newlib-cygwin/winsup/mingw/mingwex/math/ceill.S

34 lines
718 B
ArmAsm

/*
* Written by J.T. Conklin <jtc@netbsd.org>.
* Public domain.
* Changes for long double by Ulrich Drepper <drepper@cygnus.com>
*/
.file "ceill.S"
.text
.align 4
.globl _ceill
.def _ceill; .scl 2; .type 32; .endef
_ceill:
fldt 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