117 lines
3.1 KiB
C
117 lines
3.1 KiB
C
/* EINA - EFL data type library
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* Copyright (C) 2020 Ali Alzyod
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library;
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* if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef EINA_RANGE_H_
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#define EINA_RANGE_H_
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#include "eina_types.h"
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#include "eina_cpu.h"
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#define EINA_RANGE(start, length) ((Eina_Range) { (start), (length) })
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#define EINA_RANGE_FROM_TO(from, to) ((Eina_Range) { MIN((from),(to)), ABS((to) - (from)) })
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#define EINA_RANGE_ZERO() EINA_RANGE(0, 0)
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#define EINA_RANGE_EMPTY() ((Eina_Range) EINA_RANGE_ZERO())
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/** @brief A Int range */
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typedef struct _Eina_Range
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{
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size_t start;
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size_t length;
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} Eina_Range;
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/**
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* @brief convenience macro for comparing two Eina_Range structs
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* @param[in] a An Eina_Range
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* @param[in] b An Eina_Range
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* @return 1 if the structs are equal, 0 if they are not
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* @since 1.24
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*/
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#define EINA_RANGE_EQ(a, b) \
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(((a).start == (b).start) && ((a).length == (b).length))
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/**
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* @brief Get end value in range (not included in range).
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*
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* @param[in] range The Range.
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* @return The sum of end and length of the range.
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*
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* @since 1.24
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* */
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static inline size_t eina_range_end(const Eina_Range *range);
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/**
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* @brief Intersection between two ranges.
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*
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* @param[in] range The first range.
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* @param[in] range2 The second range.
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* @return The intersection between two ranges, If ranges do not intersect return length will be 0.
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*
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* @since 1.24
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* */
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static inline Eina_Range eina_range_intersect(const Eina_Range *range, const Eina_Range *range2);
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/**
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* @brief Union between two ranges.
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*
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* @param[in] range The first range.
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* @param[in] range2 The second range.
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* @return The union between two ranges.
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*
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* @since 1.24
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* */
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static inline Eina_Range eina_range_union(const Eina_Range *range, const Eina_Range *range2);
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/**
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* @brief Check if value is set in a range.
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*
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* @param[in] range The range.
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* @return Wither value set within range.
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*
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* @since 1.24
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* */
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static inline Eina_Bool eina_range_contains(const Eina_Range *range, size_t value);
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/**
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* @brief Check if two ranges are equal.
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*
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* @param[in] range The first range.
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* @param[in] range2 The second range.
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* @return Wither two ranges are equal.
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*
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* @since 1.24
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* */
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static inline Eina_Bool eina_range_equal(const Eina_Range *range, const Eina_Range *range2);
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/**
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* @brief Check if two ranges are equal.
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*
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* @param[in] min The min value in range.
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* @param[in] max The max value in range.
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* @return range.
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*
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* @since 1.24
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* */
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static inline Eina_Range eina_range_from_to(size_t min, size_t max);
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#include "eina_inline_range.x"
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#endif /*EINA_RANGE_H_*/
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