compiler-rt/test/builtins/Unit/negvsi2_test.c

   1 // RUN: %clang_builtins %s %librt -o %t && %run %t
   2 // REQUIRES: librt_has_negvsi2
   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 si_int __negvsi2(si_int a);
  12
  13 int test__negvsi2(si_int a)
  14 {
  15     si_int x = __negvsi2(a);
  16     si_int expected = -a;
  17     if (x != expected)
  18         printf("error in __negvsi2(0x%X) = %d, expected %d\n", a, x, expected);
  19     return x != expected;
  20 }
  21
  22 int main()
  23 {
  24 //     if (test__negvsi2(0x80000000))  // should abort
  25 //         return 1;
  26     if (test__negvsi2(0x00000000))
  27         return 1;
  28     if (test__negvsi2(0x00000001))
  29         return 1;
  30     if (test__negvsi2(0x00000002))
  31         return 1;
  32     if (test__negvsi2(0x7FFFFFFE))
  33         return 1;
  34     if (test__negvsi2(0x7FFFFFFF))
  35         return 1;
  36     if (test__negvsi2(0x80000001))
  37         return 1;
  38     if (test__negvsi2(0x80000002))
  39         return 1;
  40     if (test__negvsi2(0xFFFFFFFE))
  41         return 1;
  42     if (test__negvsi2(0xFFFFFFFF))
  43         return 1;
  44
  45     return 0;
  46 }