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subsurface/dive.h
Robert C. Helling 1b7abab9b9 Show ascent gas consumption separately in planner 
In the worst gase you have to provide gas for your buddy during all the
ascent. So you should have the amount of gas used in ascent as a reserve.
This patch makes the planner notes display that value separately.

Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2014-07-01 07:05:01 -07:00

767 lines
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C
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#ifndef DIVE_H
#define DIVE_H
#include <stdlib.h>
#include <stdint.h>
#include <time.h>
#include <math.h>
#include <zip.h>
#include <sqlite3.h>
#include <string.h>
/* Windows has no MIN/MAX macros - so let's just roll our own */
#define MIN(x, y) ({ \
__typeof__(x) _min1 = (x); \
__typeof__(y) _min2 = (y); \
(void) (&_min1 == &_min2); \
_min1 < _min2 ? _min1 : _min2; })
#define MAX(x, y) ({ \
__typeof__(x) _max1 = (x); \
__typeof__(y) _max2 = (y); \
(void) (&_max1 == &_max2); \
_max1 > _max2 ? _max1 : _max2; })
#define IS_FP_SAME(_a, _b) (fabs((_a) - (_b)) < 0.000001 * MAX(fabs(_a), fabs(_b)))
static inline int same_string(const char *a, const char *b)
{
return !strcmp(a ?: "", b ?: "");
}
#include <libxml/tree.h>
#include <libxslt/transform.h>
#include "sha1.h"
#include "units.h"
#ifdef __cplusplus
extern "C" {
#else
#include <stdbool.h>
#endif
enum dive_comp_type {OC, CCR}; // Flags (Open-circuit and Closed-circuit-rebreather) for setting dive computer type
struct gasmix {
fraction_t o2;
fraction_t he;
};
typedef struct
{
volume_t size;
pressure_t workingpressure;
const char *description; /* "LP85", "AL72", "AL80", "HP100+" or whatever */
} cylinder_type_t;
typedef struct
{
cylinder_type_t type;
struct gasmix gasmix;
pressure_t start, end, sample_start, sample_end;
depth_t depth;
bool manually_added;
volume_t gas_used;
volume_t deco_gas_used;
} cylinder_t;
typedef struct
{
weight_t weight;
const char *description; /* "integrated", "belt", "ankle" */
} weightsystem_t;
/*
* Events are currently based straight on what libdivecomputer gives us.
* We need to wrap these into our own events at some point to remove some of the limitations.
*/
struct event {
struct event *next;
duration_t time;
int type, flags, value;
bool deleted;
char name[];
};
extern int get_pressure_units(int mb, const char **units);
extern double get_depth_units(int mm, int *frac, const char **units);
extern double get_volume_units(unsigned int ml, int *frac, const char **units);
extern double get_temp_units(unsigned int mk, const char **units);
extern double get_weight_units(unsigned int grams, int *frac, const char **units);
extern double get_vertical_speed_units(unsigned int mms, int *frac, const char **units);
extern unsigned int units_to_depth(double depth);
/* Volume in mliter of a cylinder at pressure 'p' */
extern int gas_volume(cylinder_t *cyl, pressure_t p);
extern int wet_volume(double cuft, pressure_t p);
static inline int get_o2(const struct gasmix *mix)
{
return mix->o2.permille ?: O2_IN_AIR;
}
static inline int get_he(const struct gasmix *mix)
{
return mix->he.permille;
}
extern void sanitize_gasmix(struct gasmix *mix);
extern int gasmix_distance(const struct gasmix *a, const struct gasmix *b);
extern struct gasmix *get_gasmix_from_event(struct event *ev);
static inline bool gasmix_is_air(const struct gasmix *gasmix)
{
int o2 = gasmix->o2.permille;
int he = gasmix->he.permille;
return (he == 0) && (o2 == 0 || ((o2 >= O2_IN_AIR - 1) && (o2 <= O2_IN_AIR + 1)));
}
/* in the planner we use a null gasmix to indicate that we keep using the gas as before
* this is BAD as a null gasmix can also be interpreted as air.
* DANGER DANGER DANGER */
static inline bool gasmix_is_null(const struct gasmix *gasmix)
{
return gasmix->he.permille == 0 && gasmix->o2.permille == 0;
}
/* Linear interpolation between 'a' and 'b', when we are 'part'way into the 'whole' distance from a to b */
static inline int interpolate(int a, int b, int part, int whole)
{
/* It is doubtful that we actually need floating point for this, but whatever */
double x = (double)a * (whole - part) + (double)b * part;
return rint(x / whole);
}
/* MOD rounded to multiples of roundto mm */
static inline depth_t gas_mod(struct gasmix *mix, pressure_t po2_limit, int roundto) {
depth_t depth;
depth.mm = ((po2_limit.mbar * 1000 / get_o2(mix) * 10 - 10000) / roundto) * roundto;
return depth;
}
void get_gas_string(const struct gasmix *gasmix, char *text, int len);
const char *gasname(const struct gasmix *gasmix);
struct sample // BASE TYPE BYTES UNITS RANGE DESCRIPTION
{ // --------- ----- ----- ----- -----------
duration_t time; // uint32_t 4 seconds (0-68 yrs) elapsed dive time up to this sample
duration_t stoptime; // uint32_t 4 seconds (0-18 h) time duration of next deco stop
duration_t ndl; // uint32_t 4 seconds (0-18 h) time duration before no-deco limit
depth_t depth; // int32_t 4 mm (0-2000 km) dive depth of this sample
depth_t stopdepth; // int32_t 4 mm (0-2000 km) depth of next deco stop
temperature_t temperature; // int32_t 4 mdegrK (0-2 MdegK) ambient temperature
pressure_t cylinderpressure; // int32_t 4 mbar (0-2 Mbar) main cylinder pressure
pressure_t diluentpressure; // int32_t 4 mbar (0-2 Mbar) CCR diluent pressure (rebreather)
o2pressure_t po2; // uint16_t 2 mbar (0-65 bar) O2 partial pressure
o2pressure_t o2setpoint; // uint16_t 2 mbar (0-65 bar) CCR O2 setpoint (rebreather)
o2pressure_t o2sensor[3]; // uint16_t 6 mbar (0-65 bar) Up to 3 PO2 sensor values (rebreather)
bearing_t bearing; // int16_t 2 degrees (-32k to 32k deg) compass bearing
uint8_t sensor; // uint8_t 1 sensorID (0-255) ID of cylinder pressure sensor
uint8_t cns; // uint8_t 1 % (0-255 %) cns% accumulated
uint8_t heartbeat; // uint8_t 1 beats/m (0-255) heart rate measurement
bool in_deco; // bool 1 y/n y/n this sample is part of deco
}; // Total size of structure: 48 bytes, excluding padding at end
struct divetag {
/*
* The name of the divetag. If a translation is available, name contains
* the translated tag
*/
char *name;
/*
* If a translation is available, we write the original tag to source.
* This enables us to write a non-localized tag to the xml file.
*/
char *source;
};
struct tag_entry {
struct divetag *tag;
struct tag_entry *next;
};
/*
* divetags are only stored once, each dive only contains
* a list of tag_entries which then point to the divetags
* in the global g_tag_list
*/
extern struct tag_entry *g_tag_list;
struct divetag *taglist_add_tag(struct tag_entry **tag_list, const char *tag);
/*
* Writes all divetags in tag_list to buffer, limited by the buffer's (len)gth.
* Returns the characters written
*/
int taglist_get_tagstring(struct tag_entry *tag_list, char *buffer, int len);
void taglist_init_global();
void taglist_free(struct tag_entry *tag_list);
/*
* NOTE! The deviceid and diveid are model-specific *hashes* of
* whatever device identification that model may have. Different
* dive computers will have different identifying data, it could
* be a firmware number or a serial ID (in either string or in
* numeric format), and we do not care.
*
* The only thing we care about is that subsurface will hash
* that information the same way. So then you can check the ID
* of a dive computer by comparing the hashes for equality.
*
* A deviceid or diveid of zero is assumed to be "no ID".
*/
struct divecomputer {
timestamp_t when;
duration_t duration, surfacetime;
depth_t maxdepth, meandepth;
temperature_t airtemp, watertemp;
pressure_t surface_pressure;
enum dive_comp_type dctype; // dive computer type: OC(default) or CCR
uint8_t no_o2sensors; // rebreathers: number of O2 sensors used
int salinity; // kg per 10000 l
const char *model;
uint32_t deviceid, diveid;
int samples, alloc_samples;
struct sample *sample;
struct event *events;
struct divecomputer *next;
};
#define MAX_CYLINDERS (8)
#define MAX_WEIGHTSYSTEMS (6)
#define W_IDX_PRIMARY 0
#define W_IDX_SECONDARY 1
typedef enum {
TF_NONE,
NO_TRIP,
IN_TRIP,
ASSIGNED_TRIP,
NUM_TRIPFLAGS
} tripflag_t;
typedef struct dive_trip
{
timestamp_t when;
char *location;
char *notes;
struct dive *dives;
int nrdives;
int index;
unsigned expanded : 1, selected : 1, autogen : 1, fixup : 1;
struct dive_trip *next;
} dive_trip_t;
/* List of dive trips (sorted by date) */
extern dive_trip_t *dive_trip_list;
struct picture;
struct dive {
int number;
tripflag_t tripflag;
dive_trip_t *divetrip;
struct dive *next, **pprev;
int selected;
bool downloaded;
timestamp_t when;
char *location;
char *notes;
char *divemaster, *buddy;
int rating;
degrees_t latitude, longitude;
int visibility; /* 0 - 5 star rating */
cylinder_t cylinder[MAX_CYLINDERS];
weightsystem_t weightsystem[MAX_WEIGHTSYSTEMS];
char *suit;
int sac, otu, cns, maxcns;
/* Calculated based on dive computer data */
temperature_t mintemp, maxtemp, watertemp, airtemp;
depth_t maxdepth, meandepth;
pressure_t surface_pressure;
duration_t duration;
int salinity; // kg per 10000 l
struct tag_entry *tag_list;
struct divecomputer dc;
int id; // unique ID for this dive
struct picture *picture_list;
};
/* picture list and methods related to dive picture handling */
struct picture {
char *filename;
duration_t offset;
degrees_t latitude;
degrees_t longitude;
struct picture *next;
};
#define FOR_EACH_PICTURE(_dive) \
if (_dive) \
for (struct picture *picture = (_dive)->picture_list; picture; picture = picture->next)
extern struct picture *alloc_picture();
extern void dive_create_picture(struct dive *d, char *filename, int shift_time);
extern void dive_add_picture(struct dive *d, struct picture *newpic);
extern void dive_remove_picture(struct dive *d, struct picture *pic);
extern unsigned int dive_get_picture_count(struct dive *d);
extern void picture_load_exif_data(struct picture *p, timestamp_t *timestamp);
extern void dive_set_geodata_from_picture(struct dive *d, struct picture *pic);
static inline int dive_has_gps_location(struct dive *dive)
{
return dive->latitude.udeg || dive->longitude.udeg;
}
static inline void copy_gps_location(struct dive *from, struct dive *to)
{
if (from && to) {
to->latitude.udeg = from->latitude.udeg;
to->longitude.udeg = from->longitude.udeg;
}
}
static inline int get_surface_pressure_in_mbar(const struct dive *dive, bool non_null)
{
int mbar = dive->surface_pressure.mbar;
if (!mbar && non_null)
mbar = SURFACE_PRESSURE;
return mbar;
}
/* Pa = N/m^2 - so we determine the weight (in N) of the mass of 10m
* of water (and use standard salt water at 1.03kg per liter if we don't know salinity)
* and add that to the surface pressure (or to 1013 if that's unknown) */
static inline int calculate_depth_to_mbar(int depth, pressure_t surface_pressure, int salinity)
{
double specific_weight;
int mbar = surface_pressure.mbar;
if (!mbar)
mbar = SURFACE_PRESSURE;
if (!salinity)
salinity = SEAWATER_SALINITY;
specific_weight = salinity / 10000.0 * 0.981;
mbar += rint(depth / 10.0 * specific_weight);
return mbar;
}
static inline int depth_to_mbar(int depth, struct dive *dive)
{
return calculate_depth_to_mbar(depth, dive->surface_pressure, dive->salinity);
}
static inline double depth_to_atm(int depth, struct dive *dive)
{
return mbar_to_atm(depth_to_mbar(depth, dive));
}
/* for the inverse calculation we use just the relative pressure
* (that's the one that some dive computers like the Uemis Zurich
* provide - for the other models that do this libdivecomputer has to
* take care of this, but the Uemis we support natively */
static inline int rel_mbar_to_depth(int mbar, struct dive *dive)
{
int cm;
double specific_weight = 1.03 * 0.981;
if (dive->dc.salinity)
specific_weight = dive->dc.salinity / 10000.0 * 0.981;
/* whole mbar gives us cm precision */
cm = rint(mbar / specific_weight);
return cm * 10;
}
#define SURFACE_THRESHOLD 750 /* somewhat arbitrary: only below 75cm is it really diving */
/* this is a global spot for a temporary dive structure that we use to
* be able to edit a dive without unintended side effects */
extern struct dive edit_dive;
extern short autogroup;
/* random threashold: three days without diving -> new trip
* this works very well for people who usually dive as part of a trip and don't
* regularly dive at a local facility; this is why trips are an optional feature */
#define TRIP_THRESHOLD 3600 * 24 * 3
#define UNGROUPED_DIVE(_dive) ((_dive)->tripflag == NO_TRIP)
#define DIVE_IN_TRIP(_dive) ((_dive)->tripflag == IN_TRIP || (_dive)->tripflag == ASSIGNED_TRIP)
#define DIVE_NEEDS_TRIP(_dive) ((_dive)->tripflag == TF_NONE)
extern void add_dive_to_trip(struct dive *, dive_trip_t *);
extern void delete_single_dive(int idx);
extern void add_single_dive(int idx, struct dive *dive);
extern void insert_trip(dive_trip_t **trip);
extern const struct units SI_units, IMPERIAL_units;
extern struct units xml_parsing_units;
extern struct units *get_units(void);
extern int run_survey, verbose, quit;
struct dive_table {
int nr, allocated, preexisting;
struct dive **dives;
};
extern struct dive_table dive_table;
extern int selected_dive;
extern unsigned int dc_number;
#define current_dive (get_dive(selected_dive))
#define current_dc (get_dive_dc(current_dive, dc_number))
static inline struct dive *get_gps_location(int nr, struct dive_table *table)
{
if (nr >= table->nr || nr < 0)
return NULL;
return table->dives[nr];
}
static inline struct dive *get_dive(int nr)
{
if (nr >= dive_table.nr || nr < 0)
return NULL;
return dive_table.dives[nr];
}
static inline unsigned int number_of_computers(struct dive *dive)
{
unsigned int total_number = 0;
struct divecomputer *dc = &dive->dc;
if (!dive)
return 1;
do {
total_number++;
dc = dc->next;
} while (dc);
return total_number;
}
static inline struct divecomputer *get_dive_dc(struct dive *dive, int nr)
{
struct divecomputer *dc = &dive->dc;
while (nr-- > 0) {
dc = dc->next;
if (!dc)
return &dive->dc;
}
return dc;
}
extern void make_first_dc(void);
extern int count_divecomputers(void);
extern void delete_current_divecomputer(void);
/*
* Iterate over each dive, with the first parameter being the index
* iterator variable, and the second one being the dive one.
*
* I don't think anybody really wants the index, and we could make
* it local to the for-loop, but that would make us requires C99.
*/
#define for_each_dive(_i, _x) \
for ((_i) = 0; ((_x) = get_dive(_i)) != NULL; (_i)++)
#define for_each_dc(_dive, _dc) \
for (_dc = &_dive->dc; _dc; _dc = _dc->next)
#define for_each_gps_location(_i, _x) \
for ((_i) = 0; ((_x) = get_gps_location(_i, &gps_location_table)) != NULL; (_i)++)
static inline struct dive *get_dive_by_uemis_diveid(uint32_t diveid, uint32_t deviceid)
{
int i;
struct dive *dive;
for_each_dive (i, dive) {
struct divecomputer *dc = &dive->dc;
do {
if (dc->diveid == diveid && dc->deviceid == deviceid)
return dive;
} while ((dc = dc->next) != NULL);
}
return NULL;
}
static inline struct dive *get_dive_by_uniq_id(int id)
{
int i;
struct dive *dive = NULL;
for_each_dive (i, dive) {
if (dive->id == id)
break;
}
#ifdef DEBUG
if (dive == NULL) {
fprintf(stderr, "Invalid id %x passed to get_dive_by_diveid, try to fix the code\n", id);
exit(1);
}
#endif
return dive;
}
static inline int get_idx_by_uniq_id(int id)
{
int i;
struct dive *dive = NULL;
for_each_dive (i, dive) {
if (dive->id == id)
break;
}
#ifdef DEBUG
if (dive == NULL) {
fprintf(stderr, "Invalid id %x passed to get_dive_by_diveid, try to fix the code\n", id);
exit(1);
}
#endif
return i;
}
#ifdef __cplusplus
extern "C" {
#endif
extern int report_error(const char *fmt, ...);
extern const char *get_error_string(void);
extern struct dive *find_dive_including(timestamp_t when);
extern bool dive_within_time_range(struct dive *dive, timestamp_t when, timestamp_t offset);
struct dive *find_dive_n_near(timestamp_t when, int n, timestamp_t offset);
/* Check if two dive computer entries are the exact same dive (-1=no/0=maybe/1=yes) */
extern int match_one_dc(struct divecomputer *a, struct divecomputer *b);
extern void parse_xml_init(void);
extern void parse_xml_buffer(const char *url, const char *buf, int size, struct dive_table *table, const char **params);
extern void parse_xml_exit(void);
extern void set_filename(const char *filename, bool force);
extern int parse_dm4_buffer(sqlite3 *handle, const char *url, const char *buf, int size, struct dive_table *table);
extern int parse_shearwater_buffer(sqlite3 *handle, const char *url, const char *buf, int size, struct dive_table *table);
extern int parse_file(const char *filename);
extern int parse_csv_file(const char *filename, int time, int depth, int temp, int po2f, int cnsf, int stopdepthf, int sepidx, const char *csvtemplate, int units);
extern int parse_manual_file(const char *filename, int separator_index, int units, int number, int date, int time, int duration, int location, int gps, int maxdepth, int meandepth, int buddy, int notes, int weight, int tags);
extern int save_dives(const char *filename);
extern int save_dives_logic(const char *filename, bool select_only);
extern int save_dive(FILE *f, struct dive *dive);
extern int export_dives_xslt(const char *filename, const bool selected, const char *export_xslt);
struct git_oid;
struct git_repository;
#define dummy_git_repository ((git_repository *)3ul) /* Random bogus pointer, not NULL */
extern struct git_repository *is_git_repository(const char *filename, const char **branchp);
extern int git_save_dives(struct git_repository *, const char *, bool select_only);
extern int git_load_dives(struct git_repository *, const char *);
extern const char *saved_git_id;
extern void clear_git_id(void);
extern void set_git_id(const struct git_oid *);
struct user_info {
const char *name;
const char *email;
};
extern void subsurface_user_info(struct user_info *);
extern int subsurface_rename(const char *path, const char *newpath);
extern int subsurface_open(const char *path, int oflags, mode_t mode);
extern FILE *subsurface_fopen(const char *path, const char *mode);
extern void *subsurface_opendir(const char *path);
extern struct zip *subsurface_zip_open_readonly(const char *path, int flags, int *errorp);
extern int subsurface_zip_close(struct zip *zip);
extern void subsurface_console_init(bool dedicated);
extern void subsurface_console_exit(void);
extern void shift_times(const timestamp_t amount);
extern timestamp_t get_times();
extern xsltStylesheetPtr get_stylesheet(const char *name);
extern timestamp_t utc_mktime(struct tm *tm);
extern void utc_mkdate(timestamp_t, struct tm *tm);
extern struct dive *alloc_dive(void);
extern void record_dive(struct dive *dive);
extern struct sample *prepare_sample(struct divecomputer *dc);
extern void finish_sample(struct divecomputer *dc);
extern bool has_hr_data(struct divecomputer *dc);
extern void sort_table(struct dive_table *table);
extern struct dive *fixup_dive(struct dive *dive);
extern int dive_getUniqID(struct dive *d);
extern unsigned int dc_airtemp(struct divecomputer *dc);
extern unsigned int dc_watertemp(struct divecomputer *dc);
extern struct dive *merge_dives(struct dive *a, struct dive *b, int offset, bool prefer_downloaded);
extern struct dive *try_to_merge(struct dive *a, struct dive *b, bool prefer_downloaded);
extern void renumber_dives(int start_nr, bool selected_only);
extern void copy_events(struct dive *s, struct dive *d);
extern void copy_cylinders(struct dive *s, struct dive *d, bool used_only);
extern void copy_samples(struct dive *s, struct dive *d);
extern bool cylinder_is_used(struct dive *d, cylinder_t *cyl);
extern void fill_default_cylinder(cylinder_t *cyl);
extern void add_gas_switch_event(struct dive *dive, struct divecomputer *dc, int time, int idx);
extern void add_event(struct divecomputer *dc, int time, int type, int flags, int value, const char *name);
extern void remove_event(struct event *event);
extern void per_cylinder_mean_depth(struct dive *dive, struct divecomputer *dc, int *mean, int *duration);
extern int get_cylinder_index(struct dive *dive, struct event *ev);
extern int nr_cylinders(struct dive *dive);
extern int nr_weightsystems(struct dive *dive);
/* UI related protopypes */
// extern void report_error(GError* error);
extern void add_cylinder_description(cylinder_type_t *);
extern void add_weightsystem_description(weightsystem_t *);
extern void remember_event(const char *eventname);
#if WE_DONT_USE_THIS /* this is a missing feature in Qt - selecting which events to display */
extern int evn_foreach(void (*callback)(const char *, bool *, void *), void *data);
#endif /* WE_DONT_USE_THIS */
extern void clear_events(void);
extern void set_dc_nickname(struct dive *dive);
extern void set_autogroup(bool value);
extern int total_weight(struct dive *);
#ifdef __cplusplus
}
#endif
#define DIVE_ERROR_PARSE 1
#define DIVE_ERROR_PLAN 2
const char *weekday(int wday);
const char *monthname(int mon);
#define UTF8_DEGREE "\xc2\xb0"
#define UTF8_DELTA "\xce\x94"
#define UTF8_UPWARDS_ARROW "\xE2\x86\x91"
#define UTF8_DOWNWARDS_ARROW "\xE2\x86\x93"
#define UTF8_AVERAGE "\xc3\xb8"
#define UTF8_SUBSCRIPT_2 "\xe2\x82\x82"
#define UTF8_WHITESTAR "\xe2\x98\x86"
#define UTF8_BLACKSTAR "\xe2\x98\x85"
extern const char *existing_filename;
extern void subsurface_command_line_init(int *, char ***);
extern void subsurface_command_line_exit(int *, char ***);
#define FRACTION(n, x) ((unsigned)(n) / (x)), ((unsigned)(n) % (x))
extern double add_segment(double pressure, const struct gasmix *gasmix, int period_in_seconds, int setpoint, const struct dive *dive);
extern void clear_deco(double surface_pressure);
extern void dump_tissues(void);
extern unsigned int deco_allowed_depth(double tissues_tolerance, double surface_pressure, struct dive *dive, bool smooth);
extern void set_gf(short gflow, short gfhigh, bool gf_low_at_maxdepth);
extern void cache_deco_state(double, char **datap);
extern double restore_deco_state(char *data);
/* this should be converted to use our types */
struct divedatapoint {
int time;
unsigned int depth;
struct gasmix gasmix;
int po2;
bool entered;
struct divedatapoint *next;
};
struct diveplan {
timestamp_t when;
int surface_pressure; /* mbar */
int bottomsac; /* ml/min */
int decosac; /* ml/min */
short gflow;
short gfhigh;
struct divedatapoint *dp;
};
struct divedatapoint *plan_add_segment(struct diveplan *diveplan, int duration, int depth, struct gasmix gasmix, int po2, bool entered);
struct divedatapoint *create_dp(int time_incr, int depth, struct gasmix gasmix, int po2);
#if DEBUG_PLAN
void dump_plan(struct diveplan *diveplan);
#endif
void plan(struct diveplan *diveplan, char **cached_datap, struct dive **divep, struct dive *master_dive, bool add_deco, bool show_disclaimer);
void delete_single_dive(int idx);
struct event *get_next_event(struct event *event, char *name);
/* these structs holds the information that
* describes the cylinders / weight systems.
* they are global variables initialized in equipment.c
* used to fill the combobox in the add/edit cylinder
* dialog
*/
struct tank_info_t {
const char *name;
int cuft, ml, psi, bar;
};
extern struct tank_info_t tank_info[100];
struct ws_info_t {
const char *name;
int grams;
};
extern struct ws_info_t ws_info[100];
extern bool cylinder_nodata(cylinder_t *cyl);
extern bool cylinder_none(void *_data);
extern bool weightsystem_none(void *_data);
extern bool no_weightsystems(weightsystem_t *ws);
extern bool weightsystems_equal(weightsystem_t *ws1, weightsystem_t *ws2);
extern void remove_cylinder(struct dive *dive, int idx);
extern void remove_weightsystem(struct dive *dive, int idx);
extern void reset_cylinders(struct dive *dive);
/*
* String handling.
*/
#define STRTOD_NO_SIGN 0x01
#define STRTOD_NO_DOT 0x02
#define STRTOD_NO_COMMA 0x04
#define STRTOD_NO_EXPONENT 0x08
extern double strtod_flags(const char *str, const char **ptr, unsigned int flags);
#define STRTOD_ASCII (STRTOD_NO_COMMA)
#define ascii_strtod(str, ptr) strtod_flags(str, ptr, STRTOD_ASCII)
extern void set_save_userid_local(short value);
extern void set_userid(char *user_id);
#ifdef __cplusplus
}
#endif
extern weight_t string_to_weight(const char *str);
extern depth_t string_to_depth(const char *str);
extern pressure_t string_to_pressure(const char *str);
extern volume_t string_to_volume(const char *str, pressure_t workp);
extern fraction_t string_to_fraction(const char *str);
extern int average_depth(struct diveplan *dive);
#include "pref.h"
#endif // DIVE_H
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