C / C++ / MFC

// truncate 3 places to the right of the decimal
float f1 = 4./3.;
float f2 = (float)((int)(f1 * 1000.0)) / 1000.0;

#include <math.h>
#include <stdio.h>


double truncate(double Num, double Seed)
{
	 // get rational factor
    double fac = Num / Seed;

    // get natural factor
    fac = (fac < 0) ? (ceil(fac)) : (floor(fac));
	// fac = (fac < 0) ? static_cast<int>(fac-0.5) : static_cast<int>(fac+0.5);

    // return multiple
    return fac * Seed;
}

int main()
{
	double val = 4./3.;

	printf("%6.4f\n",truncate(val,1e-04));

	return 0;
}

Adnan Merter wrote:

is there someone who can suggest me a method to do this job?

Adnan Merter wrote:

it is hard to input data to microcontroller instantly

Adnan Merter wrote:

it is not user-frienly
i need to run upto 8 motors at the same time and
also, i am not good at programming pics

Adnan Merter wrote:

i have to use computer

Adnan Merter wrote:

you suggest me to keep my comp busy?

#include <windows.h>
#include <process.h>
#include <stdio.h>

unsigned __stdcall TF(void* arg) {
  HANDLE timer=(HANDLE) arg;

  while (1) {
    WaitForSingleObject(timer,INFINITE);
    printf(".");
  }

}

int main(int argc, char* argv[]) {

  HANDLE timer = CreateWaitableTimer(
    0,
    false, // false=>will be automatically reset
    0);    // name

  LARGE_INTEGER li;

  const int unitsPerSecond=10*1000*1000; // 100 nano seconds

  // Set the event the first time 2 seconds
  // after calling SetWaitableTimer

  li.QuadPart=-(2*unitsPerSecond);
  SetWaitableTimer(
    timer,
    &li,
    750,   // Set the event every 750 milli Seconds
    0,
    0,
    false);

  _beginthreadex(0,0,TF,(void*) timer,0,0);

  // Wait forever, 
  while (1) ;

  return 0;
}