Commit | Line | Data |
---|---|---|
1da177e4 LT |
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 | #include "single.h" | |
8 | ||
9 | int | |
10 | fnmsubs(void *frD, void *frA, void *frB, void *frC) | |
11 | { | |
12 | FP_DECL_D(R); | |
13 | FP_DECL_D(A); | |
14 | FP_DECL_D(B); | |
15 | FP_DECL_D(C); | |
16 | FP_DECL_D(T); | |
17 | int ret = 0; | |
18 | ||
19 | #ifdef DEBUG | |
20 | printk("%s: %p %p %p %p\n", __FUNCTION__, frD, frA, frB, frC); | |
21 | #endif | |
22 | ||
23 | __FP_UNPACK_D(A, frA); | |
24 | __FP_UNPACK_D(B, frB); | |
25 | __FP_UNPACK_D(C, frC); | |
26 | ||
27 | #ifdef DEBUG | |
28 | printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c); | |
29 | printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c); | |
30 | printk("C: %ld %lu %lu %ld (%ld)\n", C_s, C_f1, C_f0, C_e, C_c); | |
31 | #endif | |
32 | ||
33 | if ((A_c == FP_CLS_INF && C_c == FP_CLS_ZERO) || | |
34 | (A_c == FP_CLS_ZERO && C_c == FP_CLS_INF)) | |
35 | ret |= EFLAG_VXIMZ; | |
36 | ||
37 | FP_MUL_D(T, A, C); | |
38 | ||
39 | if (B_c != FP_CLS_NAN) | |
40 | B_s ^= 1; | |
41 | ||
42 | if (T_s != B_s && T_c == FP_CLS_INF && B_c == FP_CLS_INF) | |
43 | ret |= EFLAG_VXISI; | |
44 | ||
45 | FP_ADD_D(R, T, B); | |
46 | ||
47 | if (R_c != FP_CLS_NAN) | |
48 | R_s ^= 1; | |
49 | ||
50 | #ifdef DEBUG | |
51 | printk("D: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c); | |
52 | #endif | |
53 | ||
54 | return (ret | __FP_PACK_DS(frD, R)); | |
55 | } |