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      1 /* tui_div -- test file for mpc_ui_div.
      2 
      3 Copyright (C) 2008, 2011, 2012, 2013 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 "mpc-tests.h"
     22 
     23 static void
     24 test_special (void)
     25 {
     26   mpc_t a, b;
     27 
     28   mpc_init2 (a, 10);
     29   mpc_init2 (b, 10);
     30 
     31   mpc_set_ui_ui (a, 2, 4, MPC_RNDNN);
     32   mpc_ui_div (b, 10, a, MPC_RNDNN);
     33   if (mpc_cmp_si_si (b, 1, -2) != 0)
     34     {
     35       printf ("10/(2,4) failed\n");
     36       printf ("expected (1,-2)\n");
     37       printf ("got      ");
     38       mpc_out_str (stdout, 10, 0, b, MPC_RNDNN);
     39       printf ("\n");
     40       exit (1);
     41     }
     42 
     43   /* 0/(-1-0*I) should give (-0, +0) */
     44   mpfr_set_str (mpc_realref(a), "-1", 10, MPFR_RNDN);
     45   mpfr_set_str (mpc_imagref(a), "-0", 10, MPFR_RNDN);
     46   mpc_ui_div (b, 0, a, MPC_RNDNN);
     47   if ((mpc_cmp_si_si (b, 0, 0) != 0) || (MPFR_SIGN (mpc_realref(b)) > 0)
     48       || (MPFR_SIGN (mpc_imagref(b)) < 0))
     49     {
     50       printf ("0/(-1,-0) failed\n");
     51       printf ("expected (-0,+0)\n");
     52       printf ("got      ");
     53       mpc_out_str (stdout, 10, 0, b, MPC_RNDNN);
     54       printf ("\n");
     55       exit (1);
     56     }
     57 
     58   mpc_set_ui_ui (a, 1, 0, MPC_RNDNN);
     59   mpc_ui_div (b, 1, a, MPC_RNDNN);
     60   if (mpc_cmp_si_si (b, 1, 0) != 0)
     61     {
     62       printf ("1/(1,0) failed\n");
     63       printf ("expected (1,0)\n");
     64       printf ("got      ");
     65       mpc_out_str (stdout, 10, 0, b, MPC_RNDNN);
     66       printf ("\n");
     67       exit (1);
     68     }
     69 
     70   /* problem reported by Timo Hartmann with mpc-0.7, 21 Oct 2009 */
     71   mpc_set_ui_ui (a, 4, 0, MPC_RNDNN);
     72   mpc_ui_div (b, 1, a, MPC_RNDNN);
     73   if (mpfr_cmp_ui_2exp (mpc_realref(b), 1, -2) != 0 ||
     74       mpfr_cmp_ui (mpc_imagref(b), 0) != 0 || mpfr_signbit (mpc_imagref(b)) != 0)
     75     {
     76       printf ("1/(4,0) failed\n");
     77       printf ("expected (1/4,0)\n");
     78       printf ("got      ");
     79       mpc_out_str (stdout, 10, 0, b, MPC_RNDNN);
     80       printf ("\n");
     81       exit (1);
     82     }
     83 
     84   mpc_clear (a);
     85   mpc_clear (b);
     86 }
     87 
     88 #define MPC_FUNCTION_CALL                                               \
     89   P[0].mpc_inex = mpc_ui_div (P[1].mpc, P[2].ui, P[3].mpc, P[4].mpc_rnd)
     90 #define MPC_FUNCTION_CALL_REUSE_OP2                                     \
     91   P[0].mpc_inex = mpc_ui_div (P[1].mpc, P[2].ui, P[1].mpc, P[4].mpc_rnd)
     92 
     93 #include "tgeneric.tpl"
     94 
     95 int
     96 main (void)
     97 {
     98   test_start ();
     99 
    100   test_special ();
    101 
    102   tgeneric_template ("ui_div.dsc", 2, 1024, 7, 4096);
    103 
    104   test_end ();
    105 
    106   return 0;
    107 }
    108