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      1 /* mpc_pow_d -- Raise a complex number to a double-precision power.
      2 
      3 Copyright (C) 2009 INRIA
      4 
      5 This file is part of GNU MPC.
      6 
      7 GNU MPC is free software; you can redistribute it and/or modify it under
      8 the terms of the GNU Lesser General Public License as published by the
      9 Free Software Foundation; either version 3 of the License, or (at your
     10 option) any later version.
     11 
     12 GNU MPC is distributed in the hope that it will be useful, but WITHOUT ANY
     13 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
     14 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
     15 more details.
     16 
     17 You should have received a copy of the GNU Lesser General Public License
     18 along with this program. If not, see http://www.gnu.org/licenses/ .
     19 */
     20 
     21 #include <stdio.h>    /* for MPC_ASSERT */
     22 #include <float.h>    /* for DBL_MANT_DIG */
     23 #include "mpc-impl.h"
     24 
     25 int
     26 mpc_pow_d (mpc_ptr z, mpc_srcptr x, double y, mpc_rnd_t rnd)
     27 {
     28   mpc_t yy;
     29   int inex;
     30 
     31   MPC_ASSERT(FLT_RADIX == 2);
     32   mpc_init3 (yy, DBL_MANT_DIG, MPFR_PREC_MIN);
     33   mpc_set_d (yy, y, MPC_RNDNN);   /* exact */
     34   inex = mpc_pow (z, x, yy, rnd);
     35   mpc_clear (yy);
     36   return inex;
     37 }
     38 
     39