Steve Karg
136 lines
3.9 KiB
C
136 lines
3.9 KiB
C
/**
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* @file
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* @brief test linear interpolation APIs
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* @date 2010
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*
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* @section LICENSE
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* Copyright (c) 2010 Steve Karg <skarg@users.sourceforge.net>
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*
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* SPDX-License-Identifier: MIT
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*/
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#include <zephyr/ztest.h>
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#include <bacnet/basic/sys/linear.h>
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/**
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* @addtogroup bacnet_tests
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* @{
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*/
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/**
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* Unit Test for linear interpolation of floating point values, rounded
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*/
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void testLinearInterpolateRound(void)
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{
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uint16_t x2 = 0;
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uint16_t y1 = 0;
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uint16_t y2 = 0;
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uint16_t y3 = 0;
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uint16_t x2_test = 0;
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y2 = linear_interpolate_round(1, 1, 65535, 1, 100);
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zassert_equal(y2, 1, NULL);
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y2 = linear_interpolate_round(1, 1, 65535, 100, 1);
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zassert_equal(y2, 100, NULL);
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y2 = linear_interpolate_round(1, 65535, 65535, 1, 100);
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zassert_equal(y2, 100, NULL);
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y2 = linear_interpolate_round(1, 65535, 65535, 100, 1);
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zassert_equal(y2, 1, NULL);
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y2 = linear_interpolate_round(1, (65535 / 2), 65535, 1, 100);
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zassert_equal(y2, 50, NULL);
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y2 = linear_interpolate_round(1, (65535 / 4), 65535, 1, 100);
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zassert_equal(y2, 26, NULL);
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y2 = linear_interpolate_round(1, ((65535 * 3) / 4), 65535, 1, 100);
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zassert_equal(y2, 75, NULL);
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y2 = linear_interpolate_round(1, 1, 100, 1, 65535);
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zassert_equal(y2, 1, NULL);
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y2 = linear_interpolate_round(1, 100, 100, 1, 65535);
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zassert_equal(y2, 65535, NULL);
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y2 = linear_interpolate_round(1, 100 / 2, 100, 1, 65535);
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zassert_equal(y2, 32437, NULL);
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/* scaling from percent to steps and back */
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for (x2 = 1; x2 <= 100; x2++) {
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y2 = linear_interpolate_round(1, x2, 100, 1, 65535);
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x2_test = linear_interpolate_round(1, y2, 65535, 1, 100);
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zassert_equal(x2, x2_test, NULL);
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}
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/* test for low-trim, high-trim and scaling from percent to steps */
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for (x2 = 1; x2 <= 100; x2++) {
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y1 = linear_interpolate_round(1, 20, 100, 1, 65535);
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y3 = linear_interpolate_round(1, 80, 100, 1, 65535);
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y2 = linear_interpolate_round(1, x2, 100, y1, y3);
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x2_test = linear_interpolate_round(y1, y2, y3, 1, 100);
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zassert_equal(x2, x2_test, "x2=%hu x2_test=%hu\n", x2, x2_test);
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}
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y2 = linear_interpolate_round(1, 1, 65535, 20, 80);
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zassert_equal(y2, 20, NULL);
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y2 = linear_interpolate_round(1, 1, 65535, 80, 20);
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zassert_equal(y2, 80, NULL);
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y2 = linear_interpolate_round(1, 65535, 65535, 20, 80);
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zassert_equal(y2, 80, NULL);
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y2 = linear_interpolate_round(1, 65535, 65535, 80, 20);
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zassert_equal(y2, 20, NULL);
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}
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/**
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* Unit Test for linear interpolation of integers
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*/
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void testLinearInterpolateInt(void)
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{
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uint16_t y2 = 0;
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y2 = linear_interpolate_int(1, 1, 65535, 1, 100);
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zassert_equal(y2, 1, NULL);
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y2 = linear_interpolate_int(1, 1, 65535, 100, 1);
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zassert_equal(y2, 100, NULL);
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y2 = linear_interpolate_int(1, 65535, 65535, 1, 100);
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zassert_equal(y2, 100, NULL);
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y2 = linear_interpolate_int(1, 65535, 65535, 100, 1);
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zassert_equal(y2, 1, NULL);
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y2 = linear_interpolate_int(1, (65535 / 4), 65535, 1, 100);
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zassert_equal(y2, 25, NULL);
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y2 = linear_interpolate_int(1, (65535 / 2), 65535, 1, 100);
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zassert_equal(y2, 50, NULL);
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y2 = linear_interpolate_int(1, ((65535 * 3) / 4), 65535, 1, 100);
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zassert_equal(y2, 75, NULL);
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y2 = linear_interpolate_int(1, 1, 100, 1, 65535);
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zassert_equal(y2, 1, NULL);
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y2 = linear_interpolate_int(1, 100, 100, 1, 65535);
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zassert_equal(y2, 65535, NULL);
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y2 = linear_interpolate_int(1, 100 / 2, 100, 1, 65535);
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zassert_equal(y2, 32437, NULL);
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}
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/**
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* @}
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*/
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#if defined(CONFIG_ZTEST_NEW_API)
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ZTEST_SUITE(Linear_Interpolate, NULL, NULL, NULL, NULL, NULL);
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#else
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void test_main(void)
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{
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ztest_test_suite(
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Linear_Interpolate, ztest_unit_test(testLinearInterpolateRound),
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ztest_unit_test(testLinearInterpolateInt));
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ztest_run_test_suite(Linear_Interpolate);
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}
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#endif
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