sys/external/bsd/compiler_rt/dist/test/Unit/floattisf_test.c

   1 //===-- floattisf_test.c - Test __floattisf -------------------------------===//
   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 __floattisf for the compiler_rt library.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #if __x86_64
  15
  16 #include "int_lib.h"
  17 #include <float.h>
  18 #include <stdio.h>
  19
  20 // Returns: convert a to a float, rounding toward even.
  21
  22 // Assumption: float is a IEEE 32 bit floating point type
  23 //             ti_int is a 64 bit integral type
  24
  25 // seee eeee emmm mmmm mmmm mmmm mmmm mmmm
  26
  27 float __floattisf(ti_int a);
  28
  29 int test__floattisf(ti_int a, float expected)
  30 {
  31     float x = __floattisf(a);
  32     if (x != expected)
  33     {
  34         twords at;
  35         at.all = a;
  36         printf("error in __floattisf(0x%.16llX%.16llX) = %a, expected %a\n",
  37                at.s.high, at.s.low, x, expected);
  38     }
  39     return x != expected;
  40 }
  41
  42 char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0};
  43 char assumption_2[sizeof(ti_int)*CHAR_BIT == 128] = {0};
  44 char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0};
  45
  46 #endif
  47
  48 int main()
  49 {
  50 #if __x86_64
  51     if (test__floattisf(0, 0.0F))
  52         return 1;
  53
  54     if (test__floattisf(1, 1.0F))
  55         return 1;
  56     if (test__floattisf(2, 2.0F))
  57         return 1;
  58     if (test__floattisf(-1, -1.0F))
  59         return 1;
  60     if (test__floattisf(-2, -2.0F))
  61         return 1;
  62
  63     if (test__floattisf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62F))
  64         return 1;
  65     if (test__floattisf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62F))
  66         return 1;
  67
  68     if (test__floattisf(make_ti(0xFFFFFFFFFFFFFFFFLL, 0x8000008000000000LL),
  69                         -0x1.FFFFFEp+62F))
  70         return 1;
  71     if (test__floattisf(make_ti(0xFFFFFFFFFFFFFFFFLL, 0x8000010000000000LL),
  72                         -0x1.FFFFFCp+62F))
  73         return 1;
  74
  75     if (test__floattisf(make_ti(0xFFFFFFFFFFFFFFFFLL, 0x8000000000000000LL),
  76                         -0x1.000000p+63F))
  77         return 1;
  78     if (test__floattisf(make_ti(0xFFFFFFFFFFFFFFFFLL, 0x8000000000000001LL),
  79                         -0x1.000000p+63F))
  80         return 1;
  81
  82     if (test__floattisf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50F))
  83         return 1;
  84
  85     if (test__floattisf(0x0007FB72EA000000LL, 0x1.FEDCBAp+50F))
  86         return 1;
  87     if (test__floattisf(0x0007FB72EB000000LL, 0x1.FEDCBAp+50F))
  88         return 1;
  89     if (test__floattisf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAp+50F))
  90         return 1;
  91     if (test__floattisf(0x0007FB72EC000000LL, 0x1.FEDCBCp+50F))
  92         return 1;
  93     if (test__floattisf(0x0007FB72E8000001LL, 0x1.FEDCBAp+50F))
  94         return 1;
  95
  96     if (test__floattisf(0x0007FB72E6000000LL, 0x1.FEDCBAp+50F))
  97         return 1;
  98     if (test__floattisf(0x0007FB72E7000000LL, 0x1.FEDCBAp+50F))
  99         return 1;
 100     if (test__floattisf(0x0007FB72E7FFFFFFLL, 0x1.FEDCBAp+50F))
 101         return 1;
 102     if (test__floattisf(0x0007FB72E4000001LL, 0x1.FEDCBAp+50F))
 103         return 1;
 104     if (test__floattisf(0x0007FB72E4000000LL, 0x1.FEDCB8p+50F))
 105         return 1;
 106
 107     if (test__floattisf(make_ti(0x0007FB72E8000000LL, 0), 0x1.FEDCBAp+114F))
 108         return 1;
 109
 110     if (test__floattisf(make_ti(0x0007FB72EA000000LL, 0), 0x1.FEDCBAp+114F))
 111         return 1;
 112     if (test__floattisf(make_ti(0x0007FB72EB000000LL, 0), 0x1.FEDCBAp+114F))
 113         return 1;
 114     if (test__floattisf(make_ti(0x0007FB72EBFFFFFFLL, 0), 0x1.FEDCBAp+114F))
 115         return 1;
 116     if (test__floattisf(make_ti(0x0007FB72EC000000LL, 0), 0x1.FEDCBCp+114F))
 117         return 1;
 118     if (test__floattisf(make_ti(0x0007FB72E8000001LL, 0), 0x1.FEDCBAp+114F))
 119         return 1;
 120
 121     if (test__floattisf(make_ti(0x0007FB72E6000000LL, 0), 0x1.FEDCBAp+114F))
 122         return 1;
 123     if (test__floattisf(make_ti(0x0007FB72E7000000LL, 0), 0x1.FEDCBAp+114F))
 124         return 1;
 125     if (test__floattisf(make_ti(0x0007FB72E7FFFFFFLL, 0), 0x1.FEDCBAp+114F))
 126         return 1;
 127     if (test__floattisf(make_ti(0x0007FB72E4000001LL, 0), 0x1.FEDCBAp+114F))
 128         return 1;
 129     if (test__floattisf(make_ti(0x0007FB72E4000000LL, 0), 0x1.FEDCB8p+114F))
 130         return 1;
 131
 132 #else
 133     printf("skipped\n");
 134 #endif
 135    return 0;
 136 }