1/*
2 * BK Id: SCCS/s.fdiv.c 1.6 05/17/01 18:14:22 cort
3 */
4#include <linux/types.h>
5#include <linux/errno.h>
6#include <asm/uaccess.h>
7
8#include "soft-fp.h"
9#include "double.h"
10
11int
12fdiv(void *frD, void *frA, void *frB)
13{
14	FP_DECL_D(A);
15	FP_DECL_D(B);
16	FP_DECL_D(R);
17	int ret = 0;
18
19#ifdef DEBUG
20	printk("%s: %p %p %p\n", __FUNCTION__, frD, frA, frB);
21#endif
22
23	__FP_UNPACK_D(A, frA);
24	__FP_UNPACK_D(B, frB);
25
26#ifdef DEBUG
27	printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c);
28	printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c);
29#endif
30
31	if (A_c == FP_CLS_ZERO && B_c == FP_CLS_ZERO) {
32		ret |= EFLAG_VXZDZ;
33#ifdef DEBUG
34		printk("%s: FPSCR_VXZDZ raised\n", __FUNCTION__);
35#endif
36	}
37	if (A_c == FP_CLS_INF && B_c == FP_CLS_INF) {
38		ret |= EFLAG_VXIDI;
39#ifdef DEBUG
40		printk("%s: FPSCR_VXIDI raised\n", __FUNCTION__);
41#endif
42	}
43
44	if (B_c == FP_CLS_ZERO && A_c != FP_CLS_ZERO) {
45		ret |= EFLAG_DIVZERO;
46		if (__FPU_TRAP_P(EFLAG_DIVZERO))
47			return ret;
48	}
49	FP_DIV_D(R, A, B);
50
51#ifdef DEBUG
52	printk("D: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c);
53#endif
54
55	return (ret | __FP_PACK_D(frD, R));
56}
57