sqr_toom2.c 文件参考

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

sqr_toom2.c 的引用(Include)关系图:

浏览源代码.

宏定义
#define	a0   numa
#define	a1   (numa + n)
#define	asm1   dst
#define	v0   dst
#define	vinf   (dst + 2 * n)

函数
void	lmmp_sqr_toom2_ (mp_ptr restrict dst, mp_srcptr restrict numa, mp_size_t na)

宏定义说明

a0

#define a0   numa

a1

#define a1   (numa + n)

asm1

#define asm1   dst

v0

#define v0   dst

vinf

#define vinf   (dst + 2 * n)

函数说明

lmmp_sqr_toom2_()

void lmmp_sqr_toom2_	(	mp_ptr restrict	dst,
		mp_srcptr restrict	numa,
		mp_size_t	na
	)

在文件 sqr_toom2.c 第 21 行定义.

                                                                                 {
    lmmp_param_assert(na > 0);
    lmmp_param_assert(dst != NULL);
    lmmp_param_assert(numa!= NULL);
    TEMP_S_DECL;
    mp_size_t s = na >> 1, n = na - s;
    mp_limb_t* vm1 = SALLOC_TYPE(2 * n, mp_limb_t);
    mp_slimb_t cy, cy2;
 
#define a0 numa
#define a1 (numa + n)
#define asm1 dst
 
    if (s == n) {
        if (lmmp_cmp_(a0, a1, n) < 0)
            lmmp_sub_n_(asm1, a1, a0, n);
        else
            lmmp_sub_n_(asm1, a0, a1, n);
    } else {  // s==n-1
        if (a0[s] == 0 && lmmp_cmp_(a0, a1, s) < 0) {
            lmmp_sub_n_(asm1, a1, a0, s);
            asm1[s] = 0;
        } else
            asm1[s] = a0[s] - lmmp_sub_n_(asm1, a0, a1, s);
    }
 
    lmmp_sqr_(vm1, asm1, n);
 
#undef asm1
#define v0 dst
#define vinf (dst + 2 * n)
 
    lmmp_sqr_(v0, a0, n);
 
    lmmp_sqr_(vinf, a1, s);
 
    cy = lmmp_add_n_(dst + 2 * n, v0 + n, vinf, n);
    cy2 = cy + lmmp_add_n_(dst + n, dst + 2 * n, v0, n);
    cy += lmmp_add_(dst + 2 * n, dst + 2 * n, n, vinf + n, s + s - n);
 
    cy -= lmmp_sub_n_(dst + n, dst + n, vm1, 2 * n);
 
    // no overflow.
    lmmp_inc_1(dst + 2 * n, cy2);
 
    if (cy < 0)
        lmmp_dec(dst + 3 * n);
    else
        lmmp_inc_1(dst + 3 * n, cy);
    TEMP_S_FREE;
}

引用了 a0, a1, asm1, lmmp_add_(), lmmp_add_n_(), lmmp_cmp_(), lmmp_dec, lmmp_inc_1, lmmp_param_assert, lmmp_sqr_(), lmmp_sub_n_(), SALLOC_TYPE, TEMP_S_DECL, TEMP_S_FREE, v0, vinf , 以及 vm1.

函数调用图: