This file is indexed.

/usr/include/projects.h is in libproj-dev 4.9.2-2.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
/******************************************************************************
 * Project:  PROJ.4
 * Purpose:  Primary (private) include file for PROJ.4 library.
 * Author:   Gerald Evenden
 *
 ******************************************************************************
 * Copyright (c) 2000, Frank Warmerdam
 *
 * 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.
 *****************************************************************************/

/* General projections header file */
#ifndef PROJECTS_H
#define PROJECTS_H

#ifdef _MSC_VER
#  ifndef _CRT_SECURE_NO_DEPRECATE
#    define _CRT_SECURE_NO_DEPRECATE
#  endif
#  ifndef _CRT_NONSTDC_NO_DEPRECATE
#    define _CRT_NONSTDC_NO_DEPRECATE
#  endif
#endif

/* standard inclusions */
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#ifdef __cplusplus
#define C_NAMESPACE extern "C"
#define C_NAMESPACE_VAR extern "C"
extern "C" {
#else    
#define C_NAMESPACE extern
#define C_NAMESPACE_VAR
#endif

#ifndef NULL
#  define NULL	0
#endif

#ifndef FALSE
#  define FALSE	0
#endif

#ifndef TRUE
#  define TRUE	1
#endif

#ifndef MAX
#  define MIN(a,b)      ((a<b) ? a : b)
#  define MAX(a,b)      ((a>b) ? a : b)
#endif

#ifndef ABS
#  define ABS(x)        ((x<0) ? (-1*(x)) : x)
#endif

    /* maximum path/filename */
#ifndef MAX_PATH_FILENAME
#define MAX_PATH_FILENAME 1024
#endif
	/* prototype hypot for systems where absent */
#ifndef _WIN32
extern double hypot(double, double);
#endif

#ifdef _WIN32_WCE
#  include <wce_stdlib.h>
#  include <wce_stdio.h>
#  define rewind wceex_rewind
#  define getenv wceex_getenv
#  define strdup _strdup
#  define hypot _hypot
#endif

	/* some useful constants */
#define HALFPI		1.5707963267948966
#define FORTPI		0.78539816339744833
#define PI		3.14159265358979323846
#define TWOPI		6.2831853071795864769

/* maximum tag id length for +init and default files */
#ifndef ID_TAG_MAX
#define ID_TAG_MAX 50
#endif

/* Use WIN32 as a standard windows 32 bit declaration */
#if defined(_WIN32) && !defined(WIN32) && !defined(_WIN32_WCE)
#  define WIN32
#endif

#if defined(_WINDOWS) && !defined(WIN32) && !defined(_WIN32_WCE)
#  define WIN32
#endif

/* directory delimiter for DOS support */
#ifdef WIN32
#define DIR_CHAR '\\'
#else
#define DIR_CHAR '/'
#endif

struct projFileAPI_t;

/* proj thread context */
typedef struct {
    int	    last_errno;
    int     debug_level;
    void    (*logger)(void *, int, const char *);
    void    *app_data;
    struct projFileAPI_t *fileapi;
} projCtx_t;

/* datum_type values */
#define PJD_UNKNOWN   0
#define PJD_3PARAM    1   
#define PJD_7PARAM    2   
#define PJD_GRIDSHIFT 3
#define PJD_WGS84     4   /* WGS84 (or anything considered equivelent) */

/* library errors */
#define PJD_ERR_GEOCENTRIC          -45
#define PJD_ERR_AXIS                -47
#define PJD_ERR_GRID_AREA           -48
#define PJD_ERR_CATALOG             -49

#define USE_PROJUV 

typedef struct { double u, v; } projUV;
typedef struct { double r, i; }	COMPLEX;

#ifndef PJ_LIB__
#define XY projUV
#define LP projUV
#else
typedef struct { double x, y; }     XY;
typedef struct { double lam, phi; } LP;
#endif

typedef union { double  f; int  i; char *s; } PROJVALUE;
struct PJconsts;
    
struct PJ_LIST {
	char	*id;		/* projection keyword */
	struct PJconsts	*(*proj)(struct PJconsts*);/* projection entry point */
	char 	* const *descr;	/* description text */
};
struct PJ_ELLPS {
	char	*id;	/* ellipse keyword name */
	char	*major;	/* a= value */
	char	*ell;	/* elliptical parameter */
	char	*name;	/* comments */
};
struct PJ_UNITS {
	char	*id;	/* units keyword */
	char	*to_meter;	/* multiply by value to get meters */
	char	*name;	/* comments */
};

struct PJ_DATUMS {
    char    *id;     /* datum keyword */
    char    *defn;   /* ie. "to_wgs84=..." */
    char    *ellipse_id; /* ie from ellipse table */
    char    *comments; /* EPSG code, etc */
};

struct PJ_PRIME_MERIDIANS {
    char    *id;     /* prime meridian keyword */
    char    *defn;   /* offset from greenwich in DMS format. */
};

typedef struct {
    double ll_long;      /* lower left corner coordinates (radians) */
    double ll_lat;
    double ur_long;      /* upper right corner coordinates (radians) */
    double ur_lat; 
} PJ_Region;

struct DERIVS {
    double x_l, x_p; /* derivatives of x for lambda-phi */
    double y_l, y_p; /* derivatives of y for lambda-phi */
};
    
struct FACTORS {
	struct DERIVS der;
	double h, k;	/* meridinal, parallel scales */
	double omega, thetap;	/* angular distortion, theta prime */
	double conv;	/* convergence */
	double s;		/* areal scale factor */
	double a, b;	/* max-min scale error */
	int code;		/* info as to analytics, see following */
};
#define IS_ANAL_XL_YL 01	/* derivatives of lon analytic */
#define IS_ANAL_XP_YP 02	/* derivatives of lat analytic */
#define IS_ANAL_HK	04		/* h and k analytic */
#define IS_ANAL_CONV 010	/* convergence analytic */
    /* parameter list struct */
typedef struct ARG_list {
	struct ARG_list *next;
	char used;
	char param[1]; } paralist;
	/* base projection data structure */


typedef struct PJconsts {
    projCtx_t *ctx;
	XY  (*fwd)(LP, struct PJconsts *);
	LP  (*inv)(XY, struct PJconsts *);
	void (*spc)(LP, struct PJconsts *, struct FACTORS *);
	void (*pfree)(struct PJconsts *);
	const char *descr;
	paralist *params;   /* parameter list */
	int over;   /* over-range flag */
	int geoc;   /* geocentric latitude flag */
        int is_latlong; /* proj=latlong ... not really a projection at all */
        int is_geocent; /* proj=geocent ... not really a projection at all */
	double
		a,  /* major axis or radius if es==0 */
                a_orig, /* major axis before any +proj related adjustment */
		es, /* e ^ 2 */
                es_orig, /* es before any +proj related adjustment */
		e,  /* eccentricity */
		ra, /* 1/A */
		one_es, /* 1 - e^2 */
		rone_es, /* 1/one_es */
		lam0, phi0, /* central longitude, latitude */
		x0, y0, /* easting and northing */
		k0,	/* general scaling factor */
		to_meter, fr_meter; /* cartesian scaling */
    
        int     datum_type; /* PJD_UNKNOWN/3PARAM/7PARAM/GRIDSHIFT/WGS84 */
        double  datum_params[7];
        struct _pj_gi **gridlist;
        int     gridlist_count;

        int     has_geoid_vgrids;
        struct _pj_gi **vgridlist_geoid;
        int     vgridlist_geoid_count;
        double  vto_meter, vfr_meter;

        double  from_greenwich; /* prime meridian offset (in radians) */
        double  long_wrap_center; /* 0.0 for -180 to 180, actually in radians*/
        int     is_long_wrap_set;
        char    axis[4];

        /* New Datum Shift Grid Catalogs */
        char   *catalog_name;
        struct _PJ_GridCatalog *catalog;
    
        double   datum_date;
    
        struct _pj_gi *last_before_grid;
        PJ_Region     last_before_region;
        double        last_before_date;

        struct _pj_gi *last_after_grid;
        PJ_Region     last_after_region;
        double        last_after_date;

#ifdef PROJ_PARMS__
PROJ_PARMS__
#endif /* end of optional extensions */
} PJ;

/* public API */
#include "proj_api.h"

/* Generate pj_list external or make list from include file */
#ifndef USE_PJ_LIST_H
extern struct PJ_LIST pj_list[];
#else
#define PROJ_HEAD(id, name) \
    struct PJconsts *pj_##id(struct PJconsts*); extern char * const pj_s_##id;
    
#include "pj_list.h"
#undef PROJ_HEAD
#define PROJ_HEAD(id, name) {#id, pj_##id, &pj_s_##id},
	struct PJ_LIST
pj_list[] = {
#include "pj_list.h"
		{0,     0,  0},
	};
#undef PROJ_HEAD
#endif

#ifndef PJ_ELLPS__
extern struct PJ_ELLPS pj_ellps[];
#endif

#ifndef PJ_UNITS__
extern struct PJ_UNITS pj_units[];
#endif

#ifndef PJ_DATUMS__
extern struct PJ_DATUMS pj_datums[];
extern struct PJ_PRIME_MERIDIANS pj_prime_meridians[];
#endif

#ifdef PJ_LIB__
    /* repeatative projection code */
#define PROJ_HEAD(id, name) static const char des_##id [] = name
#define ENTRYA(name) \
        C_NAMESPACE_VAR const char * const pj_s_##name = des_##name; \
	C_NAMESPACE PJ *pj_##name(PJ *P) { if (!P) { \
	if( (P = (PJ*) pj_malloc(sizeof(PJ))) != NULL) { \
        memset( P, 0, sizeof(PJ) ); \
	P->pfree = freeup; P->fwd = 0; P->inv = 0; \
	P->spc = 0; P->descr = des_##name;
#define ENTRYX } return P; } else {
#define ENTRY0(name) ENTRYA(name) ENTRYX
#define ENTRY1(name, a) ENTRYA(name) P->a = 0; ENTRYX
#define ENTRY2(name, a, b) ENTRYA(name) P->a = 0; P->b = 0; ENTRYX
#define ENDENTRY(p) } return (p); }
#define E_ERROR(err) { pj_ctx_set_errno( P->ctx, err); freeup(P); return(0); }
#define E_ERROR_0 { freeup(P); return(0); }
#define F_ERROR { pj_ctx_set_errno( P->ctx, -20); return(xy); }
#define I_ERROR { pj_ctx_set_errno( P->ctx, -20); return(lp); }
#define FORWARD(name) static XY name(LP lp, PJ *P) { XY xy = {0.0,0.0}
#define INVERSE(name) static LP name(XY xy, PJ *P) { LP lp = {0.0,0.0}
#define FREEUP static void freeup(PJ *P) {
#define SPECIAL(name) static void name(LP lp, PJ *P, struct FACTORS *fac)
#endif
#define MAX_TAB_ID 80
typedef struct { float lam, phi; } FLP;
typedef struct { int lam, phi; } ILP;

struct CTABLE {
	char id[MAX_TAB_ID]; /* ascii info */
	LP ll;      /* lower left corner coordinates */
	LP del;     /* size of cells */
	ILP lim;    /* limits of conversion matrix */
	FLP *cvs;   /* conversion matrix */
};

typedef struct _pj_gi {
    char *gridname;   /* identifying name of grid, eg "conus" or ntv2_0.gsb */
    char *filename;   /* full path to filename */
    
    const char *format; /* format of this grid, ie "ctable", "ntv1", 
                           "ntv2" or "missing". */

    int   grid_offset; /* offset in file, for delayed loading */

    struct CTABLE *ct;

    struct _pj_gi *next;
    struct _pj_gi *child;
} PJ_GRIDINFO;

typedef struct {
    PJ_Region region;
    int  priority; /* higher used before lower */
    double date; /* year.fraction */
    char *definition; /* usually the gridname */

    PJ_GRIDINFO  *gridinfo;
    int available; /* 0=unknown, 1=true, -1=false */
} PJ_GridCatalogEntry;

typedef struct _PJ_GridCatalog {
    char *catalog_name;

    PJ_Region region; /* maximum extent of catalog data */

    int entry_count;
    PJ_GridCatalogEntry *entries;

    struct _PJ_GridCatalog *next;
} PJ_GridCatalog;


/* procedure prototypes */
double dmstor(const char *, char **);
double dmstor_ctx(projCtx ctx, const char *, char **);
void set_rtodms(int, int);
char *rtodms(char *, double, int, int);
double adjlon(double);
double aacos(projCtx,double), aasin(projCtx,double), asqrt(double), aatan2(double, double);
PROJVALUE pj_param(projCtx ctx, paralist *, const char *);
paralist *pj_mkparam(char *);
int pj_ell_set(projCtx ctx, paralist *, double *, double *);
int pj_datum_set(projCtx,paralist *, PJ *);
int pj_prime_meridian_set(paralist *, PJ *);
int pj_angular_units_set(paralist *, PJ *);

paralist *pj_clone_paralist( const paralist* );
paralist*pj_search_initcache( const char *filekey );
void pj_insert_initcache( const char *filekey, const paralist *list);

double *pj_enfn(double);
double pj_mlfn(double, double, double, double *);
double pj_inv_mlfn(projCtx, double, double, double *);
double pj_qsfn(double, double, double);
double pj_tsfn(double, double, double);
double pj_msfn(double, double, double);
double pj_phi2(projCtx, double, double);
double pj_qsfn_(double, PJ *);
double *pj_authset(double);
double pj_authlat(double, double *);
COMPLEX pj_zpoly1(COMPLEX, COMPLEX *, int);
COMPLEX pj_zpolyd1(COMPLEX, COMPLEX *, int, COMPLEX *);

int pj_deriv(LP, double, PJ *, struct DERIVS *);
int pj_factors(LP, PJ *, double, struct FACTORS *);

struct PW_COEF {/* row coefficient structure */
    int m;		/* number of c coefficients (=0 for none) */
    double *c;	/* power coefficients */
};
 
/* Approximation structures and procedures */
typedef struct {	/* Chebyshev or Power series structure */
	projUV a, b;		/* power series range for evaluation */
					/* or Chebyshev argument shift/scaling */
	struct PW_COEF *cu, *cv;
	int mu, mv;		/* maximum cu and cv index (+1 for count) */
	int power;		/* != 0 if power series, else Chebyshev */
} Tseries;
Tseries *mk_cheby(projUV, projUV, double, projUV *, projUV (*)(projUV), int, int, int);
projUV bpseval(projUV, Tseries *);
projUV bcheval(projUV, Tseries *);
projUV biveval(projUV, Tseries *);
void *vector1(int, int);
void **vector2(int, int, int);
void freev2(void **v, int nrows);
int bchgen(projUV, projUV, int, int, projUV **, projUV(*)(projUV));
int bch2bps(projUV, projUV, projUV **, int, int);
/* nadcon related protos */
LP nad_intr(LP, struct CTABLE *);
LP nad_cvt(LP, int, struct CTABLE *);
struct CTABLE *nad_init(projCtx ctx, char *);
struct CTABLE *nad_ctable_init( projCtx ctx, PAFile fid );
int nad_ctable_load( projCtx ctx, struct CTABLE *, PAFile fid );
struct CTABLE *nad_ctable2_init( projCtx ctx, PAFile fid );
int nad_ctable2_load( projCtx ctx, struct CTABLE *, PAFile fid );
void nad_free(struct CTABLE *);

/* higher level handling of datum grid shift files */

int pj_apply_vgridshift( PJ *defn, const char *listname,
                         PJ_GRIDINFO ***gridlist_p, 
                         int *gridlist_count_p,
                         int inverse, 
                         long point_count, int point_offset,
                         double *x, double *y, double *z );
int pj_apply_gridshift_2( PJ *defn, int inverse, 
                          long point_count, int point_offset,
                          double *x, double *y, double *z );
int pj_apply_gridshift_3( projCtx ctx, 
                          PJ_GRIDINFO **gridlist, int gridlist_count,
                          int inverse, long point_count, int point_offset,
                          double *x, double *y, double *z );

PJ_GRIDINFO **pj_gridlist_from_nadgrids( projCtx, const char *, int * );
void pj_deallocate_grids();

PJ_GRIDINFO *pj_gridinfo_init( projCtx, const char * );
int pj_gridinfo_load( projCtx, PJ_GRIDINFO * );
void pj_gridinfo_free( projCtx, PJ_GRIDINFO * );

PJ_GridCatalog *pj_gc_findcatalog( projCtx, const char * );
PJ_GridCatalog *pj_gc_readcatalog( projCtx, const char * );
void pj_gc_unloadall( projCtx );
int pj_gc_apply_gridshift( PJ *defn, int inverse, 
                           long point_count, int point_offset,
                           double *x, double *y, double *z );
int pj_gc_apply_gridshift( PJ *defn, int inverse, 
                           long point_count, int point_offset,
                           double *x, double *y, double *z );

PJ_GRIDINFO *pj_gc_findgrid( projCtx ctx, 
                             PJ_GridCatalog *catalog, int after, 
                             LP location, double date,
                             PJ_Region *optional_region,
                             double *grid_date );

double pj_gc_parsedate( projCtx, const char * );

void *proj_mdist_ini(double);
double proj_mdist(double, double, double, const void *);
double proj_inv_mdist(projCtx ctx, double, const void *);
void *pj_gauss_ini(double, double, double *,double *);
LP pj_gauss(projCtx, LP, const void *);
LP pj_inv_gauss(projCtx, LP, const void *);

extern char const pj_release[];

struct PJ_ELLPS *pj_get_ellps_ref( void );
struct PJ_DATUMS *pj_get_datums_ref( void );
struct PJ_UNITS *pj_get_units_ref( void );
struct PJ_LIST  *pj_get_list_ref( void );
struct PJ_PRIME_MERIDIANS  *pj_get_prime_meridians_ref( void );

double pj_atof( const char* nptr );
double pj_strtod( const char *nptr, char **endptr );

#ifdef __cplusplus
}
#endif

#endif /* end of basic projections header */