Zeroing memory on Windows

I need some useful functions that faster than the original. (Original - C++'s functions)

For example:

#include <time.h>
#include <stdio.h>
#include <Windows.h>

struct TestMemory {
    double a,b,c;
};

void* __TestMemory__Sample=0;

int WINAPI WinMain(HINSTANCE h1,HINSTANCE h2,LPSTR str,int i) {
    AllocConsole();
    __TestMemory__Sample=calloc(1,sizeof(TestMemory));
    TestMemory* test=(TestMemory*)malloc(sizeof(TestMemory));
    clock_t c1=clock(),c2;
    for (int i=0;i<100000000;i++)
       memcpy(test,__TestMemory__Sample,sizeof(TestMemory));
    c1=clock()-c1;
    c2=clock();
    for (int i=0;i<100000000;i++)
       memset(test,0,sizeof(TestMemory));
    c2=clock()-c2;
    printf("memcpy: %d\nmemset: %d\nradio: %f (set/cpy)",c1,c2,c2/(float)c1);
    getchar();
}

Output:

memcpy: 1410
memset: 3250
radio: 2.304965 (set/cpy)

This function replace the current way to zero memory.

What it does:

1. Create a global pointer, first set with zeroed memory.
2. When you want to allocate zeroed memory, allocate memory with malloc and then copy the zeroed memory (global variable) to this memory.