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| // Copyright 2017 The Go Authors. All rights reserved.
| // Use of this source code is governed by a BSD-style
| // license that can be found in the LICENSE file.
|
| #include "textflag.h"
|
| // Minimax polynomial coefficients and other constants
| DATA ·asinhrodataL18<> + 0(SB)/8, $0.749999999977387502E-01
| DATA ·asinhrodataL18<> + 8(SB)/8, $-.166666666666657082E+00
| DATA ·asinhrodataL18<> + 16(SB)/8, $0.303819368237360639E-01
| DATA ·asinhrodataL18<> + 24(SB)/8, $-.446428569571752982E-01
| DATA ·asinhrodataL18<> + 32(SB)/8, $0.173500047922695924E-01
| DATA ·asinhrodataL18<> + 40(SB)/8, $-.223719767210027185E-01
| DATA ·asinhrodataL18<> + 48(SB)/8, $0.113655037946822130E-01
| DATA ·asinhrodataL18<> + 56(SB)/8, $0.579747490622448943E-02
| DATA ·asinhrodataL18<> + 64(SB)/8, $-.139372433914359122E-01
| DATA ·asinhrodataL18<> + 72(SB)/8, $-.218674325255800840E-02
| DATA ·asinhrodataL18<> + 80(SB)/8, $-.891074277756961157E-02
| DATA ·asinhrodataL18<> + 88(SB)/8, $.41375273347623353626
| DATA ·asinhrodataL18<> + 96(SB)/8, $.51487302528619766235E+04
| DATA ·asinhrodataL18<> + 104(SB)/8, $-1.67526912689208984375
| DATA ·asinhrodataL18<> + 112(SB)/8, $0.181818181818181826E+00
| DATA ·asinhrodataL18<> + 120(SB)/8, $-.165289256198351540E-01
| DATA ·asinhrodataL18<> + 128(SB)/8, $0.200350613573012186E-02
| DATA ·asinhrodataL18<> + 136(SB)/8, $-.273205381970859341E-03
| DATA ·asinhrodataL18<> + 144(SB)/8, $0.397389654305194527E-04
| DATA ·asinhrodataL18<> + 152(SB)/8, $0.938370938292558173E-06
| DATA ·asinhrodataL18<> + 160(SB)/8, $0.212881813645679599E-07
| DATA ·asinhrodataL18<> + 168(SB)/8, $-.602107458843052029E-05
| DATA ·asinhrodataL18<> + 176(SB)/8, $-.148682720127920854E-06
| DATA ·asinhrodataL18<> + 184(SB)/8, $-5.5
| DATA ·asinhrodataL18<> + 192(SB)/8, $1.0
| DATA ·asinhrodataL18<> + 200(SB)/8, $1.0E-20
| GLOBL ·asinhrodataL18<> + 0(SB), RODATA, $208
|
| // Table of log correction terms
| DATA ·asinhtab2080<> + 0(SB)/8, $0.585235384085551248E-01
| DATA ·asinhtab2080<> + 8(SB)/8, $0.412206153771168640E-01
| DATA ·asinhtab2080<> + 16(SB)/8, $0.273839003221648339E-01
| DATA ·asinhtab2080<> + 24(SB)/8, $0.166383778368856480E-01
| DATA ·asinhtab2080<> + 32(SB)/8, $0.866678223433169637E-02
| DATA ·asinhtab2080<> + 40(SB)/8, $0.319831684989627514E-02
| DATA ·asinhtab2080<> + 48(SB)/8, $0.0
| DATA ·asinhtab2080<> + 56(SB)/8, $-.113006378583725549E-02
| DATA ·asinhtab2080<> + 64(SB)/8, $-.367979419636602491E-03
| DATA ·asinhtab2080<> + 72(SB)/8, $0.213172484510484979E-02
| DATA ·asinhtab2080<> + 80(SB)/8, $0.623271047682013536E-02
| DATA ·asinhtab2080<> + 88(SB)/8, $0.118140812789696885E-01
| DATA ·asinhtab2080<> + 96(SB)/8, $0.187681358930914206E-01
| DATA ·asinhtab2080<> + 104(SB)/8, $0.269985148668178992E-01
| DATA ·asinhtab2080<> + 112(SB)/8, $0.364186619761331328E-01
| DATA ·asinhtab2080<> + 120(SB)/8, $0.469505379381388441E-01
| GLOBL ·asinhtab2080<> + 0(SB), RODATA, $128
|
| // Asinh returns the inverse hyperbolic sine of the argument.
| //
| // Special cases are:
| // Asinh(±0) = ±0
| // Asinh(±Inf) = ±Inf
| // Asinh(NaN) = NaN
| // The algorithm used is minimax polynomial approximation
| // with coefficients determined with a Remez exchange algorithm.
|
| TEXT ·asinhAsm(SB), NOSPLIT, $0-16
| FMOVD x+0(FP), F0
| MOVD $·asinhrodataL18<>+0(SB), R9
| LGDR F0, R12
| WORD $0xC0293FDF //iilf %r2,1071644671
| BYTE $0xFF
| BYTE $0xFF
| SRAD $32, R12
| WORD $0xB917001C //llgtr %r1,%r12
| MOVW R1, R6
| MOVW R2, R7
| CMPBLE R6, R7, L2
| WORD $0xC0295FEF //iilf %r2,1609564159
| BYTE $0xFF
| BYTE $0xFF
| MOVW R2, R7
| CMPBLE R6, R7, L14
| L3:
| WORD $0xC0297FEF //iilf %r2,2146435071
| BYTE $0xFF
| BYTE $0xFF
| CMPW R1, R2
| BGT L1
| LTDBR F0, F0
| FMOVD F0, F10
| BLTU L15
| L9:
| FMOVD $0, F0
| WFADB V0, V10, V0
| WORD $0xC0398006 //iilf %r3,2147909631
| BYTE $0x7F
| BYTE $0xFF
| LGDR F0, R5
| SRAD $32, R5
| MOVH $0x0, R2
| SUBW R5, R3
| FMOVD $0, F8
| WORD $0xEC4320AF //risbg %r4,%r3,32,128+47,0
| BYTE $0x00
| BYTE $0x55
| BYTE $0x18 //lr %r1,%r4
| BYTE $0x14
| WORD $0xEC24001F //risbgn %r2,%r4,64-64+0,64-64+0+32-1,64-0-32
| BYTE $0x20
| BYTE $0x59
| SUBW $0x100000, R1
| SRAW $8, R1, R1
| ORW $0x45000000, R1
| BR L6
| L2:
| MOVD $0x30000000, R2
| CMPW R1, R2
| BGT L16
| FMOVD 200(R9), F2
| FMADD F2, F0, F0
| L1:
| FMOVD F0, ret+8(FP)
| RET
| L14:
| LTDBR F0, F0
| BLTU L17
| FMOVD F0, F10
| L4:
| FMOVD 192(R9), F2
| WFMADB V0, V0, V2, V0
| LTDBR F0, F0
| FSQRT F0, F8
| L5:
| WFADB V8, V10, V0
| WORD $0xC0398006 //iilf %r3,2147909631
| BYTE $0x7F
| BYTE $0xFF
| LGDR F0, R5
| SRAD $32, R5
| MOVH $0x0, R2
| SUBW R5, R3
| WORD $0xEC4320AF //risbg %r4,%r3,32,128+47,0
| BYTE $0x00
| BYTE $0x55
| SRAW $8, R4, R1
| WORD $0xEC24001F //risbgn %r2,%r4,64-64+0,64-64+0+32-1,64-0-32
| BYTE $0x20
| BYTE $0x59
| ORW $0x45000000, R1
| L6:
| LDGR R2, F2
| FMOVD 184(R9), F0
| WFMADB V8, V2, V0, V8
| FMOVD 176(R9), F4
| WFMADB V10, V2, V8, V2
| FMOVD 168(R9), F0
| FMOVD 160(R9), F6
| FMOVD 152(R9), F1
| WFMADB V2, V6, V4, V6
| WFMADB V2, V1, V0, V1
| WFMDB V2, V2, V4
| FMOVD 144(R9), F0
| WFMADB V6, V4, V1, V6
| FMOVD 136(R9), F1
| WORD $0xEC3339BC //risbg %r3,%r3,57,128+60,64-13
| BYTE $0x33
| BYTE $0x55
| WFMADB V2, V0, V1, V0
| FMOVD 128(R9), F1
| WFMADB V4, V6, V0, V6
| FMOVD 120(R9), F0
| WFMADB V2, V1, V0, V1
| VLVGF $0, R1, V0
| WFMADB V4, V6, V1, V4
| LDEBR F0, F0
| FMOVD 112(R9), F6
| WFMADB V2, V4, V6, V4
| MOVD $·asinhtab2080<>+0(SB), R1
| FMOVD 104(R9), F1
| WORD $0x68331000 //ld %f3,0(%r3,%r1)
| FMOVD 96(R9), F6
| WFMADB V2, V4, V3, V2
| WFMADB V0, V1, V6, V0
| FMOVD 88(R9), F4
| WFMADB V0, V4, V2, V0
| MOVD R12, R6
| CMPBGT R6, $0, L1
|
| WORD $0xB3130000 //lcdbr %f0,%f0
| FMOVD F0, ret+8(FP)
| RET
| L16:
| WFMDB V0, V0, V1
| FMOVD 80(R9), F6
| WFMDB V1, V1, V4
| FMOVD 72(R9), F2
| WFMADB V4, V2, V6, V2
| FMOVD 64(R9), F3
| FMOVD 56(R9), F6
| WFMADB V4, V2, V3, V2
| FMOVD 48(R9), F3
| WFMADB V4, V6, V3, V6
| FMOVD 40(R9), F5
| FMOVD 32(R9), F3
| WFMADB V4, V2, V5, V2
| WFMADB V4, V6, V3, V6
| FMOVD 24(R9), F5
| FMOVD 16(R9), F3
| WFMADB V4, V2, V5, V2
| WFMADB V4, V6, V3, V6
| FMOVD 8(R9), F5
| FMOVD 0(R9), F3
| WFMADB V4, V2, V5, V2
| WFMADB V4, V6, V3, V4
| WFMDB V0, V1, V6
| WFMADB V1, V4, V2, V4
| FMADD F4, F6, F0
| FMOVD F0, ret+8(FP)
| RET
| L17:
| WORD $0xB31300A0 //lcdbr %f10,%f0
| BR L4
| L15:
| WORD $0xB31300A0 //lcdbr %f10,%f0
| BR L9
|
|
