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/*
* Copyright 2004,2005 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdlib.h>
#include <axutil_rand.h>
#include <axutil_string.h>
#include <platforms/axutil_platform_auto_sense.h>
#define AXIS2_RAND_MAX 32768
AXIS2_EXTERN int AXIS2_CALL
axutil_rand(
unsigned int *seedp)
{
*seedp = *seedp * 1103515245 + 12345;
return ((unsigned)(*seedp / (2 * AXIS2_RAND_MAX)) % AXIS2_RAND_MAX);
}
AXIS2_EXTERN int AXIS2_CALL
axutil_rand_with_range(
unsigned int *seedp,
int start,
int end)
{
int rand = -1;
float range = 0.0;
if(start < 0 || end <= 0)
return -1;
if(start >= AXIS2_RAND_MAX || end > AXIS2_RAND_MAX)
return -1;
if(end <= start)
return -1;
range = (float)(end - start);
rand = axutil_rand(seedp);
rand = start + (int)(range * rand / (AXIS2_RAND_MAX + 1.0));
return rand;
}
AXIS2_EXTERN unsigned int AXIS2_CALL
axutil_rand_get_seed_value_based_on_time(
const axutil_env_t * env)
{
axutil_date_time_t *date = axutil_date_time_create(env);
unsigned int rand_var = axutil_date_time_get_year(date, env);
rand_var += axutil_date_time_get_month(date, env);
rand_var += axutil_date_time_get_day(date, env);
rand_var += axutil_date_time_get_hour(date, env);
rand_var += axutil_date_time_get_minute(date, env);
rand_var += axutil_date_time_get_second(date, env);
axutil_date_time_free(date, env);
return rand_var;
}
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