Blame sysdeps/ieee754/soft-fp/s_ddivl.c

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/* Divide long double (ldbl-128) values, narrowing the result to
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   double, using soft-fp.
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   Copyright (C) 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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#define f32xdivf64x __hide_f32xdivf64x
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#define f32xdivf128 __hide_f32xdivf128
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#define f64divf64x __hide_f64divf64x
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#define f64divf128 __hide_f64divf128
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#include <math.h>
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#undef f32xdivf64x
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#undef f32xdivf128
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#undef f64divf64x
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#undef f64divf128
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#include <math-narrow.h>
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#include <soft-fp.h>
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#include <double.h>
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#include <quad.h>
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double
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__ddivl (_Float128 x, _Float128 y)
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{
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  FP_DECL_EX;
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  FP_DECL_Q (X);
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  FP_DECL_Q (Y);
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  FP_DECL_Q (R);
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  FP_DECL_D (RN);
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  double ret;
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  FP_INIT_ROUNDMODE;
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  FP_UNPACK_Q (X, x);
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  FP_UNPACK_Q (Y, y);
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  FP_DIV_Q (R, X, Y);
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#if (2 * _FP_W_TYPE_SIZE) < _FP_FRACBITS_Q
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  FP_TRUNC_COOKED (D, Q, 2, 4, RN, R);
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#else
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  FP_TRUNC_COOKED (D, Q, 1, 2, RN, R);
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#endif
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  FP_PACK_D (ret, RN);
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  FP_HANDLE_EXCEPTIONS;
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  CHECK_NARROW_DIV (ret, x, y);
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  return ret;
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}
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libm_alias_double_ldouble (div)