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/*****************************************************************************
*
* version - simple version handling functions for major.minor version
* types
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
****************************************************************************/
#ifndef CCAN_VERSION_H
#define CCAN_VERSION_H
#include <stdint.h>
struct version {
uint32_t _v; /* major << 16 | minor */
};
/**
* version_major - return the major version of the given struct
* @v: the version number to obtain the major number from
*/
static inline uint16_t version_major(struct version v) {
return (v._v & 0xFFFF0000) >> 16;
}
/**
* version_minor - return the minor version of the given struct
* @v: the version number to obtain the minor number from
*/
static inline uint16_t version_minor(const struct version v) {
return v._v & 0xFFFF;
}
/**
* version - create a new version number
* @major: major version number
* @minor: minor version number
*/
static inline struct version version(uint16_t major, uint16_t minor)
{
struct version v = { ._v = major << 16 | minor };
return v;
}
/**
* version_cmp - compare two versions
* @a: the first version number
* @b: the second version number
* @return a number greater, equal, or less than 0 if a is greater, equal or
* less than b, respectively
*
* Example:
* struct version a = version(1, 0);
* struct version b = version(1, 3);
* if (version_cmp(a, b) < 0)
* printf("b is smaller than b\n");
*/
static inline int version_cmp(struct version a, struct version b)
{
return (a._v == b._v) ? 0 : (a._v > b._v) ? 1 : - 1;
}
#endif /* CCAN_VERSION_H */
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