| 1 | //===-- Implementation of strlen ------------------------------------------===// |
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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/string/strlen.h" |
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| 10 | #include "src/__support/macros/config.h" |
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| 11 | #include "src/__support/macros/null_check.h" |
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| 12 | #include "src/string/string_utils.h" |
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| 13 | |
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| 14 | #include "src/__support/common.h" |
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| 15 | |
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| 16 | namespace LIBC_NAMESPACE_DECL { |
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| 17 | |
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| 18 | // TODO: investigate the performance of this function. |
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| 19 | // There might be potential for compiler optimization. |
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| 20 | LLVM_LIBC_FUNCTION(size_t, strlen, (const char *src)) { |
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| 21 | LIBC_CRASH_ON_NULLPTR(src); |
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| 22 | return internal::string_length(src); |
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| 23 | } |
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| 24 | |
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| 25 | } // namespace LIBC_NAMESPACE_DECL |
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| 26 | |
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