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220622dde5
This patch adds a new macro, libm_alias_finite, to define all _finite symbol. It sets all _finite symbol as compat symbol based on its first version (obtained from the definition at built generated first-versions.h). The <fn>f128_finite symbols were introduced in GLIBC 2.26 and so need special treatment in code that is shared between long double and float128. It is done by adding a list, similar to internal symbol redifinition, on sysdeps/ieee754/float128/float128_private.h. Alpha also needs some tricky changes to ensure we still emit 2 compat symbols for sqrt(f). Passes buildmanyglibc. Co-authored-by: Adhemerval Zanella <adhemerval.zanella@linaro.org> Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
58 lines
1.9 KiB
C
58 lines
1.9 KiB
C
/* soft-fp sqrt for _Float128
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Return sqrt(a)
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Copyright (C) 2017-2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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In addition to the permissions in the GNU Lesser General Public
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License, the Free Software Foundation gives you unlimited
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permission to link the compiled version of this file into
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combinations with other programs, and to distribute those
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combinations without any restriction coming from the use of this
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file. (The Lesser General Public License restrictions do apply in
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other respects; for example, they cover modification of the file,
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and distribution when not linked into a combine executable.)
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <math.h>
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#include <libm-alias-finite.h>
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/* Unavoidable hacks since TFmode is assumed to be binary128 when
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-mabi=ibmlongdouble is used. */
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#if __HAVE_FLOAT128_UNLIKE_LDBL
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# define TFtype KFtype
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# define TF KF
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#endif
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#include <soft-fp.h>
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#include <quad.h>
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__float128
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__ieee754_sqrtf128 (__float128 a)
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{
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FP_DECL_EX;
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FP_DECL_Q (A);
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FP_DECL_Q (R);
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__float128 r;
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FP_INIT_ROUNDMODE;
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FP_UNPACK_Q (A, a);
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FP_SQRT_Q (R, A);
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FP_PACK_Q (r, R);
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FP_HANDLE_EXCEPTIONS;
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return r;
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}
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libm_alias_finite (__ieee754_sqrtf128, __sqrtf128)
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