4684ddb6aa
- import libcxx - reduce targets to the one when compiled as a tools Change-Id: Iabb8427f80ff8e89463559a28bcb8b4f2bdbc496
68 lines
1.8 KiB
C
68 lines
1.8 KiB
C
//===-- ctzdi2_test.c - Test __ctzdi2 -------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file tests __ctzdi2 for the compiler_rt library.
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//
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//===----------------------------------------------------------------------===//
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#include "int_lib.h"
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#include <stdio.h>
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// Returns: the number of trailing 0-bits
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// Precondition: a != 0
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si_int __ctzdi2(di_int a);
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int test__ctzdi2(di_int a, si_int expected)
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{
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si_int x = __ctzdi2(a);
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if (x != expected)
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printf("error in __ctzdi2(0x%llX) = %d, expected %d\n", a, x, expected);
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return x != expected;
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}
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char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};
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int main()
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{
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// if (test__ctzdi2(0x00000000, N)) // undefined
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// return 1;
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if (test__ctzdi2(0x00000001, 0))
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return 1;
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if (test__ctzdi2(0x00000002, 1))
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return 1;
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if (test__ctzdi2(0x00000003, 0))
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return 1;
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if (test__ctzdi2(0x00000004, 2))
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return 1;
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if (test__ctzdi2(0x00000005, 0))
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return 1;
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if (test__ctzdi2(0x0000000A, 1))
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return 1;
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if (test__ctzdi2(0x10000000, 28))
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return 1;
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if (test__ctzdi2(0x20000000, 29))
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return 1;
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if (test__ctzdi2(0x60000000, 29))
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return 1;
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if (test__ctzdi2(0x80000000uLL, 31))
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return 1;
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if (test__ctzdi2(0x0000050000000000uLL, 40))
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return 1;
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if (test__ctzdi2(0x0200080000000000uLL, 43))
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return 1;
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if (test__ctzdi2(0x7200000000000000uLL, 57))
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return 1;
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if (test__ctzdi2(0x8000000000000000uLL, 63))
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return 1;
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return 0;
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}
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