mirror of
https://github.com/golang/go
synced 2024-11-17 01:44:52 -07:00
edae0ff8c1
TMLL, LGDR and LDGR have all been added to the Go assembler previously, so we don't need to encode them using WORD and BYTE directives anymore. This is purely a cosmetic change, it does not change the contents of any object files. Change-Id: I93f815b91be310858297d8a0dc9e6d8e3f09dd65 Reviewed-on: https://go-review.googlesource.com/129895 Run-TryBot: Michael Munday <mike.munday@ibm.com> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
145 lines
3.7 KiB
ArmAsm
145 lines
3.7 KiB
ArmAsm
// Copyright 2017 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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#include "textflag.h"
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// Minimax polynomial coefficients and other constants
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DATA ·acosrodataL13<> + 0(SB)/8, $0.314159265358979323E+01 //pi
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DATA ·acosrodataL13<> + 8(SB)/8, $-0.0
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DATA ·acosrodataL13<> + 16(SB)/8, $0x7ff8000000000000 //Nan
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DATA ·acosrodataL13<> + 24(SB)/8, $-1.0
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DATA ·acosrodataL13<> + 32(SB)/8, $1.0
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DATA ·acosrodataL13<> + 40(SB)/8, $0.166666666666651626E+00
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DATA ·acosrodataL13<> + 48(SB)/8, $0.750000000042621169E-01
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DATA ·acosrodataL13<> + 56(SB)/8, $0.446428567178116477E-01
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DATA ·acosrodataL13<> + 64(SB)/8, $0.303819660378071894E-01
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DATA ·acosrodataL13<> + 72(SB)/8, $0.223715011892010405E-01
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DATA ·acosrodataL13<> + 80(SB)/8, $0.173659424522364952E-01
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DATA ·acosrodataL13<> + 88(SB)/8, $0.137810186504372266E-01
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DATA ·acosrodataL13<> + 96(SB)/8, $0.134066870961173521E-01
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DATA ·acosrodataL13<> + 104(SB)/8, $-.412335502831898721E-02
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DATA ·acosrodataL13<> + 112(SB)/8, $0.867383739532082719E-01
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DATA ·acosrodataL13<> + 120(SB)/8, $-.328765950607171649E+00
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DATA ·acosrodataL13<> + 128(SB)/8, $0.110401073869414626E+01
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DATA ·acosrodataL13<> + 136(SB)/8, $-.270694366992537307E+01
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DATA ·acosrodataL13<> + 144(SB)/8, $0.500196500770928669E+01
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DATA ·acosrodataL13<> + 152(SB)/8, $-.665866959108585165E+01
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DATA ·acosrodataL13<> + 160(SB)/8, $-.344895269334086578E+01
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DATA ·acosrodataL13<> + 168(SB)/8, $0.927437952918301659E+00
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DATA ·acosrodataL13<> + 176(SB)/8, $0.610487478874645653E+01
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DATA ·acosrodataL13<> + 184(SB)/8, $0.157079632679489656e+01
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DATA ·acosrodataL13<> + 192(SB)/8, $0.0
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GLOBL ·acosrodataL13<> + 0(SB), RODATA, $200
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// Acos returns the arccosine, in radians, of the argument.
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//
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// Special case is:
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// Acos(x) = NaN if x < -1 or x > 1
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// The algorithm used is minimax polynomial approximation
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// with coefficients determined with a Remez exchange algorithm.
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TEXT ·acosAsm(SB), NOSPLIT, $0-16
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FMOVD x+0(FP), F0
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MOVD $·acosrodataL13<>+0(SB), R9
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LGDR F0, R12
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FMOVD F0, F10
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SRAD $32, R12
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WORD $0xC0293FE6 //iilf %r2,1072079005
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BYTE $0xA0
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BYTE $0x9D
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WORD $0xB917001C //llgtr %r1,%r12
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CMPW R1,R2
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BGT L2
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FMOVD 192(R9), F8
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FMADD F0, F0, F8
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FMOVD 184(R9), F1
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L3:
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WFMDB V8, V8, V2
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FMOVD 176(R9), F6
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FMOVD 168(R9), F0
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FMOVD 160(R9), F4
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WFMADB V2, V0, V6, V0
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FMOVD 152(R9), F6
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WFMADB V2, V4, V6, V4
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FMOVD 144(R9), F6
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WFMADB V2, V0, V6, V0
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FMOVD 136(R9), F6
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WFMADB V2, V4, V6, V4
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FMOVD 128(R9), F6
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WFMADB V2, V0, V6, V0
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FMOVD 120(R9), F6
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WFMADB V2, V4, V6, V4
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FMOVD 112(R9), F6
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WFMADB V2, V0, V6, V0
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FMOVD 104(R9), F6
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WFMADB V2, V4, V6, V4
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FMOVD 96(R9), F6
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WFMADB V2, V0, V6, V0
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FMOVD 88(R9), F6
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WFMADB V2, V4, V6, V4
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FMOVD 80(R9), F6
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WFMADB V2, V0, V6, V0
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FMOVD 72(R9), F6
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WFMADB V2, V4, V6, V4
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FMOVD 64(R9), F6
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WFMADB V2, V0, V6, V0
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FMOVD 56(R9), F6
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WFMADB V2, V4, V6, V4
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FMOVD 48(R9), F6
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WFMADB V2, V0, V6, V0
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FMOVD 40(R9), F6
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WFMADB V2, V4, V6, V2
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FMOVD 192(R9), F4
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WFMADB V8, V0, V2, V0
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WFMADB V10, V8, V4, V8
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FMADD F0, F8, F10
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WFSDB V10, V1, V10
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L1:
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FMOVD F10, ret+8(FP)
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RET
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L2:
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WORD $0xC0293FEF //iilf %r2,1072693247
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BYTE $0xFF
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BYTE $0xFF
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CMPW R1, R2
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BLE L12
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L4:
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WORD $0xED009020 //cdb %f0,.L34-.L13(%r9)
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BYTE $0x00
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BYTE $0x19
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BEQ L8
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WORD $0xED009018 //cdb %f0,.L35-.L13(%r9)
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BYTE $0x00
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BYTE $0x19
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BEQ L9
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WFCEDBS V10, V10, V0
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BVS L1
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FMOVD 16(R9), F10
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BR L1
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L12:
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FMOVD 24(R9), F0
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FMADD F10, F10, F0
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WORD $0xB3130080 //lcdbr %f8,%f0
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WORD $0xED009008 //cdb %f0,.L37-.L13(%r9)
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BYTE $0x00
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BYTE $0x19
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FSQRT F8, F10
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L5:
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MOVW R12, R4
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CMPBLE R4, $0, L7
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WORD $0xB31300AA //lcdbr %f10,%f10
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FMOVD $0, F1
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BR L3
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L9:
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FMOVD 0(R9), F10
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BR L1
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L8:
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FMOVD $0, F0
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FMOVD F0, ret+8(FP)
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RET
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L7:
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FMOVD 0(R9), F1
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BR L3
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