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Issue 3539003: Fix up RET instructions in sysdeps/i386/fpu (Closed) Base URL: ssh://gitrw.chromium.org/nacl-glibc
Patch Set: Created 10 years, 2 months ago
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1 /* ix87 specific implementation of arctanh function. 1 /* ix87 specific implementation of arctanh function.
2 Copyright (C) 1996, 1999, 2005 Free Software Foundation, Inc. 2 Copyright (C) 1996, 1999, 2005 Free Software Foundation, Inc.
3 This file is part of the GNU C Library. 3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996. 4 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
5 5
6 The GNU C Library is free software; you can redistribute it and/or 6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public 7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either 8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version. 9 version 2.1 of the License, or (at your option) any later version.
10 10
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77 fmul %st(2) // 2*|x|^2 : 1-|x| : 2*|x| : 0.5*ln2 77 fmul %st(2) // 2*|x|^2 : 1-|x| : 2*|x| : 0.5*ln2
78 fdivp // (2*|x|^2)/(1-|x|) : 2*|x| : 0.5*ln2 78 fdivp // (2*|x|^2)/(1-|x|) : 2*|x| : 0.5*ln2
79 faddp // 2*|x|+(2*|x|^2)/(1-|x|) : 0.5*ln2 79 faddp // 2*|x|+(2*|x|^2)/(1-|x|) : 0.5*ln2
80 fcoml MO(limit) // 2*|x|+(2*|x|^2)/(1-|x|) : 0.5*ln2 80 fcoml MO(limit) // 2*|x|+(2*|x|^2)/(1-|x|) : 0.5*ln2
81 fnstsw // 2*|x|+(2*|x|^2)/(1-|x|) : 0.5*ln2 81 fnstsw // 2*|x|+(2*|x|^2)/(1-|x|) : 0.5*ln2
82 sahf 82 sahf
83 jae 4f 83 jae 4f
84 fyl2xp1 // 0.5*ln2*ld(1+2*|x|+(2*|x|^2)/(1-|x|)) 84 fyl2xp1 // 0.5*ln2*ld(1+2*|x|+(2*|x|^2)/(1-|x|))
85 jecxz 3f 85 jecxz 3f
86 fchs // 0.5*ln2*ld(1+2*x+(2*x^2)/(1-x)) 86 fchs // 0.5*ln2*ld(1+2*x+(2*x^2)/(1-x))
87 3:» ret 87 3:» NACLRET
88 88
89 .align ALIGNARG(4) 89 .align ALIGNARG(4)
90 4: faddl MO(one) // 1+2*|x|+(2*|x|^2)/(1-|x|) : 0.5*ln2 90 4: faddl MO(one) // 1+2*|x|+(2*|x|^2)/(1-|x|) : 0.5*ln2
91 fyl2x // 0.5*ln2*ld(1+2*|x|+(2*|x|^2)/(1-|x|)) 91 fyl2x // 0.5*ln2*ld(1+2*|x|+(2*|x|^2)/(1-|x|))
92 jecxz 3f 92 jecxz 3f
93 fchs // 0.5*ln2*ld(1+2*x+(2*x^2)/(1-x)) 93 fchs // 0.5*ln2*ld(1+2*x+(2*x^2)/(1-x))
94 3:» ret 94 3:» NACLRET
95 95
96 .align ALIGNARG(4) 96 .align ALIGNARG(4)
97 2: faddl MO(one) // 1+|x| : |x| : 0.5*ln2 97 2: faddl MO(one) // 1+|x| : |x| : 0.5*ln2
98 fxch // |x| : 1+|x| : 0.5*ln2 98 fxch // |x| : 1+|x| : 0.5*ln2
99 fsubrl MO(one) // 1-|x| : 1+|x| : 0.5*ln2 99 fsubrl MO(one) // 1-|x| : 1+|x| : 0.5*ln2
100 fdivrp // (1+|x|)/(1-|x|) : 0.5*ln2 100 fdivrp // (1+|x|)/(1-|x|) : 0.5*ln2
101 fyl2x // 0.5*ln2*ld((1+|x|)/(1-|x|)) 101 fyl2x // 0.5*ln2*ld((1+|x|)/(1-|x|))
102 jecxz 3f 102 jecxz 3f
103 fchs // 0.5*ln2*ld((1+x)/(1-x)) 103 fchs // 0.5*ln2*ld((1+x)/(1-x))
104 3:» ret 104 3:» NACLRET
105 105
106 // x == NaN 106 // x == NaN
107 5: flds 4(%esp) 107 5: flds 4(%esp)
108 » ret 108 » NACLRET
109 END(__ieee754_atanhf) 109 END(__ieee754_atanhf)
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