Can you help me write an assembler box right in the cycle?

[Anderson]

I tried to write a box but it didn't work. The commentary points out what the box should do.

#include<stdio.h>
#include<math.h>
#include<locale.h>
#include<malloc.h>
#include<stdlib.h>
int main()

{

setlocale (0, "");

double x, mo, s;

int n, i;
double *X = &x;

double *MO = &mo;

double *S = &s;

int *N = &n;

int *I = &i;
printf("Vvedite kolichestvo chisel v massive \n");

printf("n:");

if (scanf("%d", &n))

{

double a[n];

double *A = &a[i];

mo=0;

printf("Vvedite znacheniya elementov \n");

for (i = 0; i<n; i++)

{

printf("a[%d] = ", i);

if (!(scanf("%lf", &a[i])))

{

printf("Error. Vvedeni nepravelnie dannie\n");

break;

}
else
{
//mo=mo+a[i];
asm
(
    ".intel_syntax noprefix \n\t"
    "mov ax, [%1] \n\t"
    "mov bx, [%2] \n\t"
    "add ax, bx \n\t"
    "mov [%0], ax \n\t"
    : "=r"(MO)
    : "r"(MO), "r"(A[I])
    : "%ax", "%bx"
);
if (i==(n-1))
{
    printf("Mat ogidanie: %lf\n", mo);
    s=mo/n;
    printf("Srednekvadratichnoe otklonenie: %lf\n", s); 
}
}

}

}

else printf("Error. Vvedeni nepravelnie dannie\n");

return 0;

}

[tahishae]

In your case, there are two options.

---

First

For double Use float and use the co-processor's team peacefully x87:

__asm__(
    "FLDS %1 \n" // mo
    "FADDS %2 \n" // mo + a[i]
    "FSTPS %0 \n" // mo
    : "=m"(mo)
    : "m"(mo), "m"(a[i])
    : );

Second

Use a set of SSE instructions, which is much more painful. I don't recommend doing this through the ass box, you can just go through the sie.