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/* mpc_random -- Generate a random complex number.
Copyright (C) 2002 Andreas Enge, Paul Zimmermann
This file is part of the MPC Library.
The MPC 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 MPC 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 MPC Library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
MA 02111-1307, USA. */
#include "gmp.h"
#include "mpfr.h"
#include "mpc.h"
#include "mpc-impl.h"
void
mpc_random (mpc_ptr a)
{
mpfr_set_prec (MPC_RE (a), MPFR_PREC (MPC_RE (a)) + 1);
mpfr_random (MPC_RE(a));
mpfr_mul_2ui (MPC_RE (a), MPC_RE (a), 1, GMP_RNDN);
mpfr_sub_ui (MPC_RE (a), MPC_RE (a), 1, GMP_RNDN);
mpfr_round_prec (MPC_RE (a), GMP_RNDZ, MPFR_PREC (MPC_RE (a)) - 1);
mpfr_set_prec (MPC_IM (a), MPFR_PREC (MPC_IM (a)) + 1);
mpfr_random (MPC_IM(a));
mpfr_mul_2ui (MPC_IM (a), MPC_IM (a), 1, GMP_RNDN);
mpfr_sub_ui (MPC_IM (a), MPC_IM (a), 1, GMP_RNDN);
mpfr_round_prec (MPC_IM (a), GMP_RNDZ, MPFR_PREC (MPC_IM (a)) - 1);
}
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