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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 ·erfrodataL13<> + 0(SB)/8, $0.243673229298474689E+01
| DATA ·erfrodataL13<> + 8(SB)/8, $-.654905018503145600E+00
| DATA ·erfrodataL13<> + 16(SB)/8, $0.404669310217538718E+01
| DATA ·erfrodataL13<> + 24(SB)/8, $-.564189219162765367E+00
| DATA ·erfrodataL13<> + 32(SB)/8, $-.200104300906596851E+01
| DATA ·erfrodataL13<> + 40(SB)/8, $0.5
| DATA ·erfrodataL13<> + 48(SB)/8, $0.144070097650207154E+00
| DATA ·erfrodataL13<> + 56(SB)/8, $-.116697735205906191E+00
| DATA ·erfrodataL13<> + 64(SB)/8, $0.256847684882319665E-01
| DATA ·erfrodataL13<> + 72(SB)/8, $-.510805169106229148E-02
| DATA ·erfrodataL13<> + 80(SB)/8, $0.885258164825590267E-03
| DATA ·erfrodataL13<> + 88(SB)/8, $-.133861989591931411E-03
| DATA ·erfrodataL13<> + 96(SB)/8, $0.178294867340272534E-04
| DATA ·erfrodataL13<> + 104(SB)/8, $-.211436095674019218E-05
| DATA ·erfrodataL13<> + 112(SB)/8, $0.225503753499344434E-06
| DATA ·erfrodataL13<> + 120(SB)/8, $-.218247939190783624E-07
| DATA ·erfrodataL13<> + 128(SB)/8, $0.193179206264594029E-08
| DATA ·erfrodataL13<> + 136(SB)/8, $-.157440643541715319E-09
| DATA ·erfrodataL13<> + 144(SB)/8, $0.118878583237342616E-10
| DATA ·erfrodataL13<> + 152(SB)/8, $0.554289288424588473E-13
| DATA ·erfrodataL13<> + 160(SB)/8, $-.277649758489502214E-14
| DATA ·erfrodataL13<> + 168(SB)/8, $-.839318416990049443E-12
| DATA ·erfrodataL13<> + 176(SB)/8, $-2.25
| DATA ·erfrodataL13<> + 184(SB)/8, $.12837916709551258632
| DATA ·erfrodataL13<> + 192(SB)/8, $1.0
| DATA ·erfrodataL13<> + 200(SB)/8, $0.500000000000004237e+00
| DATA ·erfrodataL13<> + 208(SB)/8, $1.0
| DATA ·erfrodataL13<> + 216(SB)/8, $0.416666664838056960e-01
| DATA ·erfrodataL13<> + 224(SB)/8, $0.166666666630345592e+00
| DATA ·erfrodataL13<> + 232(SB)/8, $0.138926439368309441e-02
| DATA ·erfrodataL13<> + 240(SB)/8, $0.833349307718286047e-02
| DATA ·erfrodataL13<> + 248(SB)/8, $-.693147180559945286e+00
| DATA ·erfrodataL13<> + 256(SB)/8, $-.144269504088896339e+01
| DATA ·erfrodataL13<> + 264(SB)/8, $281475245147134.9375
| DATA ·erfrodataL13<> + 272(SB)/8, $0.358256136398192529E+01
| DATA ·erfrodataL13<> + 280(SB)/8, $-.554084396500738270E+00
| DATA ·erfrodataL13<> + 288(SB)/8, $0.203630123025312046E+02
| DATA ·erfrodataL13<> + 296(SB)/8, $-.735750304705934424E+01
| DATA ·erfrodataL13<> + 304(SB)/8, $0.250491598091071797E+02
| DATA ·erfrodataL13<> + 312(SB)/8, $-.118955882760959931E+02
| DATA ·erfrodataL13<> + 320(SB)/8, $0.942903335085524187E+01
| DATA ·erfrodataL13<> + 328(SB)/8, $-.564189522219085689E+00
| DATA ·erfrodataL13<> + 336(SB)/8, $-.503767199403555540E+01
| DATA ·erfrodataL13<> + 344(SB)/8, $0xbbc79ca10c924223
| DATA ·erfrodataL13<> + 352(SB)/8, $0.004099975562609307E+01
| DATA ·erfrodataL13<> + 360(SB)/8, $-.324434353381296556E+00
| DATA ·erfrodataL13<> + 368(SB)/8, $0.945204812084476250E-01
| DATA ·erfrodataL13<> + 376(SB)/8, $-.221407443830058214E-01
| DATA ·erfrodataL13<> + 384(SB)/8, $0.426072376238804349E-02
| DATA ·erfrodataL13<> + 392(SB)/8, $-.692229229127016977E-03
| DATA ·erfrodataL13<> + 400(SB)/8, $0.971111253652087188E-04
| DATA ·erfrodataL13<> + 408(SB)/8, $-.119752226272050504E-04
| DATA ·erfrodataL13<> + 416(SB)/8, $0.131662993588532278E-05
| DATA ·erfrodataL13<> + 424(SB)/8, $0.115776482315851236E-07
| DATA ·erfrodataL13<> + 432(SB)/8, $-.780118522218151687E-09
| DATA ·erfrodataL13<> + 440(SB)/8, $-.130465975877241088E-06
| DATA ·erfrodataL13<> + 448(SB)/8, $-0.25
| GLOBL ·erfrodataL13<> + 0(SB), RODATA, $456
|
| // Table of log correction terms
| DATA ·erftab2066<> + 0(SB)/8, $0.442737824274138381e-01
| DATA ·erftab2066<> + 8(SB)/8, $0.263602189790660309e-01
| DATA ·erftab2066<> + 16(SB)/8, $0.122565642281703586e-01
| DATA ·erftab2066<> + 24(SB)/8, $0.143757052860721398e-02
| DATA ·erftab2066<> + 32(SB)/8, $-.651375034121276075e-02
| DATA ·erftab2066<> + 40(SB)/8, $-.119317678849450159e-01
| DATA ·erftab2066<> + 48(SB)/8, $-.150868749549871069e-01
| DATA ·erftab2066<> + 56(SB)/8, $-.161992609578469234e-01
| DATA ·erftab2066<> + 64(SB)/8, $-.154492360403337917e-01
| DATA ·erftab2066<> + 72(SB)/8, $-.129850717389178721e-01
| DATA ·erftab2066<> + 80(SB)/8, $-.892902649276657891e-02
| DATA ·erftab2066<> + 88(SB)/8, $-.338202636596794887e-02
| DATA ·erftab2066<> + 96(SB)/8, $0.357266307045684762e-02
| DATA ·erftab2066<> + 104(SB)/8, $0.118665304327406698e-01
| DATA ·erftab2066<> + 112(SB)/8, $0.214434994118118914e-01
| DATA ·erftab2066<> + 120(SB)/8, $0.322580645161290314e-01
| GLOBL ·erftab2066<> + 0(SB), RODATA, $128
|
| // Table of +/- 1.0
| DATA ·erftab12067<> + 0(SB)/8, $1.0
| DATA ·erftab12067<> + 8(SB)/8, $-1.0
| GLOBL ·erftab12067<> + 0(SB), RODATA, $16
|
| // Erf returns the error function of the argument.
| //
| // Special cases are:
| // Erf(+Inf) = 1
| // Erf(-Inf) = -1
| // Erf(NaN) = NaN
| // The algorithm used is minimax polynomial approximation
| // with coefficients determined with a Remez exchange algorithm.
|
| TEXT ·erfAsm(SB), NOSPLIT, $0-16
| FMOVD x+0(FP), F0
| MOVD $·erfrodataL13<>+0(SB), R5
| LGDR F0, R1
| FMOVD F0, F6
| SRAD $48, R1
| MOVH $16383, R3
| WORD $0xEC2131BF //risbg %r2,%r1,49,128+63,0
| BYTE $0x00
| BYTE $0x55
| MOVW R2, R6
| MOVW R3, R7
| CMPBGT R6, R7, L2
| MOVH $12287, R1
| MOVW R1, R7
| CMPBLE R6, R7 ,L12
| MOVH $16367, R1
| MOVW R1, R7
| CMPBGT R6, R7, L5
| FMOVD 448(R5), F4
| FMADD F0, F0, F4
| FMOVD 440(R5), F3
| WFMDB V4, V4, V2
| FMOVD 432(R5), F0
| FMOVD 424(R5), F1
| WFMADB V2, V0, V3, V0
| FMOVD 416(R5), F3
| WFMADB V2, V1, V3, V1
| FMOVD 408(R5), F5
| FMOVD 400(R5), F3
| WFMADB V2, V0, V5, V0
| WFMADB V2, V1, V3, V1
| FMOVD 392(R5), F5
| FMOVD 384(R5), F3
| WFMADB V2, V0, V5, V0
| WFMADB V2, V1, V3, V1
| FMOVD 376(R5), F5
| FMOVD 368(R5), F3
| WFMADB V2, V0, V5, V0
| WFMADB V2, V1, V3, V1
| FMOVD 360(R5), F5
| FMOVD 352(R5), F3
| WFMADB V2, V0, V5, V0
| WFMADB V2, V1, V3, V2
| WFMADB V4, V0, V2, V0
| WFMADB V6, V0, V6, V0
| L1:
| FMOVD F0, ret+8(FP)
| RET
| L2:
| MOVH R1, R1
| MOVH $16407, R3
| SRW $31, R1, R1
| MOVW R2, R6
| MOVW R3, R7
| CMPBLE R6, R7, L6
| MOVW R1, R1
| SLD $3, R1, R1
| MOVD $·erftab12067<>+0(SB), R3
| WORD $0x68013000 //ld %f0,0(%r1,%r3)
| MOVH $32751, R1
| MOVW R1, R7
| CMPBGT R6, R7, L7
| FMOVD 344(R5), F2
| FMADD F2, F0, F0
| L7:
| WFCEDBS V6, V6, V2
| BEQ L1
| FMOVD F6, F0
| FMOVD F0, ret+8(FP)
| RET
|
| L6:
| MOVW R1, R1
| SLD $3, R1, R1
| MOVD $·erftab12067<>+0(SB), R4
| WFMDB V0, V0, V1
| MOVH $0x0, R3
| WORD $0x68014000 //ld %f0,0(%r1,%r4)
| MOVH $16399, R1
| MOVW R2, R6
| MOVW R1, R7
| CMPBGT R6, R7, L8
| FMOVD 336(R5), F3
| FMOVD 328(R5), F2
| FMOVD F1, F4
| WFMADB V1, V2, V3, V2
| WORD $0xED405140 //adb %f4,.L30-.L13(%r5)
| BYTE $0x00
| BYTE $0x1A
| FMOVD 312(R5), F3
| WFMADB V1, V2, V3, V2
| FMOVD 304(R5), F3
| WFMADB V1, V4, V3, V4
| FMOVD 296(R5), F3
| WFMADB V1, V2, V3, V2
| FMOVD 288(R5), F3
| WFMADB V1, V4, V3, V4
| FMOVD 280(R5), F3
| WFMADB V1, V2, V3, V2
| FMOVD 272(R5), F3
| WFMADB V1, V4, V3, V4
| L9:
| FMOVD 264(R5), F3
| FMUL F4, F6
| FMOVD 256(R5), F4
| WFMADB V1, V4, V3, V4
| FDIV F6, F2
| LGDR F4, R1
| FSUB F3, F4
| FMOVD 248(R5), F6
| WFMSDB V4, V6, V1, V4
| FMOVD 240(R5), F1
| FMOVD 232(R5), F6
| WFMADB V4, V6, V1, V6
| FMOVD 224(R5), F1
| FMOVD 216(R5), F3
| WFMADB V4, V3, V1, V3
| WFMDB V4, V4, V1
| FMOVD 208(R5), F5
| WFMADB V6, V1, V3, V6
| FMOVD 200(R5), F3
| MOVH R1,R1
| WFMADB V4, V3, V5, V3
| WORD $0xEC2139BC //risbg %r2,%r1,57,128+60,3
| BYTE $0x03
| BYTE $0x55
| WFMADB V1, V6, V3, V6
| WORD $0xEC31000F //risbgn %r3,%r1,64-64+0,64-64+0+16-1,64-0-16
| BYTE $0x30
| BYTE $0x59
| MOVD $·erftab2066<>+0(SB), R1
| FMOVD 192(R5), F1
| LDGR R3, F3
| WORD $0xED221000 //madb %f2,%f2,0(%r2,%r1)
| BYTE $0x20
| BYTE $0x1E
| WFMADB V4, V6, V1, V4
| FMUL F3, F2
| FMADD F4, F2, F0
| FMOVD F0, ret+8(FP)
| RET
| L12:
| FMOVD 184(R5), F0
| WFMADB V6, V0, V6, V0
| FMOVD F0, ret+8(FP)
| RET
| L5:
| FMOVD 176(R5), F1
| FMADD F0, F0, F1
| FMOVD 168(R5), F3
| WFMDB V1, V1, V2
| FMOVD 160(R5), F0
| FMOVD 152(R5), F4
| WFMADB V2, V0, V3, V0
| FMOVD 144(R5), F3
| WFMADB V2, V4, V3, V4
| FMOVD 136(R5), F5
| FMOVD 128(R5), F3
| WFMADB V2, V0, V5, V0
| WFMADB V2, V4, V3, V4
| FMOVD 120(R5), F5
| FMOVD 112(R5), F3
| WFMADB V2, V0, V5, V0
| WFMADB V2, V4, V3, V4
| FMOVD 104(R5), F5
| FMOVD 96(R5), F3
| WFMADB V2, V0, V5, V0
| WFMADB V2, V4, V3, V4
| FMOVD 88(R5), F5
| FMOVD 80(R5), F3
| WFMADB V2, V0, V5, V0
| WFMADB V2, V4, V3, V4
| FMOVD 72(R5), F5
| FMOVD 64(R5), F3
| WFMADB V2, V0, V5, V0
| WFMADB V2, V4, V3, V4
| FMOVD 56(R5), F5
| FMOVD 48(R5), F3
| WFMADB V2, V0, V5, V0
| WFMADB V2, V4, V3, V2
| FMOVD 40(R5), F4
| WFMADB V1, V0, V2, V0
| FMUL F6, F0
| FMADD F4, F6, F0
| FMOVD F0, ret+8(FP)
| RET
| L8:
| FMOVD 32(R5), F3
| FMOVD 24(R5), F2
| FMOVD F1, F4
| WFMADB V1, V2, V3, V2
| WORD $0xED405010 //adb %f4,.L68-.L13(%r5)
| BYTE $0x00
| BYTE $0x1A
| FMOVD 8(R5), F3
| WFMADB V1, V2, V3, V2
| FMOVD ·erfrodataL13<>+0(SB), F3
| WFMADB V1, V4, V3, V4
| BR L9
|
|
