projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | #include <linux/types.h> |
| 2 | #include <linux/errno.h> | |
| 3 | #include <asm/uaccess.h> | |
| 4 | ||
| d2b194ed KG |
5 | #include <asm/sfp-machine.h> |
| 6 | #include <math-emu/soft-fp.h> | |
| 7 | #include <math-emu/double.h> | |
| 1da177e4 LT |
8 | |
| 9 | int | |
| 10 | fsqrt(void *frD, void *frB) | |
| 11 | { | |
| 12 | FP_DECL_D(B); | |
| 13 | FP_DECL_D(R); | |
| d2b194ed | 14 | FP_DECL_EX; |
| 1da177e4 LT |
15 | int ret = 0; |
| 16 | ||
| 17 | #ifdef DEBUG | |
| e48b1b45 | 18 | printk("%s: %p %p %p %p\n", __func__, frD, frB); |
| 1da177e4 LT |
19 | #endif |
| 20 | ||
| d2b194ed | 21 | FP_UNPACK_DP(B, frB); |
| 1da177e4 LT |
22 | |
| 23 | #ifdef DEBUG | |
| 24 | printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c); | |
| 25 | #endif | |
| 26 | ||
| 27 | if (B_s && B_c != FP_CLS_ZERO) | |
| 28 | ret |= EFLAG_VXSQRT; | |
| 29 | if (B_c == FP_CLS_NAN) | |
| 30 | ret |= EFLAG_VXSNAN; | |
| 31 | ||
| 32 | FP_SQRT_D(R, B); | |
| 33 | ||
| 34 | #ifdef DEBUG | |
| 35 | printk("R: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c); | |
| 36 | #endif | |
| 37 | ||
| d2b194ed KG |
38 | __FP_PACK_D(frD, R); |
| 39 | ||
| 40 | return FP_CUR_EXCEPTIONS; | |
| 1da177e4 | 41 | } |