40 lines
1.2 KiB
C
40 lines
1.2 KiB
C
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/* long double square root in software floating-point emulation.
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Copyright (C) 2022 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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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 <stdlib.h>
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#include <soft-fp/soft-fp.h>
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#include <soft-fp/quad.h>
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#include <libm-alias-finite.h>
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long double
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__ieee754_sqrtl (const long double 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 (C);
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long double c;
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FP_INIT_ROUNDMODE;
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FP_UNPACK_Q (A, a);
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FP_SQRT_Q (C, A);
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FP_PACK_Q (c, C);
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FP_HANDLE_EXCEPTIONS;
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return c;
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}
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libm_alias_finite (__ieee754_sqrtl, __sqrtl)
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