div_basecase.c 文件参考

#include "../../../include/lammp/impl/mparam.h"
#include "../../../include/lammp/lmmpn.h"

div_basecase.c 的引用(Include)关系图:

浏览源代码.

函数
mp_limb_t	lmmp_div_basecase_ (mp_ptr restrict dstq, mp_ptr restrict numa, mp_size_t na, mp_srcptr restrict numb, mp_size_t nb, mp_limb_t inv21)
	Copyright (C) 2026 HJimmyK(Jericho Knox)

函数说明

lmmp_div_basecase_()

mp_limb_t lmmp_div_basecase_	(	mp_ptr restrict	dstq,
		mp_ptr restrict	numa,
		mp_size_t	na,
		mp_srcptr restrict	numb,
		mp_size_t	nb,
		mp_limb_t	inv21
	)

Copyright (C) 2026 HJimmyK(Jericho Knox)

This file is part of LAMMP.

LAMMP is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License (LGPL) as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.

This program is distributed WITHOUT ANY WARRANTY.

See https://www.gnu.org/licenses/.

在文件 div_basecase.c 第 20 行定义.

  {
    lmmp_param_assert(na >= nb);
    lmmp_param_assert(nb >= 3);
    lmmp_param_assert(numb[nb - 1] >= LIMB_B_2);
    mp_size_t nq = na - nb;
 
    numa += na;
 
    mp_limb_t qh = lmmp_cmp_(numa - nb, numb, nb) >= 0;
    if (qh) {
        lmmp_sub_n_(numa - nb, numa - nb, numb, nb);
    }
 
    nb -= 2;
    numa -= 2;
 
    mp_limb_t d1 = numb[nb + 1], d0 = numb[nb + 0];
 
    while (nq) {
        mp_limb_t q;
        --numa;
        if (numa[2] == d1 && numa[1] == d0) {
            q = LIMB_MAX;
            lmmp_submul_1_(numa - nb, numb, nb + 2, q);
        } else {
            mp_limb_t cy, cy1;
            q = lmmp_div_3_2_(numa, numb + nb, inv21);
            cy = lmmp_submul_1_(numa - nb, numb, nb, q);
            cy1 = numa[0] < cy;
            numa[0] -= cy;
            cy = numa[1] < cy1;
            numa[1] -= cy1;
            if (cy) {
                lmmp_add_n_(numa - nb, numa - nb, numb, nb + 2);
                --q;
            }
        }
        dstq[--nq] = q;
    }
    return qh;
}

引用了 LIMB_B_2, LIMB_MAX, lmmp_add_n_(), lmmp_cmp_(), lmmp_div_3_2_(), lmmp_param_assert, lmmp_sub_n_(), lmmp_submul_1_(), n , 以及 numb.

函数调用图: