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[thirdparty/glibc.git] / sysdeps / mips / mips64 / e_sqrtl.c

/* long double square root in software floating-point emulation.
   Copyright (C) 1997-2024 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library.  If not, see
   <https://www.gnu.org/licenses/>.  */

#include <stdlib.h>
#include <soft-fp.h>
#include <quad.h>
#include <libm-alias-finite.h>

long double
__ieee754_sqrtl (const long double a)
{
  FP_DECL_EX;
  FP_DECL_Q(A); FP_DECL_Q(C);
  long double c;

  FP_INIT_ROUNDMODE;
  FP_UNPACK_Q(A, a);
  FP_SQRT_Q(C, A);
  FP_PACK_Q(c, C);
  FP_HANDLE_EXCEPTIONS;
  return c;
}
libm_alias_finite (__ieee754_sqrtl, __sqrtl)