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Diffstat (limited to 'test/Unit/subvdi3_test.c')
-rw-r--r-- | test/Unit/subvdi3_test.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/test/Unit/subvdi3_test.c b/test/Unit/subvdi3_test.c new file mode 100644 index 000000000000..8af79288fa9b --- /dev/null +++ b/test/Unit/subvdi3_test.c @@ -0,0 +1,60 @@ +//===-- subvdi3_test.c - Test __subvdi3 -----------------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file tests __subvdi3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// + +#include "int_lib.h" +#include <stdio.h> +#include <stdlib.h> + +// Returns: a - b + +// Effects: aborts if a - b overflows + +di_int __subvdi3(di_int a, di_int b); + +int test__subvdi3(di_int a, di_int b) +{ + di_int x = __subvdi3(a, b); + di_int expected = a - b; + if (x != expected) + printf("error in test__subvsi3(0x%llX, 0x%llX) = %lld, expected %lld\n", + a, b, x, expected); + return x != expected; +} + +int main() +{ +// test__subvdi3(0x8000000000000000LL, 1); // should abort +// test__subvdi3(0, 0x8000000000000000LL); // should abort +// test__subvdi3(1, 0x8000000000000000LL); // should abort +// test__subvdi3(0x7FFFFFFFFFFFFFFFLL, -1); // should abort +// test__subvdi3(-2, 0x7FFFFFFFFFFFFFFFLL); // should abort + + if (test__subvdi3(0x8000000000000000LL, -1)) + return 1; + if (test__subvdi3(0x8000000000000000LL, 0)) + return 1; + if (test__subvdi3(-1, 0x8000000000000000LL)) + return 1; + if (test__subvdi3(0x7FFFFFFFFFFFFFFLL, 1)) + return 1; + if (test__subvdi3(0x7FFFFFFFFFFFFFFFLL, 0)) + return 1; + if (test__subvdi3(1, 0x7FFFFFFFFFFFFFFLL)) + return 1; + if (test__subvdi3(0, 0x7FFFFFFFFFFFFFFFLL)) + return 1; + if (test__subvdi3(-1, 0x7FFFFFFFFFFFFFFFLL)) + return 1; + + return 0; +} |