Text file
src/math/sinh_s390x.s
Documentation: math
1// Copyright 2016 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5
6#include "textflag.h"
7
8// Constants
9DATA sinhrodataL21<>+0(SB)/8, $0.231904681384629956E-16
10DATA sinhrodataL21<>+8(SB)/8, $0.693147180559945286E+00
11DATA sinhrodataL21<>+16(SB)/8, $704.E0
12GLOBL sinhrodataL21<>+0(SB), RODATA, $24
13DATA sinhrlog2<>+0(SB)/8, $0x3ff7154760000000
14GLOBL sinhrlog2<>+0(SB), RODATA, $8
15DATA sinhxinf<>+0(SB)/8, $0x7ff0000000000000
16GLOBL sinhxinf<>+0(SB), RODATA, $8
17DATA sinhxinit<>+0(SB)/8, $0x3ffb504f333f9de6
18GLOBL sinhxinit<>+0(SB), RODATA, $8
19DATA sinhxlim1<>+0(SB)/8, $800.E0
20GLOBL sinhxlim1<>+0(SB), RODATA, $8
21DATA sinhxadd<>+0(SB)/8, $0xc3200001610007fb
22GLOBL sinhxadd<>+0(SB), RODATA, $8
23DATA sinhx4ff<>+0(SB)/8, $0x4ff0000000000000
24GLOBL sinhx4ff<>+0(SB), RODATA, $8
25
26// Minimax polynomial approximations
27DATA sinhe0<>+0(SB)/8, $0.11715728752538099300E+01
28GLOBL sinhe0<>+0(SB), RODATA, $8
29DATA sinhe1<>+0(SB)/8, $0.11715728752538099300E+01
30GLOBL sinhe1<>+0(SB), RODATA, $8
31DATA sinhe2<>+0(SB)/8, $0.58578643762688526692E+00
32GLOBL sinhe2<>+0(SB), RODATA, $8
33DATA sinhe3<>+0(SB)/8, $0.19526214587563004497E+00
34GLOBL sinhe3<>+0(SB), RODATA, $8
35DATA sinhe4<>+0(SB)/8, $0.48815536475176217404E-01
36GLOBL sinhe4<>+0(SB), RODATA, $8
37DATA sinhe5<>+0(SB)/8, $0.97631072948627397816E-02
38GLOBL sinhe5<>+0(SB), RODATA, $8
39DATA sinhe6<>+0(SB)/8, $0.16271839297756073153E-02
40GLOBL sinhe6<>+0(SB), RODATA, $8
41DATA sinhe7<>+0(SB)/8, $0.23245485387271142509E-03
42GLOBL sinhe7<>+0(SB), RODATA, $8
43DATA sinhe8<>+0(SB)/8, $0.29080955860869629131E-04
44GLOBL sinhe8<>+0(SB), RODATA, $8
45DATA sinhe9<>+0(SB)/8, $0.32311267157667725278E-05
46GLOBL sinhe9<>+0(SB), RODATA, $8
47
48// Sinh returns the hyperbolic sine of the argument.
49//
50// Special cases are:
51// Sinh(±0) = ±0
52// Sinh(±Inf) = ±Inf
53// Sinh(NaN) = NaN
54// The algorithm used is minimax polynomial approximation
55// with coefficients determined with a Remez exchange algorithm.
56
57TEXT ·sinhAsm(SB),NOSPLIT,$0-16
58 FMOVD x+0(FP), F0
59 //special case Sinh(±0) = ±0
60 FMOVD $(0.0), F1
61 FCMPU F0, F1
62 BEQ sinhIsZero
63 //special case Sinh(±Inf) = ±Inf
64 FMOVD $1.797693134862315708145274237317043567981e+308, F1
65 FCMPU F1, F0
66 BLEU sinhIsInf
67 FMOVD $-1.797693134862315708145274237317043567981e+308, F1
68 FCMPU F1, F0
69 BGT sinhIsInf
70
71 MOVD $sinhrodataL21<>+0(SB), R5
72 LTDBR F0, F0
73 MOVD sinhxinit<>+0(SB), R1
74 FMOVD F0, F4
75 MOVD R1, R3
76 BLTU L19
77 FMOVD F0, F2
78L2:
79 WORD $0xED205010 //cdb %f2,.L22-.L21(%r5)
80 BYTE $0x00
81 BYTE $0x19
82 BGE L15 //jnl .L15
83 BVS L15
84 WFCEDBS V2, V2, V0
85 BEQ L20
86L12:
87 FMOVD F4, F0
88 FMOVD F0, ret+8(FP)
89 RET
90
91L15:
92 WFCEDBS V2, V2, V0
93 BVS L12
94 MOVD $sinhxlim1<>+0(SB), R2
95 FMOVD 0(R2), F0
96 WFCHDBS V0, V2, V0
97 BEQ L6
98 WFCHEDBS V4, V2, V6
99 MOVD $sinhxinf<>+0(SB), R1
100 FMOVD 0(R1), F0
101 BNE LEXITTAGsinh
102 WFCHDBS V2, V4, V2
103 BNE L16
104 FNEG F0, F0
105 FMOVD F0, ret+8(FP)
106 RET
107
108L19:
109 FNEG F0, F2
110 BR L2
111L6:
112 MOVD $sinhxadd<>+0(SB), R2
113 FMOVD 0(R2), F0
114 MOVD sinhrlog2<>+0(SB), R2
115 LDGR R2, F6
116 WFMSDB V4, V6, V0, V16
117 FMOVD sinhrodataL21<>+8(SB), F6
118 WFADB V0, V16, V0
119 FMOVD sinhrodataL21<>+0(SB), F3
120 WFMSDB V0, V6, V4, V6
121 MOVD $sinhe9<>+0(SB), R2
122 WFMADB V0, V3, V6, V0
123 FMOVD 0(R2), F1
124 MOVD $sinhe7<>+0(SB), R2
125 WFMDB V0, V0, V6
126 FMOVD 0(R2), F5
127 MOVD $sinhe8<>+0(SB), R2
128 FMOVD 0(R2), F3
129 MOVD $sinhe6<>+0(SB), R2
130 WFMADB V6, V1, V5, V1
131 FMOVD 0(R2), F5
132 MOVD $sinhe5<>+0(SB), R2
133 FMOVD 0(R2), F7
134 MOVD $sinhe3<>+0(SB), R2
135 WFMADB V6, V3, V5, V3
136 FMOVD 0(R2), F5
137 MOVD $sinhe4<>+0(SB), R2
138 WFMADB V6, V7, V5, V7
139 FMOVD 0(R2), F5
140 MOVD $sinhe2<>+0(SB), R2
141 VLEG $0, 0(R2), V20
142 WFMDB V6, V6, V18
143 WFMADB V6, V5, V20, V5
144 WFMADB V1, V18, V7, V1
145 FNEG F0, F0
146 WFMADB V3, V18, V5, V3
147 MOVD $sinhe1<>+0(SB), R3
148 WFCEDBS V2, V4, V2
149 FMOVD 0(R3), F5
150 MOVD $sinhe0<>+0(SB), R3
151 WFMADB V6, V1, V5, V1
152 FMOVD 0(R3), F5
153 VLGVG $0, V16, R2
154 WFMADB V6, V3, V5, V6
155 RLL $3, R2, R2
156 RISBGN $0, $15, $48, R2, R1
157 BEQ L9
158 WFMSDB V0, V1, V6, V0
159 MOVD $sinhx4ff<>+0(SB), R3
160 FNEG F0, F0
161 FMOVD 0(R3), F2
162 FMUL F2, F0
163 ANDW $0xFFFF, R2
164 WORD $0xA53FEFB6 //llill %r3,61366
165 SUBW R2, R3, R2
166 RISBGN $0, $15, $48, R2, R1
167 LDGR R1, F2
168 FMUL F2, F0
169 FMOVD F0, ret+8(FP)
170 RET
171
172L20:
173 MOVD $sinhxadd<>+0(SB), R2
174 FMOVD 0(R2), F2
175 MOVD sinhrlog2<>+0(SB), R2
176 LDGR R2, F0
177 WFMSDB V4, V0, V2, V6
178 FMOVD sinhrodataL21<>+8(SB), F0
179 FADD F6, F2
180 MOVD $sinhe9<>+0(SB), R2
181 FMSUB F0, F2, F4
182 FMOVD 0(R2), F1
183 FMOVD sinhrodataL21<>+0(SB), F3
184 MOVD $sinhe7<>+0(SB), R2
185 FMADD F3, F2, F4
186 FMOVD 0(R2), F0
187 MOVD $sinhe8<>+0(SB), R2
188 WFMDB V4, V4, V2
189 FMOVD 0(R2), F3
190 MOVD $sinhe6<>+0(SB), R2
191 FMOVD 0(R2), F5
192 LGDR F6, R2
193 RLL $3, R2, R2
194 RISBGN $0, $15, $48, R2, R1
195 WFMADB V2, V1, V0, V1
196 LDGR R1, F0
197 MOVD $sinhe5<>+0(SB), R1
198 WFMADB V2, V3, V5, V3
199 FMOVD 0(R1), F5
200 MOVD $sinhe3<>+0(SB), R1
201 FMOVD 0(R1), F6
202 WFMDB V2, V2, V7
203 WFMADB V2, V5, V6, V5
204 WORD $0xA7487FB6 //lhi %r4,32694
205 FNEG F4, F4
206 ANDW $0xFFFF, R2
207 SUBW R2, R4, R2
208 RISBGN $0, $15, $48, R2, R3
209 LDGR R3, F6
210 WFADB V0, V6, V16
211 MOVD $sinhe4<>+0(SB), R1
212 WFMADB V1, V7, V5, V1
213 WFMDB V4, V16, V4
214 FMOVD 0(R1), F5
215 MOVD $sinhe2<>+0(SB), R1
216 VLEG $0, 0(R1), V16
217 MOVD $sinhe1<>+0(SB), R1
218 WFMADB V2, V5, V16, V5
219 VLEG $0, 0(R1), V16
220 WFMADB V3, V7, V5, V3
221 WFMADB V2, V1, V16, V1
222 FSUB F6, F0
223 FMUL F1, F4
224 MOVD $sinhe0<>+0(SB), R1
225 FMOVD 0(R1), F6
226 WFMADB V2, V3, V6, V2
227 WFMADB V0, V2, V4, V0
228 FMOVD F0, ret+8(FP)
229 RET
230
231L9:
232 WFMADB V0, V1, V6, V0
233 MOVD $sinhx4ff<>+0(SB), R3
234 FMOVD 0(R3), F2
235 FMUL F2, F0
236 WORD $0xA72AF000 //ahi %r2,-4096
237 RISBGN $0, $15, $48, R2, R1
238 LDGR R1, F2
239 FMUL F2, F0
240 FMOVD F0, ret+8(FP)
241 RET
242
243L16:
244 FMOVD F0, ret+8(FP)
245 RET
246
247LEXITTAGsinh:
248sinhIsInf:
249sinhIsZero:
250 FMOVD F0, ret+8(FP)
251 RET
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