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

   1 // RUN: %clang_builtins %s %librt -o %t && %run %t
   2 // REQUIRES: librt_has_floatundixf
   3 //===-- floatundixf_test.c - Test __floatundixf ---------------------------===//
   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 __floatundixf for the compiler_rt library.
  12 //
  13 //===----------------------------------------------------------------------===//
  14
  15 #include "int_lib.h"
  16 #include <stdio.h>
  17
  18
  19 #if HAS_80_BIT_LONG_DOUBLE
  20 // Returns: convert a to a long double, rounding toward even.
  21
  22 // Assumption: long double is a IEEE 80 bit floating point type padded to 128 bits
  23 //             du_int is a 64 bit integral type
  24
  25 // gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
  26 // 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
  27
  28 COMPILER_RT_ABI long double __floatundixf(du_int a);
  29
  30 int test__floatundixf(du_int a, long double expected)
  31 {
  32     long double x = __floatundixf(a);
  33     if (x != expected)
  34         printf("error in __floatundixf(%llX) = %LA, expected %LA\n",
  35                a, x, expected);
  36     return x != expected;
  37 }
  38
  39 char assumption_1[sizeof(du_int) == 2*sizeof(si_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 #endif
  43
  44 int main()
  45 {
  46 #if HAS_80_BIT_LONG_DOUBLE
  47     if (test__floatundixf(0, 0.0))
  48         return 1;
  49
  50     if (test__floatundixf(1, 1.0))
  51         return 1;
  52     if (test__floatundixf(2, 2.0))
  53         return 1;
  54     if (test__floatundixf(20, 20.0))
  55         return 1;
  56
  57     if (test__floatundixf(0x7FFFFF8000000000ULL, 0x1.FFFFFEp+62))
  58         return 1;
  59     if (test__floatundixf(0x7FFFFFFFFFFFF800ULL, 0x1.FFFFFFFFFFFFEp+62))
  60         return 1;
  61     if (test__floatundixf(0x7FFFFF0000000000ULL, 0x1.FFFFFCp+62))
  62         return 1;
  63     if (test__floatundixf(0x7FFFFFFFFFFFF000ULL, 0x1.FFFFFFFFFFFFCp+62))
  64         return 1;
  65     if (test__floatundixf(0x7FFFFFFFFFFFFFFFULL, 0xF.FFFFFFFFFFFFFFEp+59L))
  66         return 1;
  67     if (test__floatundixf(0xFFFFFFFFFFFFFFFEULL, 0xF.FFFFFFFFFFFFFFEp+60L))
  68         return 1;
  69     if (test__floatundixf(0xFFFFFFFFFFFFFFFFULL, 0xF.FFFFFFFFFFFFFFFp+60L))
  70         return 1;
  71
  72     if (test__floatundixf(0x8000008000000000ULL, 0x8.000008p+60))
  73         return 1;
  74     if (test__floatundixf(0x8000000000000800ULL, 0x8.0000000000008p+60))
  75         return 1;
  76     if (test__floatundixf(0x8000010000000000ULL, 0x8.00001p+60))
  77         return 1;
  78     if (test__floatundixf(0x8000000000001000ULL, 0x8.000000000001p+60))
  79         return 1;
  80
  81     if (test__floatundixf(0x8000000000000000ULL, 0x8p+60))
  82         return 1;
  83     if (test__floatundixf(0x8000000000000001ULL, 0x8.000000000000001p+60L))
  84         return 1;
  85
  86     if (test__floatundixf(0x0007FB72E8000000ULL, 0x1.FEDCBAp+50))
  87         return 1;
  88
  89     if (test__floatundixf(0x0007FB72EA000000ULL, 0x1.FEDCBA8p+50))
  90         return 1;
  91     if (test__floatundixf(0x0007FB72EB000000ULL, 0x1.FEDCBACp+50))
  92         return 1;
  93     if (test__floatundixf(0x0007FB72EBFFFFFFULL, 0x1.FEDCBAFFFFFFCp+50))
  94         return 1;
  95     if (test__floatundixf(0x0007FB72EC000000ULL, 0x1.FEDCBBp+50))
  96         return 1;
  97     if (test__floatundixf(0x0007FB72E8000001ULL, 0x1.FEDCBA0000004p+50))
  98         return 1;
  99
 100     if (test__floatundixf(0x0007FB72E6000000ULL, 0x1.FEDCB98p+50))
 101         return 1;
 102     if (test__floatundixf(0x0007FB72E7000000ULL, 0x1.FEDCB9Cp+50))
 103         return 1;
 104     if (test__floatundixf(0x0007FB72E7FFFFFFULL, 0x1.FEDCB9FFFFFFCp+50))
 105         return 1;
 106     if (test__floatundixf(0x0007FB72E4000001ULL, 0x1.FEDCB90000004p+50))
 107         return 1;
 108     if (test__floatundixf(0x0007FB72E4000000ULL, 0x1.FEDCB9p+50))
 109         return 1;
 110
 111     if (test__floatundixf(0x023479FD0E092DC0ULL, 0x1.1A3CFE870496Ep+57))
 112         return 1;
 113     if (test__floatundixf(0x023479FD0E092DA1ULL, 0x8.D1E7F43824B684p+54L))
 114         return 1;
 115     if (test__floatundixf(0x023479FD0E092DB0ULL, 0x8.D1E7f43824B6Cp+54L))
 116         return 1;
 117     if (test__floatundixf(0x023479FD0E092DB8ULL, 0x8.D1E7F43824B6Ep+54L))
 118         return 1;
 119     if (test__floatundixf(0x023479FD0E092DB6ULL, 0x8.D1E7F43824B6D8p+54L))
 120         return 1;
 121     if (test__floatundixf(0x023479FD0E092DBFULL, 0x8.D1E7F43824B6FCp+54L))
 122         return 1;
 123     if (test__floatundixf(0x023479FD0E092DC1ULL, 0x8.D1E7F43824B704p+54L))
 124         return 1;
 125     if (test__floatundixf(0x023479FD0E092DC7ULL, 0x8.D1E7F43824B71Cp+54L))
 126         return 1;
 127     if (test__floatundixf(0x023479FD0E092DC8ULL, 0x8.D1E7F43824B72p+54L))
 128         return 1;
 129     if (test__floatundixf(0x023479FD0E092DCFULL, 0x8.D1E7F43824B73Cp+54L))
 130         return 1;
 131     if (test__floatundixf(0x023479FD0E092DD0ULL, 0x8.D1E7F43824B74p+54L))
 132         return 1;
 133     if (test__floatundixf(0x023479FD0E092DD1ULL, 0x8.D1E7F43824B744p+54L))
 134         return 1;
 135     if (test__floatundixf(0x023479FD0E092DD8ULL, 0x8.D1E7F43824B76p+54L))
 136         return 1;
 137     if (test__floatundixf(0x023479FD0E092DDFULL, 0x8.D1E7F43824B77Cp+54L))
 138         return 1;
 139     if (test__floatundixf(0x023479FD0E092DE0ULL, 0x1.1A3CFE870496Fp+57))
 140         return 1;
 141
 142 #else
 143     printf("skipped\n");
 144 #endif
 145    return 0;
 146 }