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

   1 //===-- fixunssfti_test.c - Test __fixunssfti -----------------------------===//
   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 __fixunssfti for the compiler_rt library.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #if __x86_64
  15
  16 #include "int_lib.h"
  17 #include <stdio.h>
  18
  19 // Returns: convert a to a unsigned long long, rounding toward zero.
  20 //          Negative values all become zero.
  21
  22 // Assumption: float is a IEEE 32 bit floating point type
  23 //             tu_int is a 64 bit integral type
  24 //             value in float is representable in tu_int or is negative
  25 //                 (no range checking performed)
  26
  27 // seee eeee emmm mmmm mmmm mmmm mmmm mmmm
  28
  29 tu_int __fixunssfti(float a);
  30
  31 int test__fixunssfti(float a, tu_int expected)
  32 {
  33     tu_int x = __fixunssfti(a);
  34     if (x != expected)
  35     {
  36         utwords xt;
  37         xt.all = x;
  38         utwords expectedt;
  39         expectedt.all = expected;
  40         printf("error in __fixunssfti(%A) = 0x%.16llX%.16llX, expected 0x%.16llX%.16llX\n",
  41                a, xt.s.high, xt.s.low, expectedt.s.high, expectedt.s.low);
  42     }
  43     return x != expected;
  44 }
  45
  46 char assumption_1[sizeof(tu_int) == 2*sizeof(di_int)] = {0};
  47 char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};
  48 char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0};
  49
  50 #endif
  51
  52 int main()
  53 {
  54 #if __x86_64
  55     if (test__fixunssfti(0.0F, 0))
  56         return 1;
  57
  58     if (test__fixunssfti(0.5F, 0))
  59         return 1;
  60     if (test__fixunssfti(0.99F, 0))
  61         return 1;
  62     if (test__fixunssfti(1.0F, 1))
  63         return 1;
  64     if (test__fixunssfti(1.5F, 1))
  65         return 1;
  66     if (test__fixunssfti(1.99F, 1))
  67         return 1;
  68     if (test__fixunssfti(2.0F, 2))
  69         return 1;
  70     if (test__fixunssfti(2.01F, 2))
  71         return 1;
  72     if (test__fixunssfti(-0.5F, 0))
  73         return 1;
  74     if (test__fixunssfti(-0.99F, 0))
  75         return 1;
  76 #if !TARGET_LIBGCC
  77     if (test__fixunssfti(-1.0F, 0))  // libgcc ignores "returns 0 for negative input" spec
  78         return 1;
  79     if (test__fixunssfti(-1.5F, 0))
  80         return 1;
  81     if (test__fixunssfti(-1.99F, 0))
  82         return 1;
  83     if (test__fixunssfti(-2.0F, 0))
  84         return 1;
  85     if (test__fixunssfti(-2.01F, 0))
  86         return 1;
  87 #endif
  88
  89     if (test__fixunssfti(0x1.FFFFFEp+63F, 0xFFFFFF0000000000LL))
  90         return 1;
  91     if (test__fixunssfti(0x1.000000p+63F, 0x8000000000000000LL))
  92         return 1;
  93     if (test__fixunssfti(0x1.FFFFFEp+62F, 0x7FFFFF8000000000LL))
  94         return 1;
  95     if (test__fixunssfti(0x1.FFFFFCp+62F, 0x7FFFFF0000000000LL))
  96         return 1;
  97
  98     if (test__fixunssfti(0x1.FFFFFEp+127F, make_ti(0xFFFFFF0000000000LL, 0)))
  99         return 1;
 100     if (test__fixunssfti(0x1.000000p+127F, make_ti(0x8000000000000000LL, 0)))
 101         return 1;
 102     if (test__fixunssfti(0x1.FFFFFEp+126F, make_ti(0x7FFFFF8000000000LL, 0)))
 103         return 1;
 104     if (test__fixunssfti(0x1.FFFFFCp+126F, make_ti(0x7FFFFF0000000000LL, 0)))
 105         return 1;
 106
 107 #if !TARGET_LIBGCC
 108     if (test__fixunssfti(-0x1.FFFFFEp+62F, 0x0000000000000000LL))
 109         return 1;
 110     if (test__fixunssfti(-0x1.FFFFFCp+62F, 0x0000000000000000LL))
 111         return 1;
 112     if (test__fixunssfti(-0x1.FFFFFEp+126F, 0x0000000000000000LL))
 113         return 1;
 114     if (test__fixunssfti(-0x1.FFFFFCp+126F, 0x0000000000000000LL))
 115         return 1;
 116 #endif
 117
 118 #endif
 119    return 0;
 120 }