src/compiler-rt/test/builtins/Unit/floatundidf_test.c

   1 //===-- floatundidf_test.c - Test __floatundidf ---------------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is dual licensed under the MIT and the University of Illinois Open
   6 // Source Licenses. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file tests __floatundidf for the compiler_rt library.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "int_lib.h"
  15 #include <float.h>
  16 #include <stdio.h>
  17
  18 // Returns: convert a to a double, rounding toward even.
  19
  20 // Assumption: double is a IEEE 64 bit floating point type
  21 //             du_int is a 64 bit integral type
  22
  23 // seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
  24
  25 COMPILER_RT_ABI double __floatundidf(du_int a);
  26
  27 int test__floatundidf(di_int a, double expected)
  28 {
  29     double x = __floatundidf(a);
  30     if (x != expected)
  31         printf("error in __floatundidf(%llX) = %a, expected %a\n",
  32                a, x, expected);
  33     return x != expected;
  34 }
  35
  36 char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};
  37 char assumption_2[sizeof(di_int)*CHAR_BIT == 64] = {0};
  38 char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0};
  39
  40 int main()
  41 {
  42     if (test__floatundidf(0, 0.0))
  43         return 1;
  44
  45     if (test__floatundidf(1, 1.0))
  46         return 1;
  47     if (test__floatundidf(2, 2.0))
  48         return 1;
  49     if (test__floatundidf(20, 20.0))
  50         return 1;
  51
  52     if (test__floatundidf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62))
  53         return 1;
  54     if (test__floatundidf(0x7FFFFFFFFFFFF800LL, 0x1.FFFFFFFFFFFFEp+62))
  55         return 1;
  56     if (test__floatundidf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62))
  57         return 1;
  58     if (test__floatundidf(0x7FFFFFFFFFFFF000LL, 0x1.FFFFFFFFFFFFCp+62))
  59         return 1;
  60
  61     if (test__floatundidf(0x8000008000000000LL, 0x1.000001p+63))
  62         return 1;
  63     if (test__floatundidf(0x8000000000000800LL, 0x1.0000000000001p+63))
  64         return 1;
  65     if (test__floatundidf(0x8000010000000000LL, 0x1.000002p+63))
  66         return 1;
  67     if (test__floatundidf(0x8000000000001000LL, 0x1.0000000000002p+63))
  68         return 1;
  69
  70     if (test__floatundidf(0x8000000000000000LL, 0x1p+63))
  71         return 1;
  72     if (test__floatundidf(0x8000000000000001LL, 0x1p+63))
  73         return 1;
  74
  75     if (test__floatundidf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50))
  76         return 1;
  77
  78     if (test__floatundidf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50))
  79         return 1;
  80     if (test__floatundidf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50))
  81         return 1;
  82     if (test__floatundidf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAFFFFFFCp+50))
  83         return 1;
  84     if (test__floatundidf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50))
  85         return 1;
  86     if (test__floatundidf(0x0007FB72E8000001LL, 0x1.FEDCBA0000004p+50))
  87         return 1;
  88
  89     if (test__floatundidf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50))
  90         return 1;
  91     if (test__floatundidf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50))
  92         return 1;
  93     if (test__floatundidf(0x0007FB72E7FFFFFFLL, 0x1.FEDCB9FFFFFFCp+50))
  94         return 1;
  95     if (test__floatundidf(0x0007FB72E4000001LL, 0x1.FEDCB90000004p+50))
  96         return 1;
  97     if (test__floatundidf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50))
  98         return 1;
  99
 100     if (test__floatundidf(0x023479FD0E092DC0LL, 0x1.1A3CFE870496Ep+57))
 101         return 1;
 102     if (test__floatundidf(0x023479FD0E092DA1LL, 0x1.1A3CFE870496Dp+57))
 103         return 1;
 104     if (test__floatundidf(0x023479FD0E092DB0LL, 0x1.1A3CFE870496Ep+57))
 105         return 1;
 106     if (test__floatundidf(0x023479FD0E092DB8LL, 0x1.1A3CFE870496Ep+57))
 107         return 1;
 108     if (test__floatundidf(0x023479FD0E092DB6LL, 0x1.1A3CFE870496Ep+57))
 109         return 1;
 110     if (test__floatundidf(0x023479FD0E092DBFLL, 0x1.1A3CFE870496Ep+57))
 111         return 1;
 112     if (test__floatundidf(0x023479FD0E092DC1LL, 0x1.1A3CFE870496Ep+57))
 113         return 1;
 114     if (test__floatundidf(0x023479FD0E092DC7LL, 0x1.1A3CFE870496Ep+57))
 115         return 1;
 116     if (test__floatundidf(0x023479FD0E092DC8LL, 0x1.1A3CFE870496Ep+57))
 117         return 1;
 118     if (test__floatundidf(0x023479FD0E092DCFLL, 0x1.1A3CFE870496Ep+57))
 119         return 1;
 120     if (test__floatundidf(0x023479FD0E092DD0LL, 0x1.1A3CFE870496Ep+57))
 121         return 1;
 122     if (test__floatundidf(0x023479FD0E092DD1LL, 0x1.1A3CFE870496Fp+57))
 123         return 1;
 124     if (test__floatundidf(0x023479FD0E092DD8LL, 0x1.1A3CFE870496Fp+57))
 125         return 1;
 126     if (test__floatundidf(0x023479FD0E092DDFLL, 0x1.1A3CFE870496Fp+57))
 127         return 1;
 128     if (test__floatundidf(0x023479FD0E092DE0LL, 0x1.1A3CFE870496Fp+57))
 129         return 1;
 130
 131    return 0;
 132 }