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Diffstat (limited to 'test/Unit/mulosi4_test.c')
| -rw-r--r-- | test/Unit/mulosi4_test.c | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/test/Unit/mulosi4_test.c b/test/Unit/mulosi4_test.c new file mode 100644 index 000000000..fc509db2c --- /dev/null +++ b/test/Unit/mulosi4_test.c @@ -0,0 +1,156 @@ +//===-- mulosi4_test.c - Test __mulosi4 -----------------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is dual licensed under the MIT and the University of Illinois Open +// Source Licenses. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file tests __mulosi4 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// + +#include "int_lib.h" +#include <stdio.h> + +// Returns: a * b + +// Effects: aborts if a * b overflows + +si_int __mulosi4(si_int a, si_int b, int *overflow); + +int test__mulosi4(si_int a, si_int b, si_int expected, int expected_overflow) +{ + int ov; + si_int x = __mulosi4(a, b, &ov); + if (ov != expected_overflow) + printf("error in __mulosi4: overflow=%d expected=%d\n", + ov, expected_overflow); + else if (!expected_overflow && x != expected) { + printf("error in __mulosi4: 0x%X * 0x%X = 0x%X (overflow=%d), " + "expected 0x%X (overflow=%d)\n", + a, b, x, ov, expected, expected_overflow); + return 1; + } + return 0; +} + + +int main() +{ + if (test__mulosi4(0, 0, 0, 0)) + return 1; + if (test__mulosi4(0, 1, 0, 0)) + return 1; + if (test__mulosi4(1, 0, 0, 0)) + return 1; + if (test__mulosi4(0, 10, 0, 0)) + return 1; + if (test__mulosi4(10, 0, 0, 0)) + return 1; + if (test__mulosi4(0, 0x1234567, 0, 0)) + return 1; + if (test__mulosi4(0x1234567, 0, 0, 0)) + return 1; + + if (test__mulosi4(0, -1, 0, 0)) + return 1; + if (test__mulosi4(-1, 0, 0, 0)) + return 1; + if (test__mulosi4(0, -10, 0, 0)) + return 1; + if (test__mulosi4(-10, 0, 0, 0)) + return 1; + if (test__mulosi4(0, -0x1234567, 0, 0)) + return 1; + if (test__mulosi4(-0x1234567, 0, 0, 0)) + return 1; + + if (test__mulosi4(1, 1, 1, 0)) + return 1; + if (test__mulosi4(1, 10, 10, 0)) + return 1; + if (test__mulosi4(10, 1, 10, 0)) + return 1; + if (test__mulosi4(1, 0x1234567, 0x1234567, 0)) + return 1; + if (test__mulosi4(0x1234567, 1, 0x1234567, 0)) + return 1; + + if (test__mulosi4(1, -1, -1, 0)) + return 1; + if (test__mulosi4(1, -10, -10, 0)) + return 1; + if (test__mulosi4(-10, 1, -10, 0)) + return 1; + if (test__mulosi4(1, -0x1234567, -0x1234567, 0)) + return 1; + if (test__mulosi4(-0x1234567, 1, -0x1234567, 0)) + return 1; + + if (test__mulosi4(0x7FFFFFFF, -2, 0x80000001, 1)) + return 1; + if (test__mulosi4(-2, 0x7FFFFFFF, 0x80000001, 1)) + return 1; + if (test__mulosi4(0x7FFFFFFF, -1, 0x80000001, 0)) + return 1; + if (test__mulosi4(-1, 0x7FFFFFFF, 0x80000001, 0)) + return 1; + if (test__mulosi4(0x7FFFFFFF, 0, 0, 0)) + return 1; + if (test__mulosi4(0, 0x7FFFFFFF, 0, 0)) + return 1; + if (test__mulosi4(0x7FFFFFFF, 1, 0x7FFFFFFF, 0)) + return 1; + if (test__mulosi4(1, 0x7FFFFFFF, 0x7FFFFFFF, 0)) + return 1; + if (test__mulosi4(0x7FFFFFFF, 2, 0x80000001, 1)) + return 1; + if (test__mulosi4(2, 0x7FFFFFFF, 0x80000001, 1)) + return 1; + + if (test__mulosi4(0x80000000, -2, 0x80000000, 1)) + return 1; + if (test__mulosi4(-2, 0x80000000, 0x80000000, 1)) + return 1; + if (test__mulosi4(0x80000000, -1, 0x80000000, 1)) + return 1; + if (test__mulosi4(-1, 0x80000000, 0x80000000, 1)) + return 1; + if (test__mulosi4(0x80000000, 0, 0, 0)) + return 1; + if (test__mulosi4(0, 0x80000000, 0, 0)) + return 1; + if (test__mulosi4(0x80000000, 1, 0x80000000, 0)) + return 1; + if (test__mulosi4(1, 0x80000000, 0x80000000, 0)) + return 1; + if (test__mulosi4(0x80000000, 2, 0x80000000, 1)) + return 1; + if (test__mulosi4(2, 0x80000000, 0x80000000, 1)) + return 1; + + if (test__mulosi4(0x80000001, -2, 0x80000001, 1)) + return 1; + if (test__mulosi4(-2, 0x80000001, 0x80000001, 1)) + return 1; + if (test__mulosi4(0x80000001, -1, 0x7FFFFFFF, 0)) + return 1; + if (test__mulosi4(-1, 0x80000001, 0x7FFFFFFF, 0)) + return 1; + if (test__mulosi4(0x80000001, 0, 0, 0)) + return 1; + if (test__mulosi4(0, 0x80000001, 0, 0)) + return 1; + if (test__mulosi4(0x80000001, 1, 0x80000001, 0)) + return 1; + if (test__mulosi4(1, 0x80000001, 0x80000001, 0)) + return 1; + if (test__mulosi4(0x80000001, 2, 0x80000000, 1)) + return 1; + if (test__mulosi4(2, 0x80000001, 0x80000000, 1)) + return 1; + + return 0; +} |