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de7bad9245
2、【创建】Eclipse工程，并支持IAR插件调试 3、【创建】Keil工程，位于/RVMDK目录下 4、【创建】IAR工程，位于/EWARM目录下 5、【添加】RT-Thread1.1.1操作系统支持 6、【添加】LED1、LED2系统运行指示灯 7、【修改】Readdme.md文件 Signed-off-by: armink <armink.ztl@gmail.com>
50 lines
888 B
C
50 lines
888 B
C
/*
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* File : __umodsi3.c
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2006, RT-Thread Develop Team
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://openlab.rt-thread.com/license/LICENSE
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*
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* Change Logs:
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* Date Author Notes
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* 2006-10-09 Bernard the first version for i386
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*/
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#include <rtthread.h>
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typedef rt_uint32_t uint32_t;
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typedef rt_int32_t int32_t;
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uint32_t __umodsi3(uint32_t num, uint32_t den)
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{
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register uint32_t quot = 0, qbit = 1;
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if (den == 0)
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{
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asm volatile ("int $0");
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return 0; /* if trap returns... */
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}
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/* left-justify denominator and count shift */
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while ((int32_t) den >= 0)
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{
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den <<= 1;
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qbit <<= 1;
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}
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while (qbit)
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{
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if (den <= num)
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{
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num -= den;
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quot += qbit;
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}
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den >>= 1;
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qbit >>= 1;
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}
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return num;
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}
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