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      1 /*  Copyright (C) 2007 IBM
      2 
      3     Author: Pete Eberlein  eberlein (at) us.ibm.com
      4 
      5     This program is free software; you can redistribute it and/or
      6     modify it under the terms of the GNU General Public License as
      7     published by the Free Software Foundation; either version 2 of the
      8     License, or (at your option) any later version.
      9 
     10     This program is distributed in the hope that it will be useful, but
     11     WITHOUT ANY WARRANTY; without even the implied warranty of
     12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     13     General Public License for more details.
     14 
     15     You should have received a copy of the GNU General Public License
     16     along with this program; if not, write to the Free Software
     17     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
     18     02111-1307, USA.
     19 
     20     The GNU General Public License is contained in the file COPYING.
     21 */
     22 
     23 
     24 
     25 #include <stdio.h>
     26 #include <stdlib.h>
     27 #include <strings.h>
     28 
     29 #define POS_NORMAL   0x4000
     30 #define NEG_NORMAL   0x8000
     31 #define POS_INF      0x5000
     32 #define NEG_INF      0x9000
     33 #define POS_ZERO     0x2000
     34 #define NEG_ZERO     0x12000
     35 #define POS_DENORMAL 0x14000
     36 #define NEG_DENORMAL 0x18000
     37 #define NAN          0x11000
     38 #define FPRF_MASK    0x1F000
     39 
     40 
     41 int main(int argc, char *argv[])
     42 {
     43 
     44    double inf, neg0, nan;
     45    union {
     46       double d;
     47       struct {
     48          unsigned int dummy, dummy2:15, fprf:17;
     49       };
     50    } fpscr;
     51 
     52    inf = strtod("inf", NULL);
     53    neg0 = strtod("-0", NULL);
     54    nan = strtod("nan", NULL);
     55 
     56 
     57    /* This set is disabled until fprf is implemented. */
     58    if (0) {
     59       double set[] = { inf, 1.5, 0, neg0, -1.5, -inf, nan };
     60       int i, j, fprf;
     61       for (i = 0; i < 7; ++i) {
     62          for (j = 0; j < 7; ++j) {
     63           asm("fcmpu 1, %1, %2\n\t" "mffs %0\n":"=f"(fpscr.d)
     64           :    "f"(set[i]), "f"(set[j])
     65                 );
     66 
     67             if (i == 6 || j == 6) {
     68                fprf = 0x1000;   // Unordered
     69             } else if (i == j || (i == 2 && j == 3) || (i == 3 && j == 2)) {
     70                fprf = 0x2000;   // Equal
     71             } else if (i < j) {
     72                fprf = 0x4000;   // Greater Than
     73             } else if (i > j) {
     74                fprf = 0x8000;   // Less Than
     75             }
     76 
     77             printf("fcmpu\t%.1f\t%.1f\t%x\t%s\n", set[i], set[j],
     78                    fpscr.fprf, fpscr.fprf == fprf ? "PASS" : "FAIL");
     79          }
     80       }
     81    }
     82 
     83    {
     84       double set[] = { inf, 1.9, 1.1, 0, neg0, -1.1, -1.9, -inf, nan };
     85       double frin[] = { inf, 2.0, 1.0, 0, neg0, -1.0, -2.0, -inf, nan };
     86       double friz[] = { inf, 1.0, 1.0, 0, neg0, -1.0, -1.0, -inf, nan };
     87       double frip[] = { inf, 2.0, 2.0, 0, neg0, -1.0, -1.0, -inf, nan };
     88       double frim[] = { inf, 1.0, 1.0, 0, neg0, -2.0, -2.0, -inf, nan };
     89       double set2[] = { 0.9, 0.1, -0.1, -0.9, 1e-40, -1e-40 };
     90       double frin2[] = { 1.0, 0.0, -0.0, -1.0, 0.0, -0.0 };
     91       double friz2[] = { 0.0, 0.0, -0.0, -0.0, 0.0, -0.0 };
     92       double frip2[] = { 1.0, 1.0, -0.0, -0.0, 1.0, -0.0 };
     93       double frim2[] = { 0.0, 0.0, -1.0, -1.0, 0.0, -1.0 };
     94       double ret;
     95       int i;
     96 
     97 #define DO_TEST(op,in,out,rf)  for (i=0; i<sizeof(in)/sizeof(double); ++i) { \
     98     asm (#op" %0, %2\n\t" \
     99        "mffs %1\n" \
    100     : "=f" (ret), "=f" (fpscr.d) \
    101     : "f" (in[i]) \
    102     ); \
    103     printf(#op"\t%g\t%g\t%x\t%s\n", in[i], ret, fpscr.fprf, \
    104            (!bcmp(&ret, &out[i], sizeof(double))) /*&& (rf[i] == fpscr.fprf)*/ \
    105 	   ? "PASS" : "FAIL"); \
    106   }
    107       /* Note: fprf check above is disabled until fprf is implemented. */
    108 
    109 
    110       DO_TEST(frin, set, frin, fprf);
    111       DO_TEST(frin, set2, frin2, frin2rf);
    112       DO_TEST(friz, set, friz, fprf);
    113       DO_TEST(friz, set2, friz2, friz2rf);
    114       DO_TEST(frip, set, frip, fprf);
    115       DO_TEST(frip, set2, frip2, frip2rf);
    116       DO_TEST(frim, set, frim, fprf);
    117       DO_TEST(frim, set2, frim2, frim2rf);
    118    }
    119 
    120    /* This set is disabled until fprf is implemented. */
    121    if (0) {
    122       double set1[] = { inf, 0.9, 0.1, 0, neg0, -0.1, -0.9, -inf, nan };
    123       double frsp1[] =
    124           { inf, 0.9f, 0.1f, 0, neg0, -0.1f, -0.9f, -inf, nan };
    125       double set2[] =
    126           { 1.2e-38, 1.1e-38, 1e-40, 8e-44, 9e-44, 8e-46, 7e-46 };
    127       double frsp2[] =
    128           { 1.2e-38f, 1.1e-38f, 1e-40f, 8e-44f, 9e-44f, 8e-46f, 0.0 };
    129       double set3[] =
    130           { -1.2e-38, -1.1e-38, -1e-40, -8e-44, -9e-44, -8e-46, -7e-46 };
    131       double frsp3[] =
    132           { -1.2e-38f, -1.1e-38f, -1e-40f, -8e-44f, -9e-44f, -8e-46f,
    133 -0.0 };
    134       double ret;
    135       int i;
    136       DO_TEST(frsp, set1, frsp1, fprf1);
    137       DO_TEST(frsp, set2, frsp2, fprf2);
    138       DO_TEST(frsp, set3, frsp3, fprf3);
    139    }
    140 
    141 
    142    return 0;
    143 }
    144