post/lib_ppc/fpu/compare-fp-1.c

   1 /*
   2  * Copyright (C) 2007
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23 /*
  24  * Test for correctness of composite floating-point comparisons.
  25  * Written by Paolo Bonzini, 26th May 2004.
  26  * This file is originally a part of the GCC testsuite.
  27  */
  28
  29 #include <common.h>
  30
  31 #include <post.h>
  32
  33 #if CONFIG_POST & CONFIG_SYS_POST_FPU
  34
  35 static int failed;
  36
  37 #define TEST(c) if ((c) != ok) failed++
  38 #define ORD(a, b) (!__builtin_isunordered ((a), (b)))
  39 #define UNORD(a, b) (__builtin_isunordered ((a), (b)))
  40 #define UNEQ(a, b) (__builtin_isunordered ((a), (b)) || ((a) == (b)))
  41 #define UNLT(a, b) (__builtin_isunordered ((a), (b)) || ((a) < (b)))
  42 #define UNLE(a, b) (__builtin_isunordered ((a), (b)) || ((a) <= (b)))
  43 #define UNGT(a, b) (__builtin_isunordered ((a), (b)) || ((a) > (b)))
  44 #define UNGE(a, b) (__builtin_isunordered ((a), (b)) || ((a) >= (b)))
  45 #define LTGT(a, b) (__builtin_islessgreater ((a), (b)))
  46
  47 static float pinf;
  48 static float ninf;
  49 static float NaN;
  50
  51 static void iuneq (float x, float y, int ok)
  52 {
  53         TEST (UNEQ (x, y));
  54         TEST (!LTGT (x, y));
  55         TEST (UNLE (x, y) && UNGE (x,y));
  56 }
  57
  58 static void ieq (float x, float y, int ok)
  59 {
  60         TEST (ORD (x, y) && UNEQ (x, y));
  61 }
  62
  63 static void iltgt (float x, float y, int ok)
  64 {
  65         TEST (!UNEQ (x, y)); /* Not optimizable. */
  66         TEST (LTGT (x, y)); /* Same, __builtin_islessgreater does not trap. */
  67         TEST (ORD (x, y) && (UNLT (x, y) || UNGT (x,y)));
  68 }
  69
  70 static void ine (float x, float y, int ok)
  71 {
  72         TEST (UNLT (x, y) || UNGT (x, y));
  73 }
  74
  75 static void iunlt (float x, float y, int ok)
  76 {
  77         TEST (UNLT (x, y));
  78         TEST (UNORD (x, y) || (x < y));
  79 }
  80
  81 static void ilt (float x, float y, int ok)
  82 {
  83         TEST (ORD (x, y) && UNLT (x, y)); /* Not optimized */
  84         TEST ((x <= y) && (x != y));
  85         TEST ((x <= y) && (y != x));
  86         TEST ((x != y) && (x <= y)); /* Not optimized */
  87         TEST ((y != x) && (x <= y)); /* Not optimized */
  88 }
  89
  90 static void iunle (float x, float y, int ok)
  91 {
  92         TEST (UNLE (x, y));
  93         TEST (UNORD (x, y) || (x <= y));
  94 }
  95
  96 static void ile (float x, float y, int ok)
  97 {
  98         TEST (ORD (x, y) && UNLE (x, y)); /* Not optimized */
  99         TEST ((x < y) || (x == y));
 100         TEST ((y > x) || (x == y));
 101         TEST ((x == y) || (x < y)); /* Not optimized */
 102         TEST ((y == x) || (x < y)); /* Not optimized */
 103 }
 104
 105 static void iungt (float x, float y, int ok)
 106 {
 107         TEST (UNGT (x, y));
 108         TEST (UNORD (x, y) || (x > y));
 109 }
 110
 111 static void igt (float x, float y, int ok)
 112 {
 113         TEST (ORD (x, y) && UNGT (x, y)); /* Not optimized */
 114         TEST ((x >= y) && (x != y));
 115         TEST ((x >= y) && (y != x));
 116         TEST ((x != y) && (x >= y)); /* Not optimized */
 117         TEST ((y != x) && (x >= y)); /* Not optimized */
 118 }
 119
 120 static void iunge (float x, float y, int ok)
 121 {
 122         TEST (UNGE (x, y));
 123         TEST (UNORD (x, y) || (x >= y));
 124 }
 125
 126 static void ige (float x, float y, int ok)
 127 {
 128         TEST (ORD (x, y) && UNGE (x, y)); /* Not optimized */
 129         TEST ((x > y) || (x == y));
 130         TEST ((y < x) || (x == y));
 131         TEST ((x == y) || (x > y)); /* Not optimized */
 132         TEST ((y == x) || (x > y)); /* Not optimized */
 133 }
 134
 135 int fpu_post_test_math6 (void)
 136 {
 137         pinf = __builtin_inf ();
 138         ninf = -__builtin_inf ();
 139         NaN = __builtin_nan ("");
 140
 141         iuneq (ninf, pinf, 0);
 142         iuneq (NaN, NaN, 1);
 143         iuneq (pinf, ninf, 0);
 144         iuneq (1, 4, 0);
 145         iuneq (3, 3, 1);
 146         iuneq (5, 2, 0);
 147
 148         ieq (1, 4, 0);
 149         ieq (3, 3, 1);
 150         ieq (5, 2, 0);
 151
 152         iltgt (ninf, pinf, 1);
 153         iltgt (NaN, NaN, 0);
 154         iltgt (pinf, ninf, 1);
 155         iltgt (1, 4, 1);
 156         iltgt (3, 3, 0);
 157         iltgt (5, 2, 1);
 158
 159         ine (1, 4, 1);
 160         ine (3, 3, 0);
 161         ine (5, 2, 1);
 162
 163         iunlt (NaN, ninf, 1);
 164         iunlt (pinf, NaN, 1);
 165         iunlt (pinf, ninf, 0);
 166         iunlt (pinf, pinf, 0);
 167         iunlt (ninf, ninf, 0);
 168         iunlt (1, 4, 1);
 169         iunlt (3, 3, 0);
 170         iunlt (5, 2, 0);
 171
 172         ilt (1, 4, 1);
 173         ilt (3, 3, 0);
 174         ilt (5, 2, 0);
 175
 176         iunle (NaN, ninf, 1);
 177         iunle (pinf, NaN, 1);
 178         iunle (pinf, ninf, 0);
 179         iunle (pinf, pinf, 1);
 180         iunle (ninf, ninf, 1);
 181         iunle (1, 4, 1);
 182         iunle (3, 3, 1);
 183         iunle (5, 2, 0);
 184
 185         ile (1, 4, 1);
 186         ile (3, 3, 1);
 187         ile (5, 2, 0);
 188
 189         iungt (NaN, ninf, 1);
 190         iungt (pinf, NaN, 1);
 191         iungt (pinf, ninf, 1);
 192         iungt (pinf, pinf, 0);
 193         iungt (ninf, ninf, 0);
 194         iungt (1, 4, 0);
 195         iungt (3, 3, 0);
 196         iungt (5, 2, 1);
 197
 198         igt (1, 4, 0);
 199         igt (3, 3, 0);
 200         igt (5, 2, 1);
 201
 202         iunge (NaN, ninf, 1);
 203         iunge (pinf, NaN, 1);
 204         iunge (ninf, pinf, 0);
 205         iunge (pinf, pinf, 1);
 206         iunge (ninf, ninf, 1);
 207         iunge (1, 4, 0);
 208         iunge (3, 3, 1);
 209         iunge (5, 2, 1);
 210
 211         ige (1, 4, 0);
 212         ige (3, 3, 1);
 213         ige (5, 2, 1);
 214
 215         if (failed) {
 216                 post_log ("Error in FPU math6 test\n");
 217                 return -1;
 218         }
 219         return 0;
 220 }
 221
 222 #endif /* CONFIG_POST & CONFIG_SYS_POST_FPU */