Root/
| Source at commit 1308 created 12 years 8 months ago. By meklort, Add a few placeholders for file io | |
|---|---|
| 1 | #include <stdint.h>␊ |
| 2 | ␊ |
| 3 | extern void __divide_error();␊ |
| 4 | uint32_t __udivmodsi4(uint32_t num, uint32_t den, uint32_t * rem_p)␊ |
| 5 | {␊ |
| 6 | ␉uint32_t quot = 0, qbit = 1;␊ |
| 7 | ␊ |
| 8 | ␉if (den == 0) {␊ |
| 9 | ␉␉__divide_error();␊ |
| 10 | ␉␉return 0;␉/* If trap returns... */␊ |
| 11 | ␉}␊ |
| 12 | ␊ |
| 13 | ␉/* Left-justify denominator and count shift */␊ |
| 14 | ␉while ((int32_t) den >= 0) {␊ |
| 15 | ␉␉den <<= 1;␊ |
| 16 | ␉␉qbit <<= 1;␊ |
| 17 | ␉}␊ |
| 18 | ␊ |
| 19 | ␉while (qbit) {␊ |
| 20 | ␉␉if (den <= num) {␊ |
| 21 | ␉␉␉num -= den;␊ |
| 22 | ␉␉␉quot += qbit;␊ |
| 23 | ␉␉}␊ |
| 24 | ␉␉den >>= 1;␊ |
| 25 | ␉␉qbit >>= 1;␊ |
| 26 | ␉}␊ |
| 27 | ␊ |
| 28 | ␉if (rem_p)␊ |
| 29 | ␉␉*rem_p = num;␊ |
| 30 | ␊ |
| 31 | ␉return quot;␊ |
| 32 | }␊ |
| 33 | |
