[mirror_ubuntu-bionic-kernel.git] / arch / powerpc / math-emu / fsub.c

#include <linux/types.h>
#include <linux/errno.h>
#include <linux/uaccess.h>

#include <asm/sfp-machine.h>
#include <math-emu/soft-fp.h>
#include <math-emu/double.h>

int
fsub(void *frD, void *frA, void *frB)
{
	FP_DECL_D(A);
	FP_DECL_D(B);
	FP_DECL_D(R);
	FP_DECL_EX;

#ifdef DEBUG
	printk("%s: %p %p %p\n", __func__, frD, frA, frB);
#endif

	FP_UNPACK_DP(A, frA);
	FP_UNPACK_DP(B, frB);

#ifdef DEBUG
	printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c);
	printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c);
#endif

	if (B_c != FP_CLS_NAN)
		B_s ^= 1;

	if (A_s != B_s && A_c == FP_CLS_INF && B_c == FP_CLS_INF)
		FP_SET_EXCEPTION(EFLAG_VXISI);

	FP_ADD_D(R, A, B);

#ifdef DEBUG
	printk("D: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c);
#endif

	__FP_PACK_D(frD, R);

	return FP_CUR_EXCEPTIONS;
}
Commit	Line	Data
1da177e4 LT	1	#include <linux/types.h>
1da177e4 LT	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	fsub(void frD, void frA, void *frB)
	11	{
	12	FP_DECL_D(A);
	13	FP_DECL_D(B);
	14	FP_DECL_D(R);
d2b194ed	15	FP_DECL_EX;
1da177e4 LT	16
1da177e4 LT	17	#ifdef DEBUG
e48b1b45	18	printk("%s: %p %p %p\n", __func__, frD, frA, frB);
1da177e4 LT	19	#endif
1da177e4 LT	20
d2b194ed KG	21	FP_UNPACK_DP(A, frA);
d2b194ed KG	22	FP_UNPACK_DP(B, frB);
1da177e4 LT	23
	24	#ifdef DEBUG
	25	printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c);
	26	printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c);
	27	#endif
	28
	29	if (B_c != FP_CLS_NAN)
	30	B_s ^= 1;
	31
	32	if (A_s != B_s && A_c == FP_CLS_INF && B_c == FP_CLS_INF)
033b8a33	33	FP_SET_EXCEPTION(EFLAG_VXISI);
1da177e4 LT	34
	35	FP_ADD_D(R, A, B);
	36
	37	#ifdef DEBUG
	38	printk("D: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c);
	39	#endif
	40
d2b194ed KG	41	__FP_PACK_D(frD, R);
	42
	43	return FP_CUR_EXCEPTIONS;
1da177e4	44	}