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
8 int
fsqrt(void * frD,void * frB)9 fsqrt(void *frD, void *frB)
10 {
11 FP_DECL_D(B);
12 FP_DECL_D(R);
13 int ret = 0;
14
15 #ifdef DEBUG
16 printk("%s: %p %p %p %p\n", __FUNCTION__, frD, frB);
17 #endif
18
19 __FP_UNPACK_D(B, frB);
20
21 #ifdef DEBUG
22 printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c);
23 #endif
24
25 if (B_s && B_c != FP_CLS_ZERO)
26 ret |= EFLAG_VXSQRT;
27 if (B_c == FP_CLS_NAN)
28 ret |= EFLAG_VXSNAN;
29
30 FP_SQRT_D(R, B);
31
32 #ifdef DEBUG
33 printk("R: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c);
34 #endif
35
36 return (ret | __FP_PACK_D(frD, R));
37 }
38