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/arch/ppc/math-emu/fmuls.c

https://bitbucket.org/evzijst/gittest
C | 43 lines | 34 code | 9 blank | 0 comment | 7 complexity | c033823a5b1077c6b710b2881827a01c MD5 | raw file
 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
 9int
10fmuls(void *frD, void *frA, void *frB)
11{
12	FP_DECL_D(A);
13	FP_DECL_D(B);
14	FP_DECL_D(R);
15	int ret = 0;
16
17#ifdef DEBUG
18	printk("%s: %p %p %p\n", __FUNCTION__, frD, frA, frB);
19#endif
20
21	__FP_UNPACK_D(A, frA);
22	__FP_UNPACK_D(B, frB);
23
24#ifdef DEBUG
25	printk("A: %ld %lu %lu %ld (%ld) [%08lx.%08lx %lx]\n",
26	       A_s, A_f1, A_f0, A_e, A_c, A_f1, A_f0, A_e + 1023);
27	printk("B: %ld %lu %lu %ld (%ld) [%08lx.%08lx %lx]\n",
28	       B_s, B_f1, B_f0, B_e, B_c, B_f1, B_f0, B_e + 1023);
29#endif
30
31	if ((A_c == FP_CLS_INF && B_c == FP_CLS_ZERO) ||
32	    (A_c == FP_CLS_ZERO && B_c == FP_CLS_INF))
33		ret |= EFLAG_VXIMZ;
34
35	FP_MUL_D(R, A, B);
36
37#ifdef DEBUG
38	printk("D: %ld %lu %lu %ld (%ld) [%08lx.%08lx %lx]\n",
39	       R_s, R_f1, R_f0, R_e, R_c, R_f1, R_f0, R_e + 1023);
40#endif
41
42	return (ret | __FP_PACK_DS(frD, R));
43}