xref: /openbmc/linux/arch/powerpc/math-emu/fsqrts.c (revision 6ee73861)
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 
10 int
11 fsqrts(void *frD, void *frB)
12 {
13 	FP_DECL_D(B);
14 	FP_DECL_D(R);
15 	FP_DECL_EX;
16 
17 #ifdef DEBUG
18 	printk("%s: %p %p %p %p\n", __func__, frD, frB);
19 #endif
20 
21 	FP_UNPACK_DP(B, frB);
22 
23 #ifdef DEBUG
24 	printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c);
25 #endif
26 
27 	if (B_s && B_c != FP_CLS_ZERO)
28 		FP_SET_EXCEPTION(EFLAG_VXSQRT);
29 	if (B_c == FP_CLS_NAN)
30 		FP_SET_EXCEPTION(EFLAG_VXSNAN);
31 
32 	FP_SQRT_D(R, B);
33 
34 #ifdef DEBUG
35 	printk("R: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c);
36 #endif
37 
38 	__FP_PACK_DS(frD, R);
39 
40 	return FP_CUR_EXCEPTIONS;
41 }
42