| 1 | /* Software floating-point emulation. |
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| 2 | (*c) = sqrtl(*a) |
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| 3 | Copyright (C) 1997-2024 Free Software Foundation, Inc. |
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| 4 | This file is part of the GNU C Library. |
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| 5 | |
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| 6 | The GNU C Library is free software; you can redistribute it and/or |
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| 7 | modify it under the terms of the GNU Lesser General Public |
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| 8 | License as published by the Free Software Foundation; either |
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| 9 | version 2.1 of the License, or (at your option) any later version. |
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| 10 | |
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| 11 | The GNU C Library is distributed in the hope that it will be useful, |
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| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 14 | Lesser General Public License for more details. |
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| 15 | |
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| 16 | You should have received a copy of the GNU Lesser General Public |
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| 17 | License along with the GNU C Library; if not, see |
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| 18 | <https://www.gnu.org/licenses/>. */ |
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| 19 | |
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| 20 | #include "soft-fp.h" |
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| 21 | #include "quad.h" |
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| 22 | |
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| 23 | void _Qp_sqrt(long double *c, const long double *a) |
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| 24 | { |
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| 25 | FP_DECL_EX; |
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| 26 | FP_DECL_Q(A); FP_DECL_Q(C); |
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| 27 | |
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| 28 | FP_INIT_ROUNDMODE; |
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| 29 | FP_UNPACK_QP(A, a); |
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| 30 | FP_SQRT_Q(C, A); |
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| 31 | FP_PACK_QP(c, C); |
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| 32 | QP_HANDLE_EXCEPTIONS(__asm ( |
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| 33 | " ldd [%1], %%f52\n" |
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| 34 | " ldd [%1+8], %%f54\n" |
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| 35 | " fsqrtq %%f52, %%f60\n" |
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| 36 | " std %%f60, [%0]\n" |
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| 37 | " std %%f62, [%0+8]\n" |
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| 38 | " " : : "r" (c), "r" (a) : QP_CLOBBER)); |
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| 39 | } |
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| 40 | |
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