compiler-rt/test/builtins/Unit/floatuntisf_test.c

   1 // RUN: %clang_builtins %s %librt -o %t && %run %t
   2 // REQUIRES: librt_has_floatuntisf
   3
   4 #include "int_lib.h"
   5 #include <float.h>
   6 #include <stdio.h>
   7
   8 #if defined(CRT_HAS_128BIT) && HAS_80_BIT_LONG_DOUBLE
   9
  10 // Returns: convert a to a float, rounding toward even.
  11
  12 // Assumption: float is a IEEE 32 bit floating point type
  13 //             tu_int is a 128 bit integral type
  14
  15 // seee eeee emmm mmmm mmmm mmmm mmmm mmmm
  16
  17 COMPILER_RT_ABI float __floatuntisf(tu_int a);
  18
  19 int test__floatuntisf(tu_int a, float expected)
  20 {
  21     float x = __floatuntisf(a);
  22     if (x != expected)
  23     {
  24         utwords at;
  25         at.all = a;
  26         printf("error in __floatuntisf(0x%.16llX%.16llX) = %a, expected %a\n",
  27                at.s.high, at.s.low, x, expected);
  28     }
  29     return x != expected;
  30 }
  31
  32 COMPILE_TIME_ASSERT(sizeof(tu_int) == 2*sizeof(du_int));
  33 COMPILE_TIME_ASSERT(sizeof(tu_int)*CHAR_BIT == 128);
  34 COMPILE_TIME_ASSERT(sizeof(float)*CHAR_BIT == 32);
  35
  36 #endif
  37
  38 int main()
  39 {
  40 #if defined(CRT_HAS_128BIT) && HAS_80_BIT_LONG_DOUBLE
  41     if (test__floatuntisf(0, 0.0F))
  42         return 1;
  43
  44     if (test__floatuntisf(1, 1.0F))
  45         return 1;
  46     if (test__floatuntisf(2, 2.0F))
  47         return 1;
  48     if (test__floatuntisf(20, 20.0F))
  49         return 1;
  50
  51     if (test__floatuntisf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62F))
  52         return 1;
  53     if (test__floatuntisf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62F))
  54         return 1;
  55
  56     if (test__floatuntisf(make_ti(0x8000008000000000LL, 0), 0x1.000001p+127F))
  57         return 1;
  58     if (test__floatuntisf(make_ti(0x8000000000000800LL, 0), 0x1.0p+127F))
  59         return 1;
  60     if (test__floatuntisf(make_ti(0x8000010000000000LL, 0), 0x1.000002p+127F))
  61         return 1;
  62
  63     if (test__floatuntisf(make_ti(0x8000000000000000LL, 0), 0x1.000000p+127F))
  64         return 1;
  65
  66     if (test__floatuntisf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50F))
  67         return 1;
  68
  69     if (test__floatuntisf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50F))
  70         return 1;
  71     if (test__floatuntisf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50F))
  72         return 1;
  73
  74     if (test__floatuntisf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50F))
  75         return 1;
  76
  77     if (test__floatuntisf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50F))
  78         return 1;
  79     if (test__floatuntisf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50F))
  80         return 1;
  81     if (test__floatuntisf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50F))
  82         return 1;
  83
  84     if (test__floatuntisf(0xFFFFFFFFFFFFFFFELL, 0x1p+64F))
  85         return 1;
  86     if (test__floatuntisf(0xFFFFFFFFFFFFFFFFLL, 0x1p+64F))
  87         return 1;
  88
  89     if (test__floatuntisf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50F))
  90         return 1;
  91
  92     if (test__floatuntisf(0x0007FB72EA000000LL, 0x1.FEDCBAp+50F))
  93         return 1;
  94     if (test__floatuntisf(0x0007FB72EB000000LL, 0x1.FEDCBAp+50F))
  95         return 1;
  96     if (test__floatuntisf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAp+50F))
  97         return 1;
  98     if (test__floatuntisf(0x0007FB72EC000000LL, 0x1.FEDCBCp+50F))
  99         return 1;
 100     if (test__floatuntisf(0x0007FB72E8000001LL, 0x1.FEDCBAp+50F))
 101         return 1;
 102
 103     if (test__floatuntisf(0x0007FB72E6000000LL, 0x1.FEDCBAp+50F))
 104         return 1;
 105     if (test__floatuntisf(0x0007FB72E7000000LL, 0x1.FEDCBAp+50F))
 106         return 1;
 107     if (test__floatuntisf(0x0007FB72E7FFFFFFLL, 0x1.FEDCBAp+50F))
 108         return 1;
 109     if (test__floatuntisf(0x0007FB72E4000001LL, 0x1.FEDCBAp+50F))
 110         return 1;
 111     if (test__floatuntisf(0x0007FB72E4000000LL, 0x1.FEDCB8p+50F))
 112         return 1;
 113
 114     if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCB90000000000001LL),
 115                           0x1.FEDCBAp+76F))
 116         return 1;
 117     if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBA0000000000000LL),
 118                           0x1.FEDCBAp+76F))
 119         return 1;
 120     if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBAFFFFFFFFFFFFFLL),
 121                           0x1.FEDCBAp+76F))
 122         return 1;
 123     if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBB0000000000000LL),
 124                           0x1.FEDCBCp+76F))
 125         return 1;
 126     if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBB0000000000001LL),
 127                           0x1.FEDCBCp+76F))
 128         return 1;
 129     if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBBFFFFFFFFFFFFFLL),
 130                           0x1.FEDCBCp+76F))
 131         return 1;
 132     if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBC0000000000000LL),
 133                           0x1.FEDCBCp+76F))
 134         return 1;
 135     if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBC0000000000001LL),
 136                           0x1.FEDCBCp+76F))
 137         return 1;
 138     if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBD0000000000000LL),
 139                           0x1.FEDCBCp+76F))
 140         return 1;
 141     if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBD0000000000001LL),
 142                           0x1.FEDCBEp+76F))
 143         return 1;
 144     if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBDFFFFFFFFFFFFFLL),
 145                           0x1.FEDCBEp+76F))
 146         return 1;
 147     if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBE0000000000000LL),
 148                           0x1.FEDCBEp+76F))
 149         return 1;
 150
 151 #else
 152     printf("skipped\n");
 153 #endif
 154    return 0;
 155 }