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19 lines
398 B
C
19 lines
398 B
C
/*
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* SPDX-FileCopyrightText: Copyright (c) 1990, 1993 The Regents of the University of California. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-4-Clause-UC
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*
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* SPDX-FileContributor: 2024 Espressif Systems (Shanghai) CO LTD
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*/
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#include "strings.h"
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int fls(unsigned int mask)
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{
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if (mask == 0) {
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return (0);
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}
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return (sizeof(mask) << 3) - __builtin_clz(mask);
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}
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