projects / people / ms / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | #include <linux/types.h> |
| 2 | #include <linux/errno.h> | |
| 7c0f6ba6 | 3 | #include <linux/uaccess.h> |
| 1da177e4 | 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 | fnmsub(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); | |
| d2b194ed | 17 | FP_DECL_EX; |
| 1da177e4 LT |
18 | |
| 19 | #ifdef DEBUG | |
| e48b1b45 | 20 | printk("%s: %p %p %p %p\n", __func__, frD, frA, frB, frC); |
| 1da177e4 LT |
21 | #endif |
| 22 | ||
| d2b194ed KG |
23 | FP_UNPACK_DP(A, frA); |
| 24 | FP_UNPACK_DP(B, frB); | |
| 25 | FP_UNPACK_DP(C, frC); | |
| 1da177e4 LT |
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)) | |
| 033b8a33 | 35 | FP_SET_EXCEPTION(EFLAG_VXIMZ); |
| 1da177e4 LT |
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) | |
| 033b8a33 | 43 | FP_SET_EXCEPTION(EFLAG_VXISI); |
| 1da177e4 LT |
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 | ||
| d2b194ed KG |
54 | __FP_PACK_D(frD, R); |
| 55 | ||
| 56 | return FP_CUR_EXCEPTIONS; | |
| 1da177e4 | 57 | } |