| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #include <linux/types.h> |
| 2 | #include <linux/errno.h> |
| 3 | #include <asm/uaccess.h> |
| 4 | |
| 5 | #include "soft-fp.h" |
| 6 | #include "double.h" |
| 7 | |
| 8 | int |
| 9 | fsqrt(void *frD, void *frB) |
| 10 | { |
| 11 | FP_DECL_D(B); |
| 12 | FP_DECL_D(R); |
| 13 | int ret = 0; |
| 14 | |
| 15 | #ifdef DEBUG |
| 16 | printk("%s: %p %p %p %p\n", __FUNCTION__, frD, frB); |
| 17 | #endif |
| 18 | |
| 19 | __FP_UNPACK_D(B, frB); |
| 20 | |
| 21 | #ifdef DEBUG |
| 22 | printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c); |
| 23 | #endif |
| 24 | |
| 25 | if (B_s && B_c != FP_CLS_ZERO) |
| 26 | ret |= EFLAG_VXSQRT; |
| 27 | if (B_c == FP_CLS_NAN) |
| 28 | ret |= EFLAG_VXSNAN; |
| 29 | |
| 30 | FP_SQRT_D(R, B); |
| 31 | |
| 32 | #ifdef DEBUG |
| 33 | printk("R: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c); |
| 34 | #endif |
| 35 | |
| 36 | return (ret | __FP_PACK_D(frD, R)); |
| 37 | } |