compiler-rt/test/builtins/Unit/negvdi2_test.c

   1 // RUN: %clang_builtins %s %librt -o %t && %run %t
   2 // REQUIRES: librt_has_negvdi2
   3
   4 #include "int_lib.h"
   5 #include <stdio.h>
   6
   7 // Returns: -a
   8
   9 // Effects: aborts if -a overflows
  10
  11 COMPILER_RT_ABI di_int __negvdi2(di_int a);
  12
  13 int test__negvdi2(di_int a)
  14 {
  15     di_int x = __negvdi2(a);
  16     di_int expected = -a;
  17     if (x != expected)
  18         printf("error in __negvdi2(0x%llX) = %lld, expected %lld\n",
  19                a, x, expected);
  20     return x != expected;
  21 }
  22
  23 int main()
  24 {
  25 //     if (test__negvdi2(0x8000000000000000LL))  // should abort
  26 //         return 1;
  27     if (test__negvdi2(0x0000000000000000LL))
  28         return 1;
  29     if (test__negvdi2(0x0000000000000001LL))
  30         return 1;
  31     if (test__negvdi2(0x0000000000000002LL))
  32         return 1;
  33     if (test__negvdi2(0x7FFFFFFFFFFFFFFELL))
  34         return 1;
  35     if (test__negvdi2(0x7FFFFFFFFFFFFFFFLL))
  36         return 1;
  37     if (test__negvdi2(0x8000000000000001LL))
  38         return 1;
  39     if (test__negvdi2(0x8000000000000002LL))
  40         return 1;
  41     if (test__negvdi2(0xFFFFFFFFFFFFFFFELL))
  42         return 1;
  43     if (test__negvdi2(0xFFFFFFFFFFFFFFFFLL))
  44         return 1;
  45
  46     return 0;
  47 }