1#include <linux/types.h>
2#include <linux/errno.h>
3#include <asm/uaccess.h>
4
5#include <asm/sfp-machine.h>
6#include <math-emu/soft-fp.h>
7#include <math-emu/double.h>
8#include <math-emu/single.h>
9
10int
11fsubs(void *frD, void *frA, void *frB)
12{
13	FP_DECL_D(A);
14	FP_DECL_D(B);
15	FP_DECL_D(R);
16	FP_DECL_EX;
17
18#ifdef DEBUG
19	printk("%s: %p %p %p\n", __func__, frD, frA, frB);
20#endif
21
22	FP_UNPACK_DP(A, frA);
23	FP_UNPACK_DP(B, frB);
24
25#ifdef DEBUG
26	printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c);
27	printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c);
28#endif
29
30	if (B_c != FP_CLS_NAN)
31		B_s ^= 1;
32
33	if (A_s != B_s && A_c == FP_CLS_INF && B_c == FP_CLS_INF)
34		FP_SET_EXCEPTION(EFLAG_VXISI);
35
36	FP_ADD_D(R, A, B);
37
38#ifdef DEBUG
39	printk("D: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c);
40#endif
41
42	__FP_PACK_DS(frD, R);
43
44	return FP_CUR_EXCEPTIONS;
45}
46