1/*
2 * Public domain.
3 */
4
5#include <libm-alias-ldouble.h>
6#include <machine/asm.h>
7
8ENTRY(__floorl)
9 fldt 8(%rsp)
10
11 fnstenv -28(%rsp) /* store fpu environment */
12
13 /* We use here %edx although only the low 1 bits are defined.
14 But none of the operations should care and they are faster
15 than the 16 bit operations. */
16 movl $0x400,%edx /* round towards -oo */
17 orl -28(%rsp),%edx
18 andl $0xf7ff,%edx
19 movl %edx,-32(%rsp)
20 fldcw -32(%rsp) /* load modified control word */
21
22 frndint /* round */
23
24 /* Preserve "invalid" exceptions from sNaN input. */
25 fnstsw
26 andl $0x1, %eax
27 orl %eax, -24(%rsp)
28
29 fldenv -28(%rsp) /* restore original environment */
30
31 ret
32END (__floorl)
33libm_alias_ldouble (__floor, floor)
34