unit_tests/test_basic_math/test_interpolation_3d.cpp

Directory:	./
File:	unit_tests/test_basic_math/test_interpolation_3d.cpp
Date:	2025-10-03 00:57:22

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Lines:	100.0%	70	0	70
Functions:	100.0%	5	0	5
Branches:	41.4%	111	0	268
Decisions:	-%	0	-	0

  
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      /*
    
       * @file    test_interpolation_3d.cpp
    
       *
    
       *  Created on: Oct 17, 2013
    
       * @author Andrey Belomutskiy, (c) 2012-2020
    
       */
    
      #include "pch.h"
    
      #include <stdlib.h>
    
      #include "efi_interpolation.h"
    
      #define RPM_COUNT 5
    
      #define VALUE_COUNT 4
    
      float rpmBins[RPM_COUNT] = { 100, 200, 300, 400, 500 };
    
      scaled_channel<uint8_t, 1, 50> rpmBinsScaledByte[5] = { 100, 200, 300, 400, 500};
    
      float mafBins[VALUE_COUNT] = { 1, 2, 3, 4 };
    
      scaled_channel<int, 10> mafBinsScaledInt[VALUE_COUNT] = { 1, 2, 3, 4 };
    
      scaled_channel<uint8_t, 10> mafBinsScaledByte[VALUE_COUNT] = { 1, 2, 3, 4 };
    
      scaled_channel<uint32_t, 10000, 3> mapScaledChannel[VALUE_COUNT][RPM_COUNT] = {
    
      	{ 1, 2, 3, 4, 4},
    
      	{ 2, 3, 4, 200, 200 },
    
      	{ 3, 4, 200, 500, 500 },
    
      	{ 4, 5, 300, 600, 600 },
    
      };
    
      float map[VALUE_COUNT][RPM_COUNT] = {
    
      	{ 1, 2, 3, 4, 4},
    
      	{ 2, 3, 4, 200, 200 },
    
      	{ 3, 4, 200, 500, 500 },
    
      	{ 4, 5, 300, 600, 600 },
    
      };
    
      30
      static float getValue(float rpm, float maf) {
    
      30
      	Map3D<RPM_COUNT, VALUE_COUNT, float, float, float> x1{"x"};
    
      	// note "5, 4" above
    
      	// note "map[4][5], Bins[4], rpm[5] below
    
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      30
      	x1.initTable(map, rpmBins, mafBins);
    
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      30
      	float result1 = x1.getValue(rpm, maf);
    
      30
      	Map3D<RPM_COUNT, VALUE_COUNT, float, float, int> x2{"x"};
    
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      30
      	x2.initTable(map, rpmBins, mafBinsScaledInt);
    
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      30
      	float result2 = x2.getValue(rpm, maf);
    
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      30
      	EXPECT_NEAR_M4(result1, result2);
    
      30
      	Map3D<RPM_COUNT, VALUE_COUNT, float, float, uint8_t> x3{"x"};
    
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      30
      	x3.initTable(map, rpmBins, mafBinsScaledByte);
    
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      30
      	float result3 = x3.getValue(rpm, maf);
    
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      30
      	EXPECT_NEAR_M4(result1, result3);
    
      30
      	Map3D<RPM_COUNT, VALUE_COUNT, float, uint8_t, float> x4{"x"};
    
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      30
      	x4.initTable(map, rpmBinsScaledByte, mafBins);
    
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      30
      	float result4 = x4.getValue(rpm, maf);
    
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      30
      	EXPECT_NEAR_M4(result1, result4);
    
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      30
      	float result5 = interpolate3d(
    
      		map,
    
      		mafBinsScaledInt, maf,
    
      		rpmBinsScaledByte, rpm
    
      	);
    
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      30
      	EXPECT_NEAR_M4(result1, result5);
    
      	// Test with values stored in scaled bytes
    
      30
      	Map3D<RPM_COUNT, VALUE_COUNT, uint32_t, float, float> x6{"x"};
    
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      30
      	x6.initTable(mapScaledChannel, rpmBins, mafBins);
    
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      30
      	float result6 = x6.getValue(rpm, maf);
    
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      30
      	EXPECT_NEAR(result1, result6, 1e-3);
    
      60
      	return result1;
    
      }
    
      1
      static void newTestToComfirmInterpolation() {
    
      // here's how the table loos like:
    
      //
    
      //__RPM_
    
      //__300_|_10|200|
    
      //__200_|__3|__4|
    
      //______|__2|__3|_LOAD
    
      1
      	map[1][2] = 10;
    
      1
      	mapScaledChannel[1][2] = 10;
    
      	// let's start by testing corners
    
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      1
      	EXPECT_NEAR_M4(3, getValue(/*rpm*/200, 2));
    
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      1
      	EXPECT_NEAR_M4(4, getValue(/*rpm*/200, 3)) << "low rpm high load";
    
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      1
      	EXPECT_NEAR_M4(10, getValue(/*rpm*/300, 2));
    
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      1
      	EXPECT_NEAR_M4(200, getValue(/*rpm*/300, 3));
    
      	// now testing middles of cell sides
    
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      1
      	EXPECT_NEAR_M4(3.5, getValue(/*rpm*/200, 2.5)) << "low rpm middle";
    
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      1
      	EXPECT_NEAR_M4(105, getValue(/*rpm*/300, 2.5)) << "high rpm";
    
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      1
      	EXPECT_NEAR_M4(6.5, getValue(/*rpm*/250, 2)) << "low load middle";
    
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      1
      	EXPECT_NEAR_M4(102, getValue(/*rpm*/250, 3));
    
      	// slowly go from middle side towards center
    
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      1
      	EXPECT_NEAR_M4(16.05, getValue(/*rpm*/250, 2.1)) << "middle @ 2.1";
    
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      1
      	EXPECT_NEAR_M4(25.6, getValue(/*rpm*/250, 2.2)) << "middle @ 2.2";
    
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      1
      	EXPECT_NEAR_M4(35.15, getValue(/*rpm*/250, 2.3)) << "middle @ 2.3";
    
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      1
      	EXPECT_NEAR_M4(54.25, getValue(/*rpm*/250, 2.5)) << "middle cell";
    
      	// issue #604: interpolation outside of the table
    
      	// X above the range
    
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      1
      	EXPECT_NEAR_M4(230, getValue(/*rpm*/800, 2.1)) << "800 @ 2.1";
    
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      1
      	EXPECT_NEAR_M4(290, getValue(/*rpm*/800, 2.3)) << "800 @ 2.3";
    
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      1
      	EXPECT_NEAR_M4(530, getValue(/*rpm*/800, 3.3)) << "800 @ 3.3";
    
      	// X below the range
    
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      1
      	EXPECT_NEAR_M4(2.1, getValue(/*rpm*/-810, 2.1)) << "-810 @ 2.1";
    
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      1
      	EXPECT_NEAR_M4(2.3, getValue(/*rpm*/-820, 2.3)) << "-820 @ 2.3";
    
      	// Y above the range
    
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      1
      	EXPECT_NEAR_M4(330, getValue(/*rpm*/310, 12.1)) << "310 @ 12.1";
    
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      1
      	EXPECT_NEAR_M4(360, getValue(/*rpm*/320, 12.3)) << "320 @ 12.3";
    
      	// Y below the range
    
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      1
      	EXPECT_NEAR_M4(3.1, getValue(/*rpm*/310, -12.1)) << "310 @ -12.1";
    
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      1
      	EXPECT_NEAR_M4(3.2, getValue(/*rpm*/320, -12.3)) << "320 @ -12.3";
    
      1
      }
    
      4
      TEST(misc, testInterpolate3d) {
    
      1
      	printf("*** no interpolation here 1\r\n");
    
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      1
      	EXPECT_NEAR_M4(2, getValue(100, 2));
    
      1
      	printf("*** no interpolation here 2\r\n");
    
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      1
      	EXPECT_NEAR_M4(5, getValue(200, 4));
    
      1
      	printf("*** rpm interpolated value expected1\r\n");
    
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      1
      	EXPECT_NEAR_M4(2.5, getValue(150, 2));
    
      1
      	printf("*** rpm interpolated value expected2\r\n");
    
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      1
      	EXPECT_NEAR_M4(102, getValue(250, 3));
    
      1
      	printf("*** both rpm and maf interpolated value expected\r\n");
    
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      1
      	EXPECT_NEAR_M4(361, getValue(335.3, 3.551));
    
      1
      	printf("*** both rpm and maf interpolated value expected 2\r\n");
    
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      1
      	EXPECT_NEAR_M4(203.6, getValue(410.01, 2.012));
    
      1
      	printf("*** both rpm and maf interpolated value expected 3\r\n");
    
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      1
      	EXPECT_NEAR_M4(600, getValue(1000000, 1000));
    
      1
      	printf("*** both rpm and maf interpolated value expected 4\r\n");
    
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      1
      	EXPECT_NEAR_M4(4, getValue(410.01, -1));
    
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      1
      	EXPECT_NEAR_M4(1, getValue(-1, -1));
    
      1
      	newTestToComfirmInterpolation();
    
      1
      }

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1			/*
2			* @file test_interpolation_3d.cpp
3			*
4			* Created on: Oct 17, 2013
5			* @author Andrey Belomutskiy, (c) 2012-2020
6			*/
7
8			#include "pch.h"
9
10			#include <stdlib.h>
11
12			#include "efi_interpolation.h"
13
14			#define RPM_COUNT 5
15			#define VALUE_COUNT 4
16
17			float rpmBins[RPM_COUNT] = { 100, 200, 300, 400, 500 };
18			scaled_channel<uint8_t, 1, 50> rpmBinsScaledByte[5] = { 100, 200, 300, 400, 500};
19
20			float mafBins[VALUE_COUNT] = { 1, 2, 3, 4 };
21			scaled_channel<int, 10> mafBinsScaledInt[VALUE_COUNT] = { 1, 2, 3, 4 };
22			scaled_channel<uint8_t, 10> mafBinsScaledByte[VALUE_COUNT] = { 1, 2, 3, 4 };
23
24			scaled_channel<uint32_t, 10000, 3> mapScaledChannel[VALUE_COUNT][RPM_COUNT] = {
25			{ 1, 2, 3, 4, 4},
26			{ 2, 3, 4, 200, 200 },
27			{ 3, 4, 200, 500, 500 },
28			{ 4, 5, 300, 600, 600 },
29			};
30
31			float map[VALUE_COUNT][RPM_COUNT] = {
32			{ 1, 2, 3, 4, 4},
33			{ 2, 3, 4, 200, 200 },
34			{ 3, 4, 200, 500, 500 },
35			{ 4, 5, 300, 600, 600 },
36			};
37
38		30	static float getValue(float rpm, float maf) {
39		30	Map3D<RPM_COUNT, VALUE_COUNT, float, float, float> x1{"x"};
40			// note "5, 4" above
41			// note "map[4][5], Bins[4], rpm[5] below
42	1/1 ✓ Branch 1 taken 30 times.	30	x1.initTable(map, rpmBins, mafBins);
43	1/1 ✓ Branch 1 taken 30 times.	30	float result1 = x1.getValue(rpm, maf);
44
45
46		30	Map3D<RPM_COUNT, VALUE_COUNT, float, float, int> x2{"x"};
47	1/1 ✓ Branch 1 taken 30 times.	30	x2.initTable(map, rpmBins, mafBinsScaledInt);
48	1/1 ✓ Branch 1 taken 30 times.	30	float result2 = x2.getValue(rpm, maf);
49	2/6 ✓ Branch 2 taken 30 times. ✗ Branch 5 not taken. ✓ Branch 6 taken 30 times. ✗ Branch 9 not taken. ✗ Branch 14 not taken. ✗ Branch 17 not taken.	30	EXPECT_NEAR_M4(result1, result2);
50
51
52		30	Map3D<RPM_COUNT, VALUE_COUNT, float, float, uint8_t> x3{"x"};
53	1/1 ✓ Branch 1 taken 30 times.	30	x3.initTable(map, rpmBins, mafBinsScaledByte);
54	1/1 ✓ Branch 1 taken 30 times.	30	float result3 = x3.getValue(rpm, maf);
55	2/6 ✓ Branch 2 taken 30 times. ✗ Branch 5 not taken. ✓ Branch 6 taken 30 times. ✗ Branch 9 not taken. ✗ Branch 14 not taken. ✗ Branch 17 not taken.	30	EXPECT_NEAR_M4(result1, result3);
56
57		30	Map3D<RPM_COUNT, VALUE_COUNT, float, uint8_t, float> x4{"x"};
58	1/1 ✓ Branch 1 taken 30 times.	30	x4.initTable(map, rpmBinsScaledByte, mafBins);
59	1/1 ✓ Branch 1 taken 30 times.	30	float result4 = x4.getValue(rpm, maf);
60	2/6 ✓ Branch 2 taken 30 times. ✗ Branch 5 not taken. ✓ Branch 6 taken 30 times. ✗ Branch 9 not taken. ✗ Branch 14 not taken. ✗ Branch 17 not taken.	30	EXPECT_NEAR_M4(result1, result4);
61
62	1/1 ✓ Branch 1 taken 30 times.	30	float result5 = interpolate3d(
63			map,
64			mafBinsScaledInt, maf,
65			rpmBinsScaledByte, rpm
66			);
67	2/6 ✓ Branch 2 taken 30 times. ✗ Branch 5 not taken. ✓ Branch 6 taken 30 times. ✗ Branch 9 not taken. ✗ Branch 14 not taken. ✗ Branch 17 not taken.	30	EXPECT_NEAR_M4(result1, result5);
68
69			// Test with values stored in scaled bytes
70		30	Map3D<RPM_COUNT, VALUE_COUNT, uint32_t, float, float> x6{"x"};
71	1/1 ✓ Branch 1 taken 30 times.	30	x6.initTable(mapScaledChannel, rpmBins, mafBins);
72	1/1 ✓ Branch 1 taken 30 times.	30	float result6 = x6.getValue(rpm, maf);
73	2/6 ✓ Branch 2 taken 30 times. ✗ Branch 5 not taken. ✓ Branch 6 taken 30 times. ✗ Branch 9 not taken. ✗ Branch 14 not taken. ✗ Branch 17 not taken.	30	EXPECT_NEAR(result1, result6, 1e-3);
74
75		60	return result1;
76			}
77
78		1	static void newTestToComfirmInterpolation() {
79			// here's how the table loos like:
80			//
81			//__RPM_
82			//__300_\|_10\|200\|
83			//__200_\|__3\|__4\|
84			//______\|__2\|__3\|_LOAD
85
86		1	map[1][2] = 10;
87		1	mapScaledChannel[1][2] = 10;
88
89
90			// let's start by testing corners
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93
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96
97			// now testing middles of cell sides
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100
101	3/8 ✓ Branch 2 taken 1 time. ✓ Branch 5 taken 1 time. ✗ Branch 8 not taken. ✓ Branch 9 taken 1 time. ✗ Branch 12 not taken. ✗ Branch 15 not taken. ✗ Branch 20 not taken. ✗ Branch 23 not taken.	1	EXPECT_NEAR_M4(6.5, getValue(/rpm/250, 2)) << "low load middle";
102	3/7 ✓ Branch 2 taken 1 time. ✓ Branch 5 taken 1 time. ✗ Branch 8 not taken. ✓ Branch 9 taken 1 time. ✗ Branch 12 not taken. ✗ Branch 17 not taken. ✗ Branch 20 not taken.	1	EXPECT_NEAR_M4(102, getValue(/rpm/250, 3));
103
104			// slowly go from middle side towards center
105	3/8 ✓ Branch 2 taken 1 time. ✓ Branch 5 taken 1 time. ✗ Branch 8 not taken. ✓ Branch 9 taken 1 time. ✗ Branch 12 not taken. ✗ Branch 15 not taken. ✗ Branch 20 not taken. ✗ Branch 23 not taken.	1	EXPECT_NEAR_M4(16.05, getValue(/rpm/250, 2.1)) << "middle @ 2.1";
106	3/8 ✓ Branch 2 taken 1 time. ✓ Branch 5 taken 1 time. ✗ Branch 8 not taken. ✓ Branch 9 taken 1 time. ✗ Branch 12 not taken. ✗ Branch 15 not taken. ✗ Branch 20 not taken. ✗ Branch 23 not taken.	1	EXPECT_NEAR_M4(25.6, getValue(/rpm/250, 2.2)) << "middle @ 2.2";
107	3/8 ✓ Branch 2 taken 1 time. ✓ Branch 5 taken 1 time. ✗ Branch 8 not taken. ✓ Branch 9 taken 1 time. ✗ Branch 12 not taken. ✗ Branch 15 not taken. ✗ Branch 20 not taken. ✗ Branch 23 not taken.	1	EXPECT_NEAR_M4(35.15, getValue(/rpm/250, 2.3)) << "middle @ 2.3";
108
109	3/8 ✓ Branch 2 taken 1 time. ✓ Branch 5 taken 1 time. ✗ Branch 8 not taken. ✓ Branch 9 taken 1 time. ✗ Branch 12 not taken. ✗ Branch 15 not taken. ✗ Branch 20 not taken. ✗ Branch 23 not taken.	1	EXPECT_NEAR_M4(54.25, getValue(/rpm/250, 2.5)) << "middle cell";
110
111			// issue #604: interpolation outside of the table
112			// X above the range
113	3/8 ✓ Branch 2 taken 1 time. ✓ Branch 5 taken 1 time. ✗ Branch 8 not taken. ✓ Branch 9 taken 1 time. ✗ Branch 12 not taken. ✗ Branch 15 not taken. ✗ Branch 20 not taken. ✗ Branch 23 not taken.	1	EXPECT_NEAR_M4(230, getValue(/rpm/800, 2.1)) << "800 @ 2.1";
114	3/8 ✓ Branch 2 taken 1 time. ✓ Branch 5 taken 1 time. ✗ Branch 8 not taken. ✓ Branch 9 taken 1 time. ✗ Branch 12 not taken. ✗ Branch 15 not taken. ✗ Branch 20 not taken. ✗ Branch 23 not taken.	1	EXPECT_NEAR_M4(290, getValue(/rpm/800, 2.3)) << "800 @ 2.3";
115	3/8 ✓ Branch 2 taken 1 time. ✓ Branch 5 taken 1 time. ✗ Branch 8 not taken. ✓ Branch 9 taken 1 time. ✗ Branch 12 not taken. ✗ Branch 15 not taken. ✗ Branch 20 not taken. ✗ Branch 23 not taken.	1	EXPECT_NEAR_M4(530, getValue(/rpm/800, 3.3)) << "800 @ 3.3";
116
117			// X below the range
118	3/8 ✓ Branch 2 taken 1 time. ✓ Branch 5 taken 1 time. ✗ Branch 8 not taken. ✓ Branch 9 taken 1 time. ✗ Branch 12 not taken. ✗ Branch 15 not taken. ✗ Branch 20 not taken. ✗ Branch 23 not taken.	1	EXPECT_NEAR_M4(2.1, getValue(/rpm/-810, 2.1)) << "-810 @ 2.1";
119	3/8 ✓ Branch 2 taken 1 time. ✓ Branch 5 taken 1 time. ✗ Branch 8 not taken. ✓ Branch 9 taken 1 time. ✗ Branch 12 not taken. ✗ Branch 15 not taken. ✗ Branch 20 not taken. ✗ Branch 23 not taken.	1	EXPECT_NEAR_M4(2.3, getValue(/rpm/-820, 2.3)) << "-820 @ 2.3";
120
121			// Y above the range
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123	3/8 ✓ Branch 2 taken 1 time. ✓ Branch 5 taken 1 time. ✗ Branch 8 not taken. ✓ Branch 9 taken 1 time. ✗ Branch 12 not taken. ✗ Branch 15 not taken. ✗ Branch 20 not taken. ✗ Branch 23 not taken.	1	EXPECT_NEAR_M4(360, getValue(/rpm/320, 12.3)) << "320 @ 12.3";
124
125			// Y below the range
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127	3/8 ✓ Branch 2 taken 1 time. ✓ Branch 5 taken 1 time. ✗ Branch 8 not taken. ✓ Branch 9 taken 1 time. ✗ Branch 12 not taken. ✗ Branch 15 not taken. ✗ Branch 20 not taken. ✗ Branch 23 not taken.	1	EXPECT_NEAR_M4(3.2, getValue(/rpm/320, -12.3)) << "320 @ -12.3";
128		1	}
129
130		4	TEST(misc, testInterpolate3d) {
131		1	printf("*** no interpolation here 1\r\n");
132	3/7 ✓ Branch 2 taken 1 time. ✓ Branch 5 taken 1 time. ✗ Branch 8 not taken. ✓ Branch 9 taken 1 time. ✗ Branch 12 not taken. ✗ Branch 17 not taken. ✗ Branch 20 not taken.	1	EXPECT_NEAR_M4(2, getValue(100, 2));
133
134		1	printf("*** no interpolation here 2\r\n");
135	3/7 ✓ Branch 2 taken 1 time. ✓ Branch 5 taken 1 time. ✗ Branch 8 not taken. ✓ Branch 9 taken 1 time. ✗ Branch 12 not taken. ✗ Branch 17 not taken. ✗ Branch 20 not taken.	1	EXPECT_NEAR_M4(5, getValue(200, 4));
136
137		1	printf("*** rpm interpolated value expected1\r\n");
138	3/7 ✓ Branch 2 taken 1 time. ✓ Branch 5 taken 1 time. ✗ Branch 8 not taken. ✓ Branch 9 taken 1 time. ✗ Branch 12 not taken. ✗ Branch 17 not taken. ✗ Branch 20 not taken.	1	EXPECT_NEAR_M4(2.5, getValue(150, 2));
139
140		1	printf("*** rpm interpolated value expected2\r\n");
141	3/7 ✓ Branch 2 taken 1 time. ✓ Branch 5 taken 1 time. ✗ Branch 8 not taken. ✓ Branch 9 taken 1 time. ✗ Branch 12 not taken. ✗ Branch 17 not taken. ✗ Branch 20 not taken.	1	EXPECT_NEAR_M4(102, getValue(250, 3));
142
143		1	printf("*** both rpm and maf interpolated value expected\r\n");
144	3/7 ✓ Branch 2 taken 1 time. ✓ Branch 5 taken 1 time. ✗ Branch 8 not taken. ✓ Branch 9 taken 1 time. ✗ Branch 12 not taken. ✗ Branch 17 not taken. ✗ Branch 20 not taken.	1	EXPECT_NEAR_M4(361, getValue(335.3, 3.551));
145
146		1	printf("*** both rpm and maf interpolated value expected 2\r\n");
147	3/7 ✓ Branch 2 taken 1 time. ✓ Branch 5 taken 1 time. ✗ Branch 8 not taken. ✓ Branch 9 taken 1 time. ✗ Branch 12 not taken. ✗ Branch 17 not taken. ✗ Branch 20 not taken.	1	EXPECT_NEAR_M4(203.6, getValue(410.01, 2.012));
148
149		1	printf("*** both rpm and maf interpolated value expected 3\r\n");
150	3/7 ✓ Branch 2 taken 1 time. ✓ Branch 5 taken 1 time. ✗ Branch 8 not taken. ✓ Branch 9 taken 1 time. ✗ Branch 12 not taken. ✗ Branch 17 not taken. ✗ Branch 20 not taken.	1	EXPECT_NEAR_M4(600, getValue(1000000, 1000));
151
152		1	printf("*** both rpm and maf interpolated value expected 4\r\n");
153
154	3/7 ✓ Branch 2 taken 1 time. ✓ Branch 5 taken 1 time. ✗ Branch 8 not taken. ✓ Branch 9 taken 1 time. ✗ Branch 12 not taken. ✗ Branch 17 not taken. ✗ Branch 20 not taken.	1	EXPECT_NEAR_M4(4, getValue(410.01, -1));
155
156
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158
159		1	newTestToComfirmInterpolation();
160		1	}
161

Function (Line)	Call count	Line coverage	Branch coverage	Block coverage
getValue(float, float) (line 38)	called 30 times	100.0%	51.2%	34.0%
misc_testInterpolate3d_Test::TestBody() (line 130)	called 1 time	100.0%	42.9%	27.0%
misc_testInterpolate3d_Test::misc_testInterpolate3d_Test() (line 130)	called 1 time	100.0%	-%	100.0%
misc_testInterpolate3d_Test::~misc_testInterpolate3d_Test() (line 130)	called 2 times	100.0%	-%	100.0%
newTestToComfirmInterpolation() (line 78)	called 1 time	100.0%	38.4%	24.0%