1 /*=============================================================================
2 
3     This file is part of Antic.
4 
5     Antic is free software: you can redistribute it and/or modify it under
6     the terms of the GNU Lesser General Public License (LGPL) as published
7     by the Free Software Foundation; either version 2.1 of the License, or
8     (at your option) any later version. See <http://www.gnu.org/licenses/>.
9 
10 =============================================================================*/
11 /******************************************************************************
12 
13     Copyright (C) 2013 Fredrik Johansson
14     Copyright (C) 2015 William Hart
15 
16 ******************************************************************************/
17 
18 #include "nf_elem.h"
19 
nf_elem_print_pretty(const nf_elem_t a,const nf_t nf,const char * var)20 void nf_elem_print_pretty(const nf_elem_t a, const nf_t nf, const char * var)
21 {
22     if (nf->flag & NF_LINEAR)
23     {
24         const fmpz * const den = LNF_ELEM_DENREF(a);
25 		fmpz_print(LNF_ELEM_NUMREF(a));
26         if (!fmpz_is_one(den))
27 		{
28 		   flint_printf("/");
29 		   fmpz_print(LNF_ELEM_DENREF(a));
30 		}
31     } else if (nf->flag & NF_QUADRATIC)
32     {
33         const fmpz * const anum = QNF_ELEM_NUMREF(a);
34         const fmpz * const aden = QNF_ELEM_DENREF(a);
35         int den1 = fmpz_is_one(aden);
36 		int lead0 = fmpz_is_zero(anum + 1);
37 
38         if (!den1 && !lead0)
39 		   flint_printf("(");
40         if (!lead0)
41 		{
42 		   fmpz_print(anum + 1);
43 		   flint_printf("*%s", var);
44 		   if (fmpz_sgn(anum) >= 0)
45 		   printf("+");
46 		}
47         fmpz_print(anum);
48         if (!den1 && !lead0)
49 		   flint_printf(")");
50         if (!den1)
51 		{
52 		   flint_printf("/");
53 		   fmpz_print(aden);
54 		}
55     } else
56     {
57         fmpq_poly_print_pretty(NF_ELEM(a), var);
58     }
59 }
60 
61