45 lines
2.3 KiB
ArmAsm
45 lines
2.3 KiB
ArmAsm
/*-*- 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│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ This program is free software; you can redistribute it and/or modify │
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│ it under the terms of the GNU General Public License as published by │
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│ the Free Software Foundation; version 2 of the License. │
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│ │
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│ This program is distributed in the hope that it will be useful, but │
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│ WITHOUT ANY WARRANTY; without even the implied warranty of │
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│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
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│ General Public License for more details. │
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│ │
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│ You should have received a copy of the GNU General Public License │
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│ along with this program; if not, write to the Free Software │
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│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
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│ 02110-1301 USA │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/macros.h"
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.source __FILE__
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tinymath_truncf:
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.leafprologue
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.profilable
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movss 3f(%rip),%xmm1
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andps %xmm0,%xmm1
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movss 2f(%rip),%xmm2
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comiss %xmm1,%xmm2
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jbe 1f
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cvttss2si %xmm0,%eax
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pxor %xmm0,%xmm0
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cvtsi2ss %eax,%xmm0
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1: .leafepilogue
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.endfn tinymath_truncf,globl
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.alias tinymath_truncf,truncf
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.rodata.cst4
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2: .long 0x4b000000
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.rodata.cst16
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3: .long 0x7fffffff,0,0,0
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/ TODO(jart)
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/ roundss $_MM_FROUND_TO_ZERO|_MM_FROUND_NO_EXC,%xmm0,%xmm0
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