45 lines
1.2 KiB
C++
45 lines
1.2 KiB
C++
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/*
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* Copyright 2023 Meta
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/sys/util.h>
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#include <zephyr/ztest.h>
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static constexpr uint8_t val = LOG2CEIL(32);
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static constexpr uint8_t val64 = LOG2CEIL(42 + BIT64(32));
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template <typename T> static inline constexpr uint8_t log2ceil(T x)
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{
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return LOG2CEIL(x);
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}
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ZTEST(pot, test_constexpr_LOG2CEIL)
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{
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zassert_equal(0, LOG2CEIL(LLONG_MIN));
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zassert_equal(0, LOG2CEIL(LONG_MIN));
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zassert_equal(0, LOG2CEIL(INT_MIN));
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zassert_equal(0, LOG2CEIL(-1));
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zassert_equal(0, LOG2CEIL(0));
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zassert_equal(0, LOG2CEIL(1));
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zassert_equal(1, LOG2CEIL(2));
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zassert_equal(2, LOG2CEIL(3));
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zassert_equal(2, LOG2CEIL(4));
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zassert_equal(3, LOG2CEIL(5));
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zassert_equal(31, LOG2CEIL(BIT(31)));
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zassert_equal(32, LOG2CEIL(BIT(31) + 1));
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zassert_equal(32, LOG2CEIL(UINT32_MAX));
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zassert_equal(32, LOG2CEIL(BIT64(32)));
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zassert_equal(33, LOG2CEIL(BIT64(32) + 1));
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zassert_equal(63, LOG2CEIL(BIT64(63) - 1));
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zassert_equal(63, LOG2CEIL(BIT64(63)));
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zassert_equal(64, LOG2CEIL(BIT64(63) + 1));
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zassert_equal(64, LOG2CEIL(UINT64_MAX));
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zassert_equal(5, val);
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zassert_equal(5, log2ceil(32));
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zassert_equal(33, val64);
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zassert_equal(33, log2ceil(42 + BIT64(32)));
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}
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