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64 lines
2.0 KiB
C
64 lines
2.0 KiB
C
/*
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* MIT License
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*
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* Copyright (c) 2020 Ozan Tezcan
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef SC_MATH_H
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#define SC_MATH_H
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdint.h>
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#define sc_math_max(a, b) (((a) > (b)) ? (a) : (b))
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#define sc_math_min(a, b) (((a) > (b)) ? (b) : (a))
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/**
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* @param num num
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* @return 'true' if num is power of 2
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*/
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bool sc_math_is_pow2(size_t num);
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/**
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* @param size size
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* @return next nearest power of two of size
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*/
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size_t sc_math_to_pow2(size_t size);
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/**
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* Bytes to human readable form, e.g 10240 bytes to 10 KB.
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*
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* @param buf buf to write output
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* @param max buf size
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* @param val val to be converted into human readable form
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* @return 'buf' on success, 'NULL' on failure.
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*/
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char *sc_math_bytes_to_size(char *buf, size_t max, uint64_t val);
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/**
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* Human readable string to bytes, e.g 10 KB to 10240 bytes.
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* @param buf buf to write output
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* @return positive value on success, '-1' on error
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*/
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int64_t sc_math_size_to_bytes(const char *buf);
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#endif
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