subsurface/core/subsurface-time.h

// SPDX-License-Identifier: GPL-2.0
#ifndef TIME_H
#define TIME_H

#include "units.h"
#include <time.h>

#ifdef __cplusplus
extern "C" {
#endif

extern timestamp_t utc_mktime(struct tm *tm);
extern void utc_mkdate(timestamp_t, struct tm *tm);
extern int utc_year(timestamp_t timestamp);
extern int utc_weekday(timestamp_t timestamp);

#ifdef __cplusplus
}
#endif

#endif
cleanup: move declaration of utc_mk* functions to new subsurface-time.h header No point in slurping in all of dive.h for translation units that only want to do some time manipulation without ever touching a dive. Don't call the header "time.h", because we don't want to end up in a confusion with the system header of the same name. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at> 2020-05-01 14:07:59 +02:00			`// SPDX-License-Identifier: GPL-2.0`
			`#ifndef TIME_H`
			`#define TIME_H`

			`#include "units.h"`
			`#include <time.h>`

			`#ifdef __cplusplus`
			`extern "C" {`
			`#endif`

			`extern timestamp_t utc_mktime(struct tm *tm);`
			`extern void utc_mkdate(timestamp_t, struct tm *tm);`
core: add functions to core/time.c To support the new filter code, add helper functions that turn timestamps into year and day-of-week to core/time.c. Internally, these functions simply call utc_mktime() to break down the timestamp and then extract the wanted value. This may appear inefficient, but testing shows that modern compilers are quite effective in throwing away the unneeded calculations. FWIW in this respect clang10 outperformed gcc10. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at> 2020-05-23 11:59:53 +02:00			`extern int utc_year(timestamp_t timestamp);`
			`extern int utc_weekday(timestamp_t timestamp);`
cleanup: move declaration of utc_mk* functions to new subsurface-time.h header No point in slurping in all of dive.h for translation units that only want to do some time manipulation without ever touching a dive. Don't call the header "time.h", because we don't want to end up in a confusion with the system header of the same name. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at> 2020-05-01 14:07:59 +02:00
			`#ifdef __cplusplus`
			`}`
			`#endif`

			`#endif`