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

   1 // RUN: %clang_builtins %s %librt -o %t && %run %t
   2 // REQUIRES: librt_has_fixunstfdi
   3 //===-- fixunstfdi_test.c - Test __fixunstfdi -----------------------------===//
   4 //
   5 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   6 // See https://llvm.org/LICENSE.txt for license information.
   7 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   8 //
   9 //===----------------------------------------------------------------------===//
  10 //
  11 // This file tests __fixunstfdi for the compiler_rt library.
  12 //
  13 //===----------------------------------------------------------------------===//
  14
  15 #include <stdio.h>
  16
  17 #if _ARCH_PPC || __aarch64__
  18
  19 #include "int_lib.h"
  20
  21 // Returns: convert a to a unsigned long long, rounding toward zero.
  22 //          Negative values all become zero.
  23
  24 // Assumption: long double is a 128 bit floating point type
  25 //             du_int is a 64 bit integral type
  26 //             value in long double is representable in du_int or is negative
  27 //                 (no range checking performed)
  28
  29 COMPILER_RT_ABI du_int __fixunstfdi(long double a);
  30
  31 int test__fixunstfdi(long double a, du_int expected)
  32 {
  33     du_int x = __fixunstfdi(a);
  34     if (x != expected)
  35         printf("error in __fixunstfdi(%LA) = %llX, expected %llX\n",
  36                a, x, expected);
  37     return x != expected;
  38 }
  39
  40 char assumption_1[sizeof(du_int) == 2*sizeof(su_int)] = {0};
  41 char assumption_2[sizeof(du_int)*CHAR_BIT == 64] = {0};
  42 char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
  43
  44 #endif
  45
  46 int main()
  47 {
  48 #if _ARCH_PPC || __aarch64__
  49     if (test__fixunstfdi(0.0, 0))
  50         return 1;
  51
  52     if (test__fixunstfdi(0.5, 0))
  53         return 1;
  54     if (test__fixunstfdi(0.99, 0))
  55         return 1;
  56     if (test__fixunstfdi(1.0, 1))
  57         return 1;
  58     if (test__fixunstfdi(1.5, 1))
  59         return 1;
  60     if (test__fixunstfdi(1.99, 1))
  61         return 1;
  62     if (test__fixunstfdi(2.0, 2))
  63         return 1;
  64     if (test__fixunstfdi(2.01, 2))
  65         return 1;
  66     if (test__fixunstfdi(-0.5, 0))
  67         return 1;
  68     if (test__fixunstfdi(-0.99, 0))
  69         return 1;
  70     if (test__fixunstfdi(-1.0, 0))
  71         return 1;
  72     if (test__fixunstfdi(-1.5, 0))
  73         return 1;
  74     if (test__fixunstfdi(-1.99, 0))
  75         return 1;
  76     if (test__fixunstfdi(-2.0, 0))
  77         return 1;
  78     if (test__fixunstfdi(-2.01, 0))
  79         return 1;
  80
  81     if (test__fixunstfdi(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))
  82         return 1;
  83     if (test__fixunstfdi(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))
  84         return 1;
  85
  86     if (test__fixunstfdi(-0x1.FFFFFEp+62, 0))
  87         return 1;
  88     if (test__fixunstfdi(-0x1.FFFFFCp+62, 0))
  89         return 1;
  90
  91     if (test__fixunstfdi(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL))
  92         return 1;
  93     if (test__fixunstfdi(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL))
  94         return 1;
  95
  96     if (test__fixunstfdi(-0x1.FFFFFFFFFFFFFp+62, 0))
  97         return 1;
  98     if (test__fixunstfdi(-0x1.FFFFFFFFFFFFEp+62, 0))
  99         return 1;
 100
 101     if (test__fixunstfdi(0x1.FFFFFFFFFFFFFFFEp+63L, 0xFFFFFFFFFFFFFFFFLL))
 102         return 1;
 103     if (test__fixunstfdi(0x1.0000000000000002p+63L, 0x8000000000000001LL))
 104         return 1;
 105     if (test__fixunstfdi(0x1.0000000000000000p+63L, 0x8000000000000000LL))
 106         return 1;
 107     if (test__fixunstfdi(0x1.FFFFFFFFFFFFFFFCp+62L, 0x7FFFFFFFFFFFFFFFLL))
 108         return 1;
 109     if (test__fixunstfdi(0x1.FFFFFFFFFFFFFFF8p+62L, 0x7FFFFFFFFFFFFFFELL))
 110         return 1;
 111     if (test__fixunstfdi(0x1.p+64L, 0xFFFFFFFFFFFFFFFFLL))
 112         return 1;
 113
 114     if (test__fixunstfdi(-0x1.0000000000000000p+63L, 0))
 115         return 1;
 116     if (test__fixunstfdi(-0x1.FFFFFFFFFFFFFFFCp+62L, 0))
 117         return 1;
 118     if (test__fixunstfdi(-0x1.FFFFFFFFFFFFFFF8p+62L, 0))
 119         return 1;
 120
 121 #else
 122     printf("skipped\n");
 123 #endif
 124    return 0;
 125 }