example_float.cc


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// -*-C++-*-

#include "vecmathlib.h"

#include <iostream>

using namespace std;
using namespace vecmathlib;

int main(int argc, char **argv) {
  // Declare a float precision vector with an architecture-dependent
  // number of elements
  float32_vec x;
  // Set each element separately. This is inefficient and should be
  // avoided if possible, but we want to demonstrate it here anyway.
  for (int i = 0; i < float32_vec::size; ++i)
    x.set_elt(i, float(i));
  float32_vec y = x + float32_vec(1.0);
  y = sqrt(y);
  float32_vec z = log(y);

  // Boolean vectors are closely related to either float or float
  // vectors, thus we need to make a distinction
  bool32_vec b = x < y;
  // Integer vectors are closely related to either float or float,
  // thus we need to make a distinction -- there is "int_vec"
  // corresponding to "float32_vec", and there is "int_vec"
  // correpsonding to "float32_vec".
  int32_vec i = convert_int(y);

  cout << "x=" << x << "\n";
  cout << "y=" << y << "\n";
  cout << "z=" << z << "\n";
  cout << "b=" << b << "\n";
  cout << "i=" << i << "\n";

  return 0;
}