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- /* libgcc routines for MSP430
- Copyright (C) 2005-2022 Free Software Foundation, Inc.
- Contributed by Red Hat.
- This file is part of GCC.
- GCC 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, or (at your
- option) any later version.
- GCC 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.
- Under Section 7 of GPL version 3, you are granted additional
- permissions described in the GCC Runtime Library Exception, version
- 3.1, as published by the Free Software Foundation.
- You should have received a copy of the GNU General Public License and
- a copy of the GCC Runtime Library Exception along with this program;
- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
- <http://www.gnu.org/licenses/>. */
- UINT_TYPE C3(udivmod,NAME_MODE,4) (UINT_TYPE, UINT_TYPE, word_type);
- SINT_TYPE C3(__div,NAME_MODE,3) (SINT_TYPE, SINT_TYPE);
- SINT_TYPE C3(__mod,NAME_MODE,3) (SINT_TYPE, SINT_TYPE);
- UINT_TYPE C3(__udiv,NAME_MODE,3) (UINT_TYPE, UINT_TYPE);
- UINT_TYPE C3(__umod,NAME_MODE,3) (UINT_TYPE, UINT_TYPE);
- UINT_TYPE
- C3(udivmod,NAME_MODE,4) (UINT_TYPE num, UINT_TYPE den, word_type modwanted)
- {
- UINT_TYPE bit = 1;
- UINT_TYPE res = 0;
- while (den < num && bit && !(den & (1L << BITS_MINUS_1)))
- {
- den <<= 1;
- bit <<= 1;
- }
- while (bit)
- {
- if (num >= den)
- {
- num -= den;
- res |= bit;
- }
- bit >>= 1;
- den >>= 1;
- }
- if (modwanted)
- return num;
- return res;
- }
- SINT_TYPE
- C3(__div,NAME_MODE,3) (SINT_TYPE a, SINT_TYPE b)
- {
- word_type neg = 0;
- SINT_TYPE res;
- if (a < 0)
- {
- a = -a;
- neg = !neg;
- }
- if (b < 0)
- {
- b = -b;
- neg = !neg;
- }
- res = C3(udivmod,NAME_MODE,4) (a, b, 0);
- if (neg)
- res = -res;
- return res;
- }
- SINT_TYPE
- C3(__mod,NAME_MODE,3) (SINT_TYPE a, SINT_TYPE b)
- {
- word_type neg = 0;
- SINT_TYPE res;
- if (a < 0)
- {
- a = -a;
- neg = 1;
- }
- if (b < 0)
- b = -b;
- res = C3(udivmod,NAME_MODE,4) (a, b, 1);
- if (neg)
- res = -res;
- return res;
- }
- UINT_TYPE
- C3(__udiv,NAME_MODE,3) (UINT_TYPE a, UINT_TYPE b)
- {
- return C3(udivmod,NAME_MODE,4) (a, b, 0);
- }
- UINT_TYPE
- C3(__umod,NAME_MODE,3) (UINT_TYPE a, UINT_TYPE b)
- {
- return C3(udivmod,NAME_MODE,4) (a, b, 1);
- }
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