint_array(const large_int *t, unsigned int *uint_array, const int size, int bits);
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INTERNAL void large_uchar_array(const large_int *t, unsigned char *uchar_array, const int size, int bits);
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INTERNAL char *large_dump(const large_int *t, char *buf);
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INTERNAL void large_print(const large_int *t);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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/* vim: set ts=4 sw=4 et : */
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#endif /* Z_LARGE_H */
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