1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (C) 2007
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 */
6 /*
7 * Test for correctness of composite floating-point comparisons.
8 * Written by Paolo Bonzini, 26th May 2004.
9 * This file is originally a part of the GCC testsuite.
10 */
11
12 #include <common.h>
13
14 #include <post.h>
15
16 GNU_FPOST_ATTR
17
18 #if CONFIG_POST & CONFIG_SYS_POST_FPU
19
20 static int failed;
21
22 #define TEST(c) if ((c) != ok) failed++
23 #define ORD(a, b) (!__builtin_isunordered ((a), (b)))
24 #define UNORD(a, b) (__builtin_isunordered ((a), (b)))
25 #define UNEQ(a, b) (__builtin_isunordered ((a), (b)) || ((a) == (b)))
26 #define UNLT(a, b) (__builtin_isunordered ((a), (b)) || ((a) < (b)))
27 #define UNLE(a, b) (__builtin_isunordered ((a), (b)) || ((a) <= (b)))
28 #define UNGT(a, b) (__builtin_isunordered ((a), (b)) || ((a) > (b)))
29 #define UNGE(a, b) (__builtin_isunordered ((a), (b)) || ((a) >= (b)))
30 #define LTGT(a, b) (__builtin_islessgreater ((a), (b)))
31
32 static float pinf;
33 static float ninf;
34 static float NaN;
35
iuneq(float x,float y,int ok)36 static void iuneq (float x, float y, int ok)
37 {
38 TEST (UNEQ (x, y));
39 TEST (!LTGT (x, y));
40 TEST (UNLE (x, y) && UNGE (x,y));
41 }
42
ieq(float x,float y,int ok)43 static void ieq (float x, float y, int ok)
44 {
45 TEST (ORD (x, y) && UNEQ (x, y));
46 }
47
iltgt(float x,float y,int ok)48 static void iltgt (float x, float y, int ok)
49 {
50 TEST (!UNEQ (x, y)); /* Not optimizable. */
51 TEST (LTGT (x, y)); /* Same, __builtin_islessgreater does not trap. */
52 TEST (ORD (x, y) && (UNLT (x, y) || UNGT (x,y)));
53 }
54
ine(float x,float y,int ok)55 static void ine (float x, float y, int ok)
56 {
57 TEST (UNLT (x, y) || UNGT (x, y));
58 }
59
iunlt(float x,float y,int ok)60 static void iunlt (float x, float y, int ok)
61 {
62 TEST (UNLT (x, y));
63 TEST (UNORD (x, y) || (x < y));
64 }
65
ilt(float x,float y,int ok)66 static void ilt (float x, float y, int ok)
67 {
68 TEST (ORD (x, y) && UNLT (x, y)); /* Not optimized */
69 TEST ((x <= y) && (x != y));
70 TEST ((x <= y) && (y != x));
71 TEST ((x != y) && (x <= y)); /* Not optimized */
72 TEST ((y != x) && (x <= y)); /* Not optimized */
73 }
74
iunle(float x,float y,int ok)75 static void iunle (float x, float y, int ok)
76 {
77 TEST (UNLE (x, y));
78 TEST (UNORD (x, y) || (x <= y));
79 }
80
ile(float x,float y,int ok)81 static void ile (float x, float y, int ok)
82 {
83 TEST (ORD (x, y) && UNLE (x, y)); /* Not optimized */
84 TEST ((x < y) || (x == y));
85 TEST ((y > x) || (x == y));
86 TEST ((x == y) || (x < y)); /* Not optimized */
87 TEST ((y == x) || (x < y)); /* Not optimized */
88 }
89
iungt(float x,float y,int ok)90 static void iungt (float x, float y, int ok)
91 {
92 TEST (UNGT (x, y));
93 TEST (UNORD (x, y) || (x > y));
94 }
95
igt(float x,float y,int ok)96 static void igt (float x, float y, int ok)
97 {
98 TEST (ORD (x, y) && UNGT (x, y)); /* Not optimized */
99 TEST ((x >= y) && (x != y));
100 TEST ((x >= y) && (y != x));
101 TEST ((x != y) && (x >= y)); /* Not optimized */
102 TEST ((y != x) && (x >= y)); /* Not optimized */
103 }
104
iunge(float x,float y,int ok)105 static void iunge (float x, float y, int ok)
106 {
107 TEST (UNGE (x, y));
108 TEST (UNORD (x, y) || (x >= y));
109 }
110
ige(float x,float y,int ok)111 static void ige (float x, float y, int ok)
112 {
113 TEST (ORD (x, y) && UNGE (x, y)); /* Not optimized */
114 TEST ((x > y) || (x == y));
115 TEST ((y < x) || (x == y));
116 TEST ((x == y) || (x > y)); /* Not optimized */
117 TEST ((y == x) || (x > y)); /* Not optimized */
118 }
119
fpu_post_test_math6(void)120 int fpu_post_test_math6 (void)
121 {
122 pinf = __builtin_inf ();
123 ninf = -__builtin_inf ();
124 NaN = __builtin_nan ("");
125
126 iuneq (ninf, pinf, 0);
127 iuneq (NaN, NaN, 1);
128 iuneq (pinf, ninf, 0);
129 iuneq (1, 4, 0);
130 iuneq (3, 3, 1);
131 iuneq (5, 2, 0);
132
133 ieq (1, 4, 0);
134 ieq (3, 3, 1);
135 ieq (5, 2, 0);
136
137 iltgt (ninf, pinf, 1);
138 iltgt (NaN, NaN, 0);
139 iltgt (pinf, ninf, 1);
140 iltgt (1, 4, 1);
141 iltgt (3, 3, 0);
142 iltgt (5, 2, 1);
143
144 ine (1, 4, 1);
145 ine (3, 3, 0);
146 ine (5, 2, 1);
147
148 iunlt (NaN, ninf, 1);
149 iunlt (pinf, NaN, 1);
150 iunlt (pinf, ninf, 0);
151 iunlt (pinf, pinf, 0);
152 iunlt (ninf, ninf, 0);
153 iunlt (1, 4, 1);
154 iunlt (3, 3, 0);
155 iunlt (5, 2, 0);
156
157 ilt (1, 4, 1);
158 ilt (3, 3, 0);
159 ilt (5, 2, 0);
160
161 iunle (NaN, ninf, 1);
162 iunle (pinf, NaN, 1);
163 iunle (pinf, ninf, 0);
164 iunle (pinf, pinf, 1);
165 iunle (ninf, ninf, 1);
166 iunle (1, 4, 1);
167 iunle (3, 3, 1);
168 iunle (5, 2, 0);
169
170 ile (1, 4, 1);
171 ile (3, 3, 1);
172 ile (5, 2, 0);
173
174 iungt (NaN, ninf, 1);
175 iungt (pinf, NaN, 1);
176 iungt (pinf, ninf, 1);
177 iungt (pinf, pinf, 0);
178 iungt (ninf, ninf, 0);
179 iungt (1, 4, 0);
180 iungt (3, 3, 0);
181 iungt (5, 2, 1);
182
183 igt (1, 4, 0);
184 igt (3, 3, 0);
185 igt (5, 2, 1);
186
187 iunge (NaN, ninf, 1);
188 iunge (pinf, NaN, 1);
189 iunge (ninf, pinf, 0);
190 iunge (pinf, pinf, 1);
191 iunge (ninf, ninf, 1);
192 iunge (1, 4, 0);
193 iunge (3, 3, 1);
194 iunge (5, 2, 1);
195
196 ige (1, 4, 0);
197 ige (3, 3, 1);
198 ige (5, 2, 1);
199
200 if (failed) {
201 post_log ("Error in FPU math6 test\n");
202 return -1;
203 }
204 return 0;
205 }
206
207 #endif /* CONFIG_POST & CONFIG_SYS_POST_FPU */
208