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13ca20d8df
There may be few common mathematics helper functions which can be used anywhere in OpenSBI project. Add a separate math helper function file to add these functions. Signed-off-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
23 lines
397 B
C
23 lines
397 B
C
/*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2020 Western Digital Corporation or its affiliates.
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*
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* Common helper functions used across OpenSBI project.
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*
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* Authors:
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* Atish Patra <atish.patra@wdc.com>
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*/
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unsigned long log2roundup(unsigned long x)
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{
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unsigned long ret = 0;
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while (ret < __riscv_xlen) {
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if (x <= (1UL << ret))
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break;
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ret++;
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}
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return ret;
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}
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