kolibrios-fun/programs/develop/libraries/kolibri-libc/source/math/pow2.s
turbocat 728f124678 Added git source kolibri-libc and
Configured autobuild

git-svn-id: svn://kolibrios.org@8687 a494cfbc-eb01-0410-851d-a64ba20cac60
2021-04-27 16:33:31 +00:00

33 lines
408 B
ArmAsm

/* Copyright (C) 1995 DJ Delorie, see COPYING.DJ for details */
.data
pow2.LCW1:
.word 0
pow2.LCW2:
.word 0
pow2.LC0:
.double 0d1.0e+00
.text
.global pow2;
pow2:
fldl 4(%esp)
fstcw pow2.LCW1
fstcw pow2.LCW2
fwait
andw $0xf3ff,pow2.LCW2
orw $0x0400,pow2.LCW2
fldcw pow2.LCW2
fldl %st(0)
frndint
fldcw pow2.LCW1
fxch %st(1)
fsub %st(1),%st
f2xm1
faddl pow2.LC0
fscale
fstp %st(1)
ret