| 1 | //===-- Implementation of strcoll -----------------------------------------===// |
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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/strcoll.h" |
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| 10 | |
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| 11 | #include "src/__support/common.h" |
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| 12 | #include "src/__support/macros/config.h" |
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| 13 | #include "src/__support/macros/null_check.h" |
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| 14 | |
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| 15 | namespace LIBC_NAMESPACE_DECL { |
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| 16 | |
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| 17 | // TODO: Add support for locales. |
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| 18 | LLVM_LIBC_FUNCTION(int, strcoll, (const char *left, const char *right)) { |
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| 19 | LIBC_CRASH_ON_NULLPTR(left); |
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| 20 | LIBC_CRASH_ON_NULLPTR(right); |
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| 21 | for (; *left && *left == *right; ++left, ++right) |
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| 22 | ; |
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| 23 | return static_cast<int>(*left) - static_cast<int>(*right); |
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| 24 | } |
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| 25 | |
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| 26 | } // namespace LIBC_NAMESPACE_DECL |
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| 27 | |
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