8f34c2760d
project:cfg:BoardConfig_IPC: Added fastboot BoardConfig file and firmware post-scripts, distinguishing between the BoardConfigs for Luckfox Pico Pro and Luckfox Pico Max. project:app: Added fastboot_client and rk_smart_door for quick boot applications; updated rkipc app to adapt to the latest media library. media:samples: Added more usage examples. media:rockit: Fixed bugs; removed support for retrieving data frames from VPSS. media:isp: Updated rkaiq library and related tools to support connection to RKISP_Tuner. sysdrv:Makefile: Added support for compiling drv_ko on Luckfox Pico Ultra W using Ubuntu; added support for custom root filesystem. sysdrv:tools:board: Updated Buildroot optional mirror sources, updated some software versions, and stored device tree files and configuration files that undergo multiple modifications for U-Boot and kernel separately. sysdrv:source:mcu: Used RISC-V MCU SDK with RT-Thread system, mainly for initializing camera AE during quick boot. sysdrv:source:uboot: Added support for fastboot; added high baud rate DDR bin for serial firmware upgrades. sysdrv:source:kernel: Upgraded to version 5.10.160; increased NPU frequency for RV1106G3; added support for fastboot. Signed-off-by: luckfox-eng29 <eng29@luckfox.com>
44 lines
742 B
C
44 lines
742 B
C
/*
|
|
* Copyright (c) 2006-2018, RT-Thread Development Team
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Change Logs:
|
|
* Date Author Notes
|
|
*/
|
|
#include <stdlib.h>
|
|
#include <stdint.h>
|
|
#include <sys/types.h>
|
|
|
|
static unsigned int _seed=1;
|
|
|
|
/* Knuth's TAOCP section 3.6 */
|
|
#define M ((1U<<31) -1)
|
|
#define A 48271
|
|
#define Q 44488 // M/A
|
|
#define R 3399 // M%A; R < Q !!!
|
|
|
|
int rand_r(unsigned int* seed)
|
|
{ int32_t X;
|
|
|
|
X = *seed;
|
|
X = A*(X%Q) - R * (int32_t) (X/Q);
|
|
if (X < 0)
|
|
X += M;
|
|
|
|
*seed = X;
|
|
return X;
|
|
}
|
|
|
|
int rand(void) {
|
|
return rand_r(&_seed);
|
|
}
|
|
|
|
void srand(unsigned int i)
|
|
{
|
|
_seed=i;
|
|
}
|
|
|
|
int random(void) __attribute__((alias("rand")));
|
|
void srandom(unsigned int i) __attribute__((alias("srand")));
|