#include <testLimits.h>

#include "halfLimits.h"

#include <iostream>

#include <assert.h>

using namespace std;

namespace {

float

mypow (int x, int y)

{

    bool negative = false;

    if (y < 0)

    {

	negative = true;

	y = -y;

    }

    float z = 1;

    while (y > 0)

    {

	z *= x;

	y -= 1;

    }

    if (negative)

	z = 1 / z;

    return z;

}

} // namespace

void

testLimits()

{

    cout << "values in std::numeric_limits<half>\n";

    cout << "min_exponent\n";

    {

	half h (mypow (2, numeric_limits<half>::min_exponent - 1));

	assert (h.isNormalized());

    }

    {

	half h (mypow (2, numeric_limits<half>::min_exponent - 2));

	assert (h.isDenormalized());

    }

    cout << "max_exponent\n";

    {

	half h (mypow (2, numeric_limits<half>::max_exponent - 1));

	assert (h.isNormalized());

    }

    {

	half h (mypow (2, numeric_limits<half>::max_exponent));

	assert (h.isInfinity());

    }

    cout << "min_exponent10\n";

    {

	half h (mypow (10, numeric_limits<half>::min_exponent10));

	assert (h.isNormalized());

    }

    {

	half h (mypow (10, numeric_limits<half>::min_exponent10 - 1));

	assert (h.isDenormalized());

    }

    cout << "max_exponent10\n";

    {

	half h (mypow (10, numeric_limits<half>::max_exponent10));

	assert (h.isNormalized());

    }

    {

	half h (mypow (10, numeric_limits<half>::max_exponent10 + 1));

	assert (h.isInfinity());

    }

    cout << "ok\n\n" << flush;

}