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/* Copyright (c) 2014 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.
*
* Test motion sense code.
*/
#include <math.h>
#include <stdio.h>
#include "common.h"
#include "math_util.h"
#include "motion_sense.h"
#include "test_util.h"
#include "util.h"
/*****************************************************************************/
/*
* Need to define motion sensor globals just to compile.
* We include motion task to force the inclusion of math_util.c
*/
struct motion_sensor_t motion_sensors[] = {};
const unsigned int motion_sensor_count = ARRAY_SIZE(motion_sensors);
/*****************************************************************************/
/* Test utilities */
/* Macro to compare two floats and check if they are equal within diff. */
#define IS_FLOAT_EQUAL(a, b, diff) ((a) >= ((b) - diff) && (a) <= ((b) + diff))
#define ACOS_TOLERANCE_DEG 0.5f
#define RAD_TO_DEG (180.0f / 3.1415926f)
static int test_acos(void)
{
float a, b;
float test;
/* Test a handful of values. */
for (test = -1.0; test <= 1.0; test += 0.01) {
a = FP_TO_FLOAT(arc_cos(FLOAT_TO_FP(test)));
b = acos(test) * RAD_TO_DEG;
TEST_ASSERT(IS_FLOAT_EQUAL(a, b, ACOS_TOLERANCE_DEG));
}
return EC_SUCCESS;
}
void run_test(void)
{
test_reset();
RUN_TEST(test_acos);
test_print_result();
}
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