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

   1 //===-- fixunstfdi_test.c - Test __fixunstfdi -----------------------------===//
   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 __fixunstfdi for the compiler_rt library.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include <stdio.h>
  15
  16 #if _ARCH_PPC || __aarch64__
  17
  18 #include "int_lib.h"
  19
  20 // Returns: convert a to a unsigned long long, rounding toward zero.
  21 //          Negative values all become zero.
  22
  23 // Assumption: long double is a 128 bit floating point type
  24 //             du_int is a 64 bit integral type
  25 //             value in long double is representable in du_int or is negative
  26 //                 (no range checking performed)
  27
  28 COMPILER_RT_ABI du_int __fixunstfdi(long double a);
  29
  30 int test__fixunstfdi(long double a, du_int expected)
  31 {
  32     du_int x = __fixunstfdi(a);
  33     if (x != expected)
  34         printf("error in __fixunstfdi(%LA) = %llX, expected %llX\n",
  35                a, x, expected);
  36     return x != expected;
  37 }
  38
  39 char assumption_1[sizeof(du_int) == 2*sizeof(su_int)] = {0};
  40 char assumption_2[sizeof(du_int)*CHAR_BIT == 64] = {0};
  41 char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
  42
  43 #endif
  44
  45 int main()
  46 {
  47 #if _ARCH_PPC || __aarch64__
  48     if (test__fixunstfdi(0.0, 0))
  49         return 1;
  50
  51     if (test__fixunstfdi(0.5, 0))
  52         return 1;
  53     if (test__fixunstfdi(0.99, 0))
  54         return 1;
  55     if (test__fixunstfdi(1.0, 1))
  56         return 1;
  57     if (test__fixunstfdi(1.5, 1))
  58         return 1;
  59     if (test__fixunstfdi(1.99, 1))
  60         return 1;
  61     if (test__fixunstfdi(2.0, 2))
  62         return 1;
  63     if (test__fixunstfdi(2.01, 2))
  64         return 1;
  65     if (test__fixunstfdi(-0.5, 0))
  66         return 1;
  67     if (test__fixunstfdi(-0.99, 0))
  68         return 1;
  69     if (test__fixunstfdi(-1.0, 0))
  70         return 1;
  71     if (test__fixunstfdi(-1.5, 0))
  72         return 1;
  73     if (test__fixunstfdi(-1.99, 0))
  74         return 1;
  75     if (test__fixunstfdi(-2.0, 0))
  76         return 1;
  77     if (test__fixunstfdi(-2.01, 0))
  78         return 1;
  79
  80     if (test__fixunstfdi(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))
  81         return 1;
  82     if (test__fixunstfdi(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))
  83         return 1;
  84
  85     if (test__fixunstfdi(-0x1.FFFFFEp+62, 0))
  86         return 1;
  87     if (test__fixunstfdi(-0x1.FFFFFCp+62, 0))
  88         return 1;
  89
  90     if (test__fixunstfdi(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL))
  91         return 1;
  92     if (test__fixunstfdi(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL))
  93         return 1;
  94
  95     if (test__fixunstfdi(-0x1.FFFFFFFFFFFFFp+62, 0))
  96         return 1;
  97     if (test__fixunstfdi(-0x1.FFFFFFFFFFFFEp+62, 0))
  98         return 1;
  99
 100     if (test__fixunstfdi(0x1.FFFFFFFFFFFFFFFEp+63L, 0xFFFFFFFFFFFFFFFFLL))
 101         return 1;
 102     if (test__fixunstfdi(0x1.0000000000000002p+63L, 0x8000000000000001LL))
 103         return 1;
 104     if (test__fixunstfdi(0x1.0000000000000000p+63L, 0x8000000000000000LL))
 105         return 1;
 106     if (test__fixunstfdi(0x1.FFFFFFFFFFFFFFFCp+62L, 0x7FFFFFFFFFFFFFFFLL))
 107         return 1;
 108     if (test__fixunstfdi(0x1.FFFFFFFFFFFFFFF8p+62L, 0x7FFFFFFFFFFFFFFELL))
 109         return 1;
 110     if (test__fixunstfdi(0x1.p+64L, 0xFFFFFFFFFFFFFFFFLL))
 111         return 1;
 112
 113     if (test__fixunstfdi(-0x1.0000000000000000p+63L, 0))
 114         return 1;
 115     if (test__fixunstfdi(-0x1.FFFFFFFFFFFFFFFCp+62L, 0))
 116         return 1;
 117     if (test__fixunstfdi(-0x1.FFFFFFFFFFFFFFF8p+62L, 0))
 118         return 1;
 119
 120 #else
 121     printf("skipped\n");
 122 #endif
 123    return 0;
 124 }