| |
| /* |
| * 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_date(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; |
| } |