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

   1 // RUN: %clang_builtins %s %librt -o %t && %run %t
   2 // REQUIRES: librt_has_absvti2
   3 // REQUIRES: int128
   4
   5 #include "int_lib.h"
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8
   9 #ifdef CRT_HAS_128BIT
  10
  11 // Returns: absolute value
  12
  13 // Effects: aborts if abs(x) < 0
  14
  15 COMPILER_RT_ABI ti_int __absvti2(ti_int a);
  16
  17 int test__absvti2(ti_int a)
  18 {
  19     ti_int x = __absvti2(a);
  20     ti_int expected = a;
  21     if (expected < 0)
  22         expected = -expected;
  23     if (x != expected || expected < 0)
  24     {
  25         twords at;
  26         at.all = a;
  27         twords xt;
  28         xt.all = x;
  29         twords expectedt;
  30         expectedt.all = expected;
  31         printf("error in __absvti2(0x%llX%.16llX) = "
  32                "0x%llX%.16llX, expected positive 0x%llX%.16llX\n",
  33                at.s.high, at.s.low, xt.s.high, xt.s.low,
  34                expectedt.s.high, expectedt.s.low);
  35     }
  36     return x != expected;
  37 }
  38
  39 #endif
  40
  41 int main()
  42 {
  43 #ifdef CRT_HAS_128BIT
  44
  45 //     if (test__absvti2(make_ti(0x8000000000000000LL, 0)))  // should abort
  46 //         return 1;
  47     if (test__absvti2(0x0000000000000000LL))
  48         return 1;
  49     if (test__absvti2(0x0000000000000001LL))
  50         return 1;
  51     if (test__absvti2(0x0000000000000002LL))
  52         return 1;
  53     if (test__absvti2(make_ti(0x7FFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFFFELL)))
  54         return 1;
  55     if (test__absvti2(make_ti(0x7FFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFFFFLL)))
  56         return 1;
  57     if (test__absvti2(make_ti(0x8000000000000000LL, 0x0000000000000001LL)))
  58         return 1;
  59     if (test__absvti2(make_ti(0x8000000000000000LL, 0x0000000000000002LL)))
  60         return 1;
  61     if (test__absvti2(make_ti(0xFFFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFFFELL)))
  62         return 1;
  63     if (test__absvti2(make_ti(0xFFFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFFFFLL)))
  64         return 1;
  65
  66     int i;
  67     for (i = 0; i < 10000; ++i)
  68         if (test__absvti2(make_ti(((ti_int)rand() << 32) | rand(),
  69                                   ((ti_int)rand() << 32) | rand())))
  70             return 1;
  71 #else
  72     printf("skipped\n");
  73 #endif
  74     return 0;
  75 }