/* Copyright 2022 The Chromium OS Authors. All rights reserved.
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#include <ztest.h>

#include "math.h"
#include "math_util.h"

ZTEST_USER(math, arc_cos__x_below_range)
{
	fp_t result = arc_cos(FLOAT_TO_FP(-1.1));

	zassert_within(result, FLOAT_TO_FP(180.0), FLOAT_TO_FP(1.0),
		       "arc_cos(-1.1) was %d", FP_TO_INT(result));
}

ZTEST_USER(math, arc_cos__x_above_range)
{
	fp_t result = arc_cos(FLOAT_TO_FP(1.1));

	zassert_within(result, FLOAT_TO_FP(0), FLOAT_TO_FP(1.0),
		       "arc_cos(1.1) was %d", FP_TO_INT(result));
}

ZTEST_USER(math, int_sqrtf)
{
	zassert_equal(int_sqrtf(0), 0, NULL);
	zassert_equal(int_sqrtf(15), 3, NULL);
	zassert_equal(int_sqrtf(25), 5, NULL);
	zassert_equal(int_sqrtf(1111088889), 33333, NULL);
	zassert_equal(int_sqrtf(123456789), 11111, NULL);
	zassert_equal(int_sqrtf(1000000000000000005), 1000000000, NULL);
}

ZTEST_USER(math, fp_sqrtf)
{
	zassert_within(fp_sqrtf(FLOAT_TO_FP(15)), FLOAT_TO_FP(3.872983),
		       FLOAT_TO_FP(0.001), NULL);
}