/*
	file automatically generated by make_test_files.pl
	Fri Jul  3 11:37:50 2026
*/

/*****************************************************************************
 *                                                                           *
 *          UNU.RAN -- Universal Non-Uniform Random number generator         *
 *                                                                           *
 *****************************************************************************/
    
/**
 ** Tests for HIST
 **/
    
/*---------------------------------------------------------------------------*/
#include "testunuran.h"

#ifdef UNUR_URNG_DEFAULT_RNGSTREAM
#include <RngStream.h>
#endif
/*---------------------------------------------------------------------------*/

/*---------------------------------------------------------------------------*/
/* global variables                                                          */

static FILE *TESTLOG;               /* test log file                         */
static FILE *UNURANLOG;             /* unuran log file                       */

static int test_ok = TRUE;          /* all tests ok (boolean)                */
static int fullcheck = FALSE;       /* whether all checks are performed      */ 

static TIMER watch;                 /* stop watch                            */

/*---------------------------------------------------------------------------*/

void run_verify_generator( FILE *LOG, int line, UNUR_PAR *par );

int unur_hist_set_verify( UNUR_PAR *par, int verify);


/*---------------------------------------------------------------------------*/

void test_new (void);
void test_set (void);
void test_get (void);
void test_chg (void);
void test_init (void);
void test_reinit (void);
void test_sample (void);
void test_validate (void);
void test_special(void);

/*---------------------------------------------------------------------------*/



/* prototypes */

#define COMPARE_SAMPLE_SIZE   (10000)
#define VIOLATE_SAMPLE_SIZE   (20)

UNUR_DISTR *get_distr_with_data( void );
UNUR_DISTR *get_distr_with_data2( void );




/*---------------------------------------------------------------------------*/

#ifndef CHI2_FAILURES_TOLERATED
#  define CHI2_FAILURES_TOLERATED DEFAULT_CHI2_FAILURES_TOLERATED
#endif

/*---------------------------------------------------------------------------*/
/* [verbatim] */



/*---------------------------------------------------------------------------*/

UNUR_DISTR *get_distr_with_data( void )
{
#define HIST_SIZE 20
  double hist[HIST_SIZE];
  UNUR_DISTR *distr;
  int i;

  unur_urng_fish_reset(NULL);

  for (i=0; i<HIST_SIZE; i++)
    hist[i] = (2.*i)/((double)HIST_SIZE) + unur_urng_fish(NULL);

  distr = unur_distr_cemp_new();
  unur_distr_cemp_set_hist(distr,hist,HIST_SIZE,-2.5,7.5);

  return distr;

#undef HIST_SIZE
} /* end of get_distr_with_data() */

/*---------------------------------------------------------------------------*/

UNUR_DISTR *get_distr_with_data2( void )
{
#define HIST_SIZE 20
  double hist[HIST_SIZE];
  UNUR_DISTR *distr;
  int i;

  unur_urng_fish_reset(NULL);

  for (i=0; i<HIST_SIZE; i++)
    hist[i] = (2.*i)/((double)HIST_SIZE) + unur_urng_fish(NULL);

  distr = unur_distr_cemp_new();
  unur_distr_cemp_set_hist_prob(distr,hist,HIST_SIZE);
  unur_distr_cemp_set_hist_domain(distr,-2.5,7.5);

  return distr;

#undef HIST_SIZE
} /* end of get_distr_with_data2() */

/*---------------------------------------------------------------------------*/

/*---------------------------------------------------------------------------*/
/* [new] */

void test_new (void)
{
        int n_tests_failed;          /* number of failed tests */

	/* start test */
	printf("[new "); fflush(stdout);
	fprintf(TESTLOG,"\n[new]\n");

	/* reset counter */
	n_tests_failed = 0;

	/* set stop watch */
	stopwatch_lap(&watch);
  
{ /* invalid NULL ptr */
UNUR_DISTR *distr = NULL;
   distr = NULL; 


unur_reset_errno();
n_tests_failed += (check_expected_NULL(TESTLOG,28,(unur_hist_new( distr )))==UNUR_SUCCESS)?0:1;
n_tests_failed += (check_errorcode(TESTLOG,28,UNUR_ERR_NULL)==UNUR_SUCCESS)?0:1;
unur_distr_free(distr);
}

{ /* invalid distribution type */
UNUR_DISTR *distr = NULL;
   distr = unur_distr_cont_new(); 


unur_reset_errno();
n_tests_failed += (check_expected_NULL(TESTLOG,35,(unur_hist_new( distr )))==UNUR_SUCCESS)?0:1;
n_tests_failed += (check_errorcode(TESTLOG,35,UNUR_ERR_DISTR_INVALID)==UNUR_SUCCESS)?0:1;
unur_distr_free(distr);
}

{ /* data missing in distribution object */
UNUR_DISTR *distr = NULL;
   distr = unur_distr_cemp_new();   /* no data given */ 


unur_reset_errno();
n_tests_failed += (check_expected_NULL(TESTLOG,42,(unur_hist_new( distr )))==UNUR_SUCCESS)?0:1;
n_tests_failed += (check_errorcode(TESTLOG,42,UNUR_ERR_DISTR_REQUIRED)==UNUR_SUCCESS)?0:1;
unur_distr_free(distr);
}

{ /* data missing in distribution object */
UNUR_DISTR *distr = NULL;
   double hist[] = {0.1,0.2,0.3,0.4,0.5,0.4,0.3,0.2,0.1};
   distr = unur_distr_cemp_new();
   unur_distr_cemp_set_hist_prob(distr,hist,9); 


unur_reset_errno();
n_tests_failed += (check_expected_NULL(TESTLOG,51,(unur_hist_new( distr )))==UNUR_SUCCESS)?0:1;
n_tests_failed += (check_errorcode(TESTLOG,51,UNUR_ERR_DISTR_REQUIRED)==UNUR_SUCCESS)?0:1;
unur_distr_free(distr);
}


	/* timing */
	stopwatch_print(TESTLOG,"\n<*>time = %.3f ms\n\n", stopwatch_lap(&watch));

	/* test finished */
	test_ok &= (n_tests_failed) ? 0 : 1;
	(n_tests_failed) ? printf(" ==> failed] ") : printf(" ==> ok] ");

} /* end of test_new() */

/*---------------------------------------------------------------------------*/
/* [init] */

void test_init (void)
{
        int n_tests_failed;          /* number of failed tests */

	/* start test */
	printf("[init "); fflush(stdout);
	fprintf(TESTLOG,"\n[init]\n");

	/* reset counter */
	n_tests_failed = 0;

	/* set stop watch */
	stopwatch_lap(&watch);
  
{ /* run init */
UNUR_DISTR *distr = NULL;
UNUR_PAR   *par = NULL;
UNUR_GEN   *gen = NULL;
   distr = get_distr_with_data();
   par = unur_hist_new(distr);
   gen = unur_init( par ); 
abort_if_NULL(TESTLOG, 72,    gen );


unur_reset_errno();
;
n_tests_failed += (check_errorcode(TESTLOG,76,0x0u)==UNUR_SUCCESS)?0:1;
unur_distr_free(distr);
unur_free(gen);
}


	/* timing */
	stopwatch_print(TESTLOG,"\n<*>time = %.3f ms\n\n", stopwatch_lap(&watch));

	/* test finished */
	test_ok &= (n_tests_failed) ? 0 : 1;
	(n_tests_failed) ? printf(" ==> failed] ") : printf(" ==> ok] ");

} /* end of test_init() */

/*---------------------------------------------------------------------------*/
/* [reinit] */

void test_reinit (void)
{
        int n_tests_failed;          /* number of failed tests */

	/* start test */
	printf("[reinit "); fflush(stdout);
	fprintf(TESTLOG,"\n[reinit]\n");

	/* reset counter */
	n_tests_failed = 0;

	/* set stop watch */
	stopwatch_lap(&watch);
  

	/* timing */
	stopwatch_print(TESTLOG,"\n<*>time = %.3f ms\n\n", stopwatch_lap(&watch));

	/* test finished */
	test_ok &= (n_tests_failed) ? 0 : 1;
	(n_tests_failed) ? printf(" ==> failed] ") : printf(" ==> ok] ");

} /* end of test_reinit() */

/*---------------------------------------------------------------------------*/
/* [sample] */

void test_sample (void)
{
        int n_tests_failed;          /* number of failed tests */

	/* start test */
	printf("[sample "); fflush(stdout);
	fprintf(TESTLOG,"\n[sample]\n");

	/* reset counter */
	n_tests_failed = 0;

	/* set stop watch */
	stopwatch_lap(&watch);
  
{ /* compare variants */
UNUR_PAR   *par = NULL;
UNUR_GEN   *gen = NULL;
   UNUR_DISTR *distr1 = get_distr_with_data();
   UNUR_DISTR *distr2 = get_distr_with_data2();
   par = unur_hist_new(distr1);
   gen = unur_init( par ); 
abort_if_NULL(TESTLOG, 101,    gen );


unur_reset_errno();
/* default generator object */;
n_tests_failed += (compare_sequence_gen_start(TESTLOG,105,gen,COMPARE_SAMPLE_SIZE)==UNUR_SUCCESS)?0:1;

unur_reset_errno();
/* variant */
unur_free(gen);
par = unur_hist_new(distr2);
gen = unur_init(par);
n_tests_failed += (compare_sequence_gen(TESTLOG,111,gen,COMPARE_SAMPLE_SIZE)==UNUR_SUCCESS)?0:1;
unur_distr_free(distr1);
unur_distr_free(distr2);
unur_free(gen);
}

{ /* compare variant */
UNUR_DISTR *distr = NULL;
UNUR_PAR   *par = NULL;
UNUR_GEN   *gen = NULL;
   double hist[] = {0.1,0.2,0.3,0.4,0.5,0.4,0.3,0.2,0.1};
   double bins[] = {1.,2.,3.,4.,5.,6.,7.,8.,9.,10.};
   distr = unur_distr_cemp_new();
   unur_distr_cemp_set_hist_prob(distr,hist,9);
   unur_distr_cemp_set_hist_domain(distr,1.,10.);
   par = unur_hist_new(distr);
   gen = unur_init( par ); 
abort_if_NULL(TESTLOG, 124,    gen );


unur_reset_errno();
/* default generator object */;
n_tests_failed += (compare_sequence_gen_start(TESTLOG,128,gen,COMPARE_SAMPLE_SIZE)==UNUR_SUCCESS)?0:1;

unur_reset_errno();
/* variant */
unur_free(gen);
unur_distr_free(distr);
distr = unur_distr_cemp_new();
unur_distr_cemp_set_hist_prob(distr,hist,9);
unur_distr_cemp_set_hist_bins(distr,bins,10);
unur_distr_cemp_set_hist_domain(distr,1.,100.);
par = unur_hist_new(distr);
gen = unur_init(par);
n_tests_failed += (compare_sequence_gen(TESTLOG,139,gen,COMPARE_SAMPLE_SIZE)==UNUR_SUCCESS)?0:1;
unur_distr_free(distr);
unur_free(gen);
}

{ /* compare clone */
UNUR_DISTR *distr = NULL;
UNUR_PAR   *par = NULL;
UNUR_GEN   *gen = NULL;
   UNUR_GEN *clone;
   double hist[] = {0.1,0.2,0.3,0.4,0.5,0.4,0.3,0.2,0.1};
   double bins[] = {1.,2.,3.,4.,5.,6.,7.,8.,9.,10.};
   distr = unur_distr_cemp_new();
   unur_distr_cemp_set_hist_prob(distr,hist,9);
   unur_distr_cemp_set_hist_bins(distr,bins,10);
   par = unur_hist_new(distr);
   gen = unur_init( par ); 
abort_if_NULL(TESTLOG, 150,    gen );


unur_reset_errno();
/* default generator object */;
n_tests_failed += (compare_sequence_gen_start(TESTLOG,154,gen,COMPARE_SAMPLE_SIZE)==UNUR_SUCCESS)?0:1;

unur_reset_errno();
/* clone */
clone = unur_gen_clone(gen);
unur_free(gen);
gen = clone;
n_tests_failed += (compare_sequence_gen(TESTLOG,160,gen,COMPARE_SAMPLE_SIZE)==UNUR_SUCCESS)?0:1;
unur_distr_free(distr);
unur_free(gen);
}

{ /* compare clone */
UNUR_DISTR *distr = NULL;
UNUR_PAR   *par = NULL;
UNUR_GEN   *gen = NULL;
   UNUR_GEN *clone;
   distr = get_distr_with_data();
   par = unur_hist_new(distr);
   gen = unur_init( par ); 
abort_if_NULL(TESTLOG, 167,    gen );


unur_reset_errno();
/* default generator object */;
n_tests_failed += (compare_sequence_gen_start(TESTLOG,171,gen,COMPARE_SAMPLE_SIZE)==UNUR_SUCCESS)?0:1;

unur_reset_errno();
/* clone */
clone = unur_gen_clone(gen);
unur_free(gen);
gen = clone;
n_tests_failed += (compare_sequence_gen(TESTLOG,177,gen,COMPARE_SAMPLE_SIZE)==UNUR_SUCCESS)?0:1;
unur_distr_free(distr);
unur_free(gen);
}

{ /* compare stringparser */
UNUR_DISTR *distr = NULL;
UNUR_PAR   *par = NULL;
UNUR_GEN   *gen = NULL;
   double hist[] = {0.1,0.2,0.3,0.4,0.5,0.4,0.3,0.2,0.1};
   distr = unur_distr_cemp_new();
   unur_distr_cemp_set_hist_prob(distr,hist,9);
   unur_distr_cemp_set_hist_domain(distr,1.,10.);
   par = unur_hist_new(distr);
   gen = unur_init( par ); 
abort_if_NULL(TESTLOG, 186,    gen );


unur_reset_errno();
/* default generator object */;
n_tests_failed += (compare_sequence_gen_start(TESTLOG,190,gen,COMPARE_SAMPLE_SIZE)==UNUR_SUCCESS)?0:1;

unur_reset_errno();
/* string API */
unur_free(gen);
gen = unur_str2gen("cemp; hist_prob=(0.1,0.2,0.3,0.4,0.5,0.4,0.3,0.2,0.1); \
                    hist_domain=(1.,10.) & method = hist");
n_tests_failed += (compare_sequence_gen(TESTLOG,196,gen,COMPARE_SAMPLE_SIZE)==UNUR_SUCCESS)?0:1;

unur_reset_errno();
/* string API */
unur_free(gen);
gen = unur_str2gen("cemp; hist_prob=(0.1,0.2,0.3,0.4,0.5,0.4,0.3,0.2,0.1); \
                    hist_bins=(1.,2.,3.,4.,5.,6.,7.,8.,9.,10.) & method = hist");
n_tests_failed += (compare_sequence_gen(TESTLOG,202,gen,COMPARE_SAMPLE_SIZE)==UNUR_SUCCESS)?0:1;
unur_distr_free(distr);
unur_free(gen);
}


	/* timing */
	stopwatch_print(TESTLOG,"\n<*>time = %.3f ms\n\n", stopwatch_lap(&watch));

	/* test finished */
	test_ok &= (n_tests_failed) ? 0 : 1;
	(n_tests_failed) ? printf(" ==> failed] ") : printf(" ==> ok] ");

} /* end of test_sample() */

/*---------------------------------------------------------------------------*/
/* [validate] */

/*---------------------------------------------------------------------------*/

/* [validate] */

void test_validate (void)
{
	/* suppress GCC compiler warning */
GCC_DIAG_OFF(unused-variable)

	UNUR_DISTR *distr[2];
	UNUR_PAR *par;
	UNUR_GEN *gen;
	double *darray;
	double fpm[10];
	int n_tests_failed;
	int rcode;

	/* start test */
	printf("[validate "); fflush(stdout);
	fprintf(TESTLOG,"\n[validate]\n");

	/* reset counter */
	n_tests_failed = 0;

	/* set stop watch */
	stopwatch_lap(&watch);


/* distributions: 2 */
{
{ double pv[1000];
  UNUR_DISTR *normal_dist;
  int i;
  double xmin, xmax;
  double fxmin, fxmax;
  /* xmin = -5.; */
  fxmin = 0.;
  normal_dist = unur_distr_normal(NULL,0);
  for (i=0; i<1000; i++) {
    xmax = -5. + i/100.;
    fxmax = unur_distr_cont_eval_cdf(xmax,normal_dist);
    pv[i] = fxmax - fxmin;
    /* xmin = xmax; */
    fxmin = fxmax; }
  unur_distr_free(normal_dist);
  distr[0] = unur_distr_cemp_new();
  unur_distr_cemp_set_hist(distr[0],pv,1000,-5.,5.); }
}

{
{ double pv[1000];
  double bins[1001];
  UNUR_DISTR *normal_dist;
  int i;
  double xmin, xmax;
  double fxmin, fxmax;
  normal_dist = unur_distr_normal(NULL,0);
  bins[500] = 0.;
  for (i=501; i<=1000; i++)
	bins[i] = bins[i-1] + (i-500)/25000.;
  for (i=499; i>=0; i--)
	bins[i] = bins[i+1] + (i-500)/25000.;
  xmin = bins[0];
  fxmin = unur_distr_cont_eval_cdf(xmin,normal_dist);
  pv[0] = unur_distr_cont_eval_cdf(bins[0],normal_dist);
  for (i=0; i<1000; i++) {
    xmax = bins[i+1];
    fxmax = unur_distr_cont_eval_cdf(xmax,normal_dist);
    pv[i] = fxmax - fxmin;
    xmin = xmax;
    fxmin = fxmax; }
  unur_distr_free(normal_dist);
  distr[1] = unur_distr_cemp_new();
  unur_distr_cemp_set_hist_prob(distr[1],pv,1000);
  unur_distr_cemp_set_hist_bins(distr[1],bins,1001); }
}

	/* timing */
	stopwatch_print(TESTLOG,"\n<*>setup time = %.3f ms\n", stopwatch_lap(&watch));

	printf("\n(chi^2) "); fflush(stdout);

/* chi^2 tests: 2 */

	unur_set_default_debug(~UNUR_DEBUG_SAMPLE);
	fprintf( TESTLOG,"\nChi^2 Test:\n");

/* distribution [0] */

	if(TRUE) {
	unur_reset_errno();
	do {
	UNUR_DISTR *distr_localcopy = unur_distr_clone(distr[0]);
par = unur_hist_new(distr_localcopy);
	gen = unur_init(par);
	rcode = run_validate_chi2(TESTLOG,0,gen,distr[0],'+');
	n_tests_failed += (rcode==UNUR_SUCCESS)?0:1;
	n_tests_failed += (rcode==UNUR_FAILURE)?1000:0;
	unur_free(gen);
	unur_distr_free(distr_localcopy);
	} while (0);
	}

/* distribution [1] */

	if(TRUE) {
	unur_reset_errno();
	do {
	UNUR_DISTR *distr_localcopy = unur_distr_clone(distr[1]);
par = unur_hist_new(distr_localcopy);
	gen = unur_init(par);
	rcode = run_validate_chi2(TESTLOG,0,gen,distr[1],'+');
	n_tests_failed += (rcode==UNUR_SUCCESS)?0:1;
	n_tests_failed += (rcode==UNUR_FAILURE)?1000:0;
	unur_free(gen);
	unur_distr_free(distr_localcopy);
	} while (0);
	}

	/* timing */
	stopwatch_print(TESTLOG,"\n<*>time = %.0f ms\n", stopwatch_lap(&watch));


/* free distributions */
	unur_distr_free(distr[0]);
	unur_distr_free(distr[1]);

	/* test finished */
	test_ok &= (n_tests_failed>CHI2_FAILURES_TOLERATED) ? 0 : 1;
	/* we accept CHI2_FAILURES_TOLERATED failures */
	(n_tests_failed>CHI2_FAILURES_TOLERATED) ? printf(" ==> failed] ") : printf(" ==> ok] ");

} /* end of test_validate */

/* enable GCC compiler warning */
GCC_DIAG_ON(unused-variable)


/*---------------------------------------------------------------------------*/
/* run generator in verifying mode */

void run_verify_generator( FILE *LOG, int line, UNUR_PAR *par )
{
	UNUR_GEN *gen;
	int i;

	/* switch to verifying mode */
	unur_hist_set_verify(par,1);

	/* initialize generator */
	gen = unur_init( par ); abort_if_NULL(LOG, line, gen);

	/* run generator */
	for (i=0; i<VIOLATE_SAMPLE_SIZE; i++)
		unur_sample_cont(gen);

	/* destroy generator */
	unur_free(gen); 

} /* end of run_verify_generator() */

int unur_hist_set_verify(UNUR_PAR *par ATTRIBUTE__UNUSED, int verify ATTRIBUTE__UNUSED) {return 0;}

/*---------------------------------------------------------------------------*/

int main(void)
{ 
        unsigned long seed;
	char *str_seed, *str_tail;

	/* start stop watch */
	stopwatch_init();
	stopwatch_start(&watch);

        /* open log file for unuran and set output stream for unuran messages */
        UNURANLOG = fopen( "t_hist_unuran.log","w" );
        abort_if_NULL( stderr,-1, UNURANLOG );
        unur_set_stream( UNURANLOG );

        /* open log file for testing */
	TESTLOG = fopen( "t_hist_test.log","w" );
	abort_if_NULL( stderr,-1, TESTLOG );

        /* seed for uniform generators */

	/* seed set by environment */
	str_seed = getenv("SEED");

	if (str_seed != NULL) {
	    seed = strtol(str_seed, &str_tail, 10);
	    if (seed == 0u) 
		seed = 364337;
	}
	else {
#ifdef SEED
	    seed = SEED;
#else
	    seed = 364337;
#endif
	}

        /* seed build-in uniform generators */
        unur_urng_MRG31k3p_seed(NULL,seed);
        unur_urng_fish_seed(NULL,seed);
	unur_urng_mstd_seed(NULL,seed);

	/* seed uniform random number generator */
#ifdef UNUR_URNG_UNURAN
#  ifdef UNUR_URNG_DEFAULT_RNGSTREAM
	{
	        unsigned long sa[6];
	        int i;
	        for (i=0; i<6; i++) sa[i] = seed;
                RngStream_SetPackageSeed(sa);
        }
#  else
	if (unur_urng_seed(NULL,seed) != UNUR_SUCCESS) {
	        fprintf(stderr,"WARNING: Seed could not be set at random\n");
                seed = ~0u;
	}
#  endif  /* UNUR_URNG_DEFAULT_RNGSTREAM */
#endif  /* UNUR_URNG_UNURAN */
 
	/* set default debugging flag */
	unur_set_default_debug(UNUR_DEBUG_ALL);

        /* detect required check mode */
        fullcheck = (getenv("UNURANFULLCHECK")==NULL) ? FALSE : TRUE;

	/* write header into log file */
        print_test_log_header( TESTLOG, seed, fullcheck );

	/* set timer for sending SIGALRM signal */
	set_alarm(TESTLOG);

	/* start test */
	printf("hist: ");

	/* run tests */
test_new();
test_init();
test_reinit();
test_sample();
test_validate();


	/* test finished */
	printf("\n");  fflush(stdout);

	/* close log files */
	fprintf(TESTLOG,"\n====================================================\n\n");
	if (test_ok)
		fprintf(TESTLOG,"All tests PASSED.\n");
	else
		fprintf(TESTLOG,"Test(s) FAILED.\n");

	/* timing */
	stopwatch_print(TESTLOG,"\n<*>total time = %.0f ms\n\n", stopwatch_stop(&watch));

	fclose(UNURANLOG);
	fclose(TESTLOG);

	/* free memory */
	compare_free_memory();
	unur_urng_free(unur_get_default_urng());
	unur_urng_free(unur_get_default_urng_aux());

	/* exit */
	exit( (test_ok) ? EXIT_SUCCESS : EXIT_FAILURE );

} /* end of main */

