mirror of
https://github.com/KolibriOS/kolibrios.git
synced 2024-12-29 01:39:41 +03:00
32 lines
682 B
ArmAsm
32 lines
682 B
ArmAsm
|
/*
|
||
|
|
* Written by J.T. Conklin <jtc@netbsd.org>.
|
||
|
|
* Public domain.
|
||
|
|
*/
|
||
|
|
|
||
|
|
.file "ceilf.S"
|
||
|
|
.text
|
||
|
|
.align 4
|
||
|
|
.globl _ceilf
|
||
|
|
.def _ceilf; .scl 2; .type 32; .endef
|
||
|
|
_ceilf:
|
||
|
|
flds 4(%esp)
|
||
|
|
subl $8,%esp
|
||
|
|
|
||
|
|
fstcw 4(%esp) /* store fpu control word */
|
||
|
|
|
||
|
|
/* We use here %edx although only the low 1 bits are defined.
|
||
|
|
But none of the operations should care and they are faster
|
||
|
|
than the 16 bit operations. */
|
||
|
|
movl $0x0800,%edx /* round towards +oo */
|
||
|
|
orl 4(%esp),%edx
|
||
|
|
andl $0xfbff,%edx
|
||
|
|
movl %edx,(%esp)
|
||
|
|
fldcw (%esp) /* load modified control word */
|
||
|
|
|
||
|
|
frndint /* round */
|
||
|
|
|
||
|
|
fldcw 4(%esp) /* restore original control word */
|
||
|
|
|
||
|
|
addl $8,%esp
|
||
|
|
ret
|