1 /* mpc_pow_ld -- Raise a complex number to a long double 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 LDBL_MANT_DIG */ 23 #include "mpc-impl.h" 24 25 int 26 mpc_pow_ld (mpc_ptr z, mpc_srcptr x, long 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, LDBL_MANT_DIG, MPFR_PREC_MIN); 33 mpc_set_ld (yy, y, MPC_RNDNN); /* exact */ 34 inex = mpc_pow (z, x, yy, rnd); 35 mpc_clear (yy); 36 return inex; 37 } 38 39