cosmopolitan/libc/tinymath/cprojl.S

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/*-*- mode:unix-assembly; indent-tabs-mode:t; tab-width:8; coding:utf-8 -*-│
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vi: set et ft=asm ts=8 tw=8 fenc=utf-8 :vi
Copyright 2020 Justine Alexandra Roberts Tunney
This program is free software; you can redistribute it and/or modify │
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License. │
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of │
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software │
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
*/
#include "libc/macros.h"
.source __FILE__
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tinymath_cprojl:
.profilable
sub $24,%rsp
fldt 32(%rsp)
fnstcw 14(%rsp)
movzwl 14(%rsp),%eax
orb $12,%ah
movw %ax,12(%rsp)
fldcw 12(%rsp)
fistpq (%rsp)
fldcw 14(%rsp)
movq (%rsp),%rsi
fldt 48(%rsp)
mov %rsi,%rax
fldcw 12(%rsp)
fistpq (%rsp)
fldcw 14(%rsp)
movq (%rsp),%rcx
add $24,%rsp
mov %rcx,%rdx
ret
.endfn tinymath_cprojl,globl
.alias tinymath_cprojl,cprojl
/ TODO(jart):
/ sub $24,%rsp
/ fldt 32(%rsp)
/ fisttpq 8(%rsp)
/ fldt 48(%rsp)
/ movq 8(%rsp),%rsi
/ mov %rsi,%rax
/ fisttpq 8(%rsp)
/ movq 8(%rsp),%rcx
/ add $24,%rsp
/ mov %rcx,%rdx
/ ret