| 1 | //===-- Implementation of iscntrl------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "src/ctype/iscntrl.h" |
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| 10 | |
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| 11 | #include "src/__support/common.h" |
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| 12 | |
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| 13 | namespace LIBC_NAMESPACE { |
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| 14 | |
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| 15 | // TODO: Currently restricted to default locale. |
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| 16 | // These should be extended using locale information. |
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| 17 | LLVM_LIBC_FUNCTION(int, iscntrl, (int c)) { |
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| 18 | const unsigned ch = static_cast<unsigned>(c); |
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| 19 | return static_cast<int>(ch < 0x20 || ch == 0x7f); |
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| 20 | } |
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| 21 | |
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| 22 | } // namespace LIBC_NAMESPACE |
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| 23 | |
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