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/* mpc_inp_str -- Input a complex number from a given stream.
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 <stdio.h>
#include <ctype.h>
#include "gmp.h"
#include "mpfr.h"
#include "mpc.h"
size_t
mpc_inp_str (mpc_ptr rop, FILE *stream, int base, mpc_rnd_t rnd_mode)
{
size_t size, size_im;
int c;
int sign;
if (stream == NULL)
stream = stdin;
/* input real part */
size = mpfr_inp_str (MPC_RE(rop), stream, base, MPC_RND_RE(rnd_mode));
if (size == 0) /* error while reading the real part */
return 0;
/* get 'i' or 'I' followed by '*' */
do
{
c = getc (stream);
size ++;
}
while (isspace (c));
switch (c)
{
case '+':
sign = 0;
break;
case '-':
sign = 1;
break;
default:
/* error */
return 0;
}
c = getc (stream);
size ++;
if (c != 'I' && c != 'i')
return 0; /* error */
c = getc (stream);
size ++;
if (c != '*')
return 0; /* error */
size_im = mpfr_inp_str (MPC_IM(rop), stream, base, MPC_RND_IM(rnd_mode));
if (size_im == 0) /* error while reading the imaginary part */
return 0;
if (sign)
mpfr_setsign (MPC_IM (rop), MPC_IM (rop), sign, GMP_RNDN);
return size + size_im;
}
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