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67236aeb6e
This patch contains the miscellaneous math routines and headers we have
implemented for RISC-V. This includes things from <math.h> that aren't
completely ISA-generic, floating-point bit manipulation, and soft-fp
hooks.
2018-01-29 Palmer Dabbelt <palmer@sifive.com>
* sysdeps/riscv/bits/fenv.h: New file.
* sysdeps/riscv/e_sqrtl.c: Likewise.
* sysdeps/riscv/fpu_control.h: Likewise.
* sysdeps/riscv/math-tests.h: Likewise.
* sysdeps/riscv/nofpu/Implies: Likewise.
* sysdeps/riscv/sfp-machine.h: Likewise.
* sysdeps/riscv/tininess.h: Likewise.
38 lines
1.2 KiB
C
38 lines
1.2 KiB
C
/* long double square root in software floating-point emulation.
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Copyright (C) 1997-2018 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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<http://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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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); 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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strong_alias (__ieee754_sqrtl, __sqrtl_finite)
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