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Port a lot more code to AARCH64
- Introduce epoll_pwait() - Rewrite -ftrapv and ffs() libraries in C code - Use more FreeBSD code in math function library - Get significantly more tests passing on qemu-aarch64 - Fix many Musl long double functions that were broken on AARCH64
This commit is contained in:
Justine Tunney
parent
91791e9f38
commit
550b52abf6
158 changed files with 6018 additions and 3499 deletions
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@ -2,60 +2,108 @@
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│vi: set et ft=c ts=8 tw=8 fenc=utf-8 :vi│
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╚──────────────────────────────────────────────────────────────────────────────╝
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│ │
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│ Musl Libc │
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│ Copyright © 2005-2014 Rich Felker, et al. │
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│ FreeBSD lib/msun/src/e_acoshl.c │
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│ Converted to ldbl by David Schultz <das@FreeBSD.ORG> and Bruce D. Evans. │
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│ │
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│ Permission is hereby granted, free of charge, to any person obtaining │
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│ a copy of this software and associated documentation files (the │
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│ "Software"), to deal in the Software without restriction, including │
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│ without limitation the rights to use, copy, modify, merge, publish, │
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│ distribute, sublicense, and/or sell copies of the Software, and to │
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│ permit persons to whom the Software is furnished to do so, subject to │
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│ the following conditions: │
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│ Copyright (c) 1992-2023 The FreeBSD Project. │
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│ │
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│ The above copyright notice and this permission notice shall be │
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│ included in all copies or substantial portions of the Software. │
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│ Redistribution and use in source and binary forms, with or without │
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│ modification, are permitted provided that the following conditions │
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│ are met: │
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│ 1. Redistributions of source code must retain the above copyright │
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│ notice, this list of conditions and the following disclaimer. │
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│ 2. Redistributions in binary form must reproduce the above copyright │
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│ notice, this list of conditions and the following disclaimer in the │
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│ documentation and/or other materials provided with the distribution. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, │
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│ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF │
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│ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. │
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│ IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY │
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│ CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, │
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│ TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE │
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│ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. │
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│ THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND │
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│ ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE │
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│ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE │
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│ ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE │
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│ FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL │
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│ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS │
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│ OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) │
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│ HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT │
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│ LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY │
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│ OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF │
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│ SUCH DAMAGE. │
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│ │
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│ Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. │
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│ Developed at SunPro, a Sun Microsystems, Inc. business. │
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│ Permission to use, copy, modify, and distribute this │
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│ software is freely granted, provided that this notice │
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│ is preserved. │
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│ │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/math.h"
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#include "libc/tinymath/ldshape.internal.h"
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#include "libc/tinymath/freebsd.internal.h"
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asm(".ident\t\"\\n\\n\
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Musl libc (MIT License)\\n\
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Copyright 2005-2014 Rich Felker, et. al.\"");
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FreeBSD libm (BSD-2 License)\\n\
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Copyright (c) 2005-2011, Bruce D. Evans, Steven G. Kargl, David Schultz.\"");
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asm(".ident\t\"\\n\\n\
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fdlibm (fdlibm license)\\n\
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Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.\"");
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asm(".include \"libc/disclaimer.inc\"");
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// clang-format off
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/* EXP_LARGE is the threshold above which we use acosh(x) ~= log(2x). */
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#if LDBL_MANT_DIG == 64
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#define EXP_LARGE 34
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#elif LDBL_MANT_DIG == 113
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#define EXP_LARGE 58
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#else
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#error "Unsupported long double format"
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#endif
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#if LDBL_MAX_EXP != 0x4000
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/* We also require the usual expsign encoding. */
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#error "Unsupported long double format"
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#endif
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#define BIAS (LDBL_MAX_EXP - 1)
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static const double
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one = 1.0;
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#if LDBL_MANT_DIG == 64
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static const union IEEEl2bits
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u_ln2 = LD80C(0xb17217f7d1cf79ac, -1, 6.93147180559945309417e-1L);
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#define ln2 u_ln2.e
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#elif LDBL_MANT_DIG == 113
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static const long double
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ln2 = 6.93147180559945309417232121458176568e-1L; /* 0x162e42fefa39ef35793c7673007e6.0p-113 */
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#else
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#error "Unsupported long double format"
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#endif
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/**
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* Returns inverse hyperbolic cosine of 𝑥.
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* @define acosh(x) = log(x + sqrt(x*x-1))
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*/
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long double acoshl(long double x) {
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#if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
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return acosh(x);
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#elif LDBL_MANT_DIG == 64 && LDBL_MAX_EXP == 16384
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union ldshape u = {x};
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int e = u.i.se & 0x7fff;
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long double
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acoshl(long double x)
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{
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long double t;
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int16_t hx;
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if (e < 0x3fff + 1)
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/* |x| < 2, invalid if x < 1 or nan */
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return log1pl(x-1 + sqrtl((x-1)*(x-1)+2*(x-1)));
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if (e < 0x3fff + 32)
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/* |x| < 0x1p32 */
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return logl(2*x - 1/(x+sqrtl(x*x-1)));
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return logl(x) + 0.693147180559945309417232121458176568L;
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#elif LDBL_MANT_DIG == 113 && LDBL_MAX_EXP == 16384
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// TODO: broken implementation to make things compile
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return acosh(x);
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#else
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#error "architecture unsupported"
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#endif
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ENTERI();
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GET_LDBL_EXPSIGN(hx, x);
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if (hx < 0x3fff) { /* x < 1, or misnormal */
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RETURNI((x-x)/(x-x));
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} else if (hx >= BIAS + EXP_LARGE) { /* x >= LARGE */
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if (hx >= 0x7fff) { /* x is inf, NaN or misnormal */
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RETURNI(x+x);
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} else {
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RETURNI(logl(x)+ln2); /* acosh(huge)=log(2x), or misnormal */
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}
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} else if (hx == 0x3fff && x == 1) {
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RETURNI(0.0); /* acosh(1) = 0 */
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} else if (hx >= 0x4000) { /* LARGE > x >= 2, or misnormal */
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t=x*x;
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RETURNI(logl(2.0*x-one/(x+sqrtl(t-one))));
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} else { /* 1<x<2 */
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t = x-one;
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RETURNI(log1pl(t+sqrtl(2.0*t+t*t)));
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}
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}
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