src/compiler-rt/test/builtins/Unit/absvti2_test.c

   1 //===-- absvti2_test.c - Test __absvti2 -----------------------------------===//
   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 __absvti2 for the compiler_rt library.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "int_lib.h"
  15 #include <stdio.h>
  16 #include <stdlib.h>
  17
  18 #ifdef CRT_HAS_128BIT
  19
  20 // Returns: absolute value
  21
  22 // Effects: aborts if abs(x) < 0
  23
  24 COMPILER_RT_ABI ti_int __absvti2(ti_int a);
  25
  26 int test__absvti2(ti_int a)
  27 {
  28     ti_int x = __absvti2(a);
  29     ti_int expected = a;
  30     if (expected < 0)
  31         expected = -expected;
  32     if (x != expected || expected < 0)
  33     {
  34         twords at;
  35         at.all = a;
  36         twords xt;
  37         xt.all = x;
  38         twords expectedt;
  39         expectedt.all = expected;
  40         printf("error in __absvti2(0x%llX%.16llX) = "
  41                "0x%llX%.16llX, expected positive 0x%llX%.16llX\n",
  42                at.s.high, at.s.low, xt.s.high, xt.s.low,
  43                expectedt.s.high, expectedt.s.low);
  44     }
  45     return x != expected;
  46 }
  47
  48 #endif
  49
  50 int main()
  51 {
  52 #ifdef CRT_HAS_128BIT
  53
  54 //     if (test__absvti2(make_ti(0x8000000000000000LL, 0)))  // should abort
  55 //         return 1;
  56     if (test__absvti2(0x0000000000000000LL))
  57         return 1;
  58     if (test__absvti2(0x0000000000000001LL))
  59         return 1;
  60     if (test__absvti2(0x0000000000000002LL))
  61         return 1;
  62     if (test__absvti2(make_ti(0x7FFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFFFELL)))
  63         return 1;
  64     if (test__absvti2(make_ti(0x7FFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFFFFLL)))
  65         return 1;
  66     if (test__absvti2(make_ti(0x8000000000000000LL, 0x0000000000000001LL)))
  67         return 1;
  68     if (test__absvti2(make_ti(0x8000000000000000LL, 0x0000000000000002LL)))
  69         return 1;
  70     if (test__absvti2(make_ti(0xFFFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFFFELL)))
  71         return 1;
  72     if (test__absvti2(make_ti(0xFFFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFFFFLL)))
  73         return 1;
  74
  75     int i;
  76     for (i = 0; i < 10000; ++i)
  77         if (test__absvti2(make_ti(((ti_int)rand() << 32) | rand(),
  78                                   ((ti_int)rand() << 32) | rand())))
  79             return 1;
  80 #else
  81     printf("skipped\n");
  82 #endif
  83     return 0;
  84 }