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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 | |
16 | #ifdef DEBUG | |
e48b1b45 | 17 | printk("%s: %p %p %p %p\n", __func__, frD, frB); |
1da177e4 LT |
18 | #endif |
19 | ||
d2b194ed | 20 | FP_UNPACK_DP(B, frB); |
1da177e4 LT |
21 | |
22 | #ifdef DEBUG | |
23 | printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c); | |
24 | #endif | |
25 | ||
26 | if (B_s && B_c != FP_CLS_ZERO) | |
033b8a33 | 27 | FP_SET_EXCEPTION(EFLAG_VXSQRT); |
1da177e4 | 28 | if (B_c == FP_CLS_NAN) |
033b8a33 | 29 | FP_SET_EXCEPTION(EFLAG_VXSNAN); |
1da177e4 LT |
30 | |
31 | FP_SQRT_D(R, B); | |
32 | ||
33 | #ifdef DEBUG | |
34 | printk("R: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c); | |
35 | #endif | |
36 | ||
d2b194ed KG |
37 | __FP_PACK_D(frD, R); |
38 | ||
39 | return FP_CUR_EXCEPTIONS; | |
1da177e4 | 40 | } |