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      1 /* exceptions -- test file for exceptions
      2 
      3 Copyright (C) 2015 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 /* Return non-zero if 'rnd' rounds towards zero, for a number of sign 'sgn' */
     24 #define MPC_IS_LIKE_RNDZ(rnd, sgn) \
     25   ((rnd==MPFR_RNDZ) || (sgn<0 && rnd==MPFR_RNDU) || (sgn>0 && rnd==MPFR_RNDD))
     26 
     27 #define MPFR_SGN(x) (mpfr_signbit (x) ? -1 : 1)
     28 
     29 static void
     30 foo (int f(mpc_ptr, mpc_srcptr, mpc_rnd_t), char *s)
     31 {
     32   mpc_t z, t;
     33   int rnd_re, rnd_im, rnd;
     34 #define N 5
     35   mpfr_exp_t exy[N][2] = {{200, 800}, {800, 200}, {-50, 50}, {-10, 1000},
     36                           {0, 1000}};
     37   int n, inex, inex_re, inex_im, sgn;
     38 
     39   mpc_init2 (z, MPFR_PREC_MIN);
     40   mpc_init2 (t, MPFR_PREC_MIN);
     41   for (n = 0; n < N; n++)
     42     for (sgn = 0; sgn < 4; sgn++)
     43     {
     44       if (exy[n][0])
     45         mpfr_set_ui_2exp (mpc_realref (z), 1, exy[n][0], MPFR_RNDN);
     46       else
     47         mpfr_set_ui (mpc_realref (z), 0, MPFR_RNDN);
     48       if (sgn & 1)
     49         mpfr_neg (mpc_realref (z), mpc_realref (z), MPFR_RNDN);
     50       if (exy[n][1])
     51         mpfr_set_ui_2exp (mpc_imagref (z), 1, exy[n][1], MPFR_RNDN);
     52       else
     53         mpfr_set_ui (mpc_imagref (z), 0, MPFR_RNDN);
     54       if (sgn & 2)
     55         mpfr_neg (mpc_imagref (z), mpc_imagref (z), MPFR_RNDN);
     56 
     57       inex = f (t, z, MPC_RNDZZ);
     58       inex_re = MPC_INEX_RE(inex);
     59       inex_im = MPC_INEX_IM(inex);
     60 
     61       if (inex_re != 0 && mpfr_inf_p (mpc_realref (t)))
     62         {
     63           fprintf (stderr, "Error, wrong real part with rounding towards zero\n");
     64           fprintf (stderr, "f = %s\n", s);
     65           fprintf (stderr, "z=");
     66           mpc_out_str (stderr, 2, 0, z, MPC_RNDNN);
     67           fprintf (stderr, "\nt=");
     68           mpc_out_str (stderr, 2, 0, t, MPC_RNDNN);
     69           fprintf (stderr, "\n");
     70           exit (1);
     71         }
     72 
     73       if (inex_im != 0 && mpfr_inf_p (mpc_imagref (t)))
     74         {
     75           fprintf (stderr, "Error, wrong imag part with rounding towards zero\n");
     76           fprintf (stderr, "f = %s\n", s);
     77           fprintf (stderr, "z=");
     78           mpc_out_str (stderr, 2, 0, z, MPC_RNDNN);
     79           fprintf (stderr, "\nt=");
     80           mpc_out_str (stderr, 2, 0, t, MPC_RNDNN);
     81           fprintf (stderr, "\n");
     82           exit (1);
     83         }
     84 
     85       rnd_re = mpfr_signbit (mpc_realref (t)) == 0 ? MPFR_RNDU : MPFR_RNDD;
     86       rnd_im = mpfr_signbit (mpc_imagref (t)) == 0 ? MPFR_RNDU : MPFR_RNDD;
     87       rnd = MPC_RND(rnd_re,rnd_im); /* round away */
     88 
     89       inex = f (t, z, rnd);
     90       inex_re = MPC_INEX_RE(inex);
     91       inex_im = MPC_INEX_IM(inex);
     92 
     93       if (inex_re != 0 && mpfr_zero_p (mpc_realref (t)))
     94         {
     95           fprintf (stderr, "Error, wrong real part with rounding away from zero\n");
     96           fprintf (stderr, "f = %s\n", s);
     97           fprintf (stderr, "z=");
     98           mpc_out_str (stderr, 2, 0, z, MPC_RNDNN);
     99           fprintf (stderr, "\nt=");
    100           mpc_out_str (stderr, 2, 0, t, MPC_RNDNN);
    101           fprintf (stderr, "\n");
    102           fprintf (stderr, "rnd=%s\n", mpfr_print_rnd_mode (rnd_re));
    103           exit (1);
    104         }
    105 
    106       if (inex_im != 0 && mpfr_zero_p (mpc_imagref (t)))
    107         {
    108           fprintf (stderr, "Error, wrong imag part with rounding away from zero\n");
    109           fprintf (stderr, "f = %s\n", s);
    110           fprintf (stderr, "z=");
    111           mpc_out_str (stderr, 2, 0, z, MPC_RNDNN);
    112           fprintf (stderr, "\nt=");
    113           mpc_out_str (stderr, 2, 0, t, MPC_RNDNN);
    114           fprintf (stderr, "\n");
    115           fprintf (stderr, "rnd=%s\n", mpfr_print_rnd_mode (rnd_im));
    116           exit (1);
    117         }
    118     }
    119 
    120   mpc_clear (z);
    121   mpc_clear (t);
    122 }
    123 
    124 int
    125 main (void)
    126 {
    127   test_start ();
    128 
    129   foo (mpc_sqr, "sqr");
    130   foo (mpc_conj, "conj");
    131   foo (mpc_neg, "neg");
    132   foo (mpc_sqrt, "sqrt");
    133   foo (mpc_set, "set");
    134   foo (mpc_proj, "proj");
    135   foo (mpc_exp, "exp");
    136   foo (mpc_exp, "exp");
    137   foo (mpc_log, "log");
    138   foo (mpc_log10, "log10");
    139   foo (mpc_sin, "sin");
    140   foo (mpc_cos, "cos");
    141   foo (mpc_tan, "tan");
    142   foo (mpc_sinh, "sinh");
    143   foo (mpc_cosh, "cosh");
    144   foo (mpc_tanh, "tanh");
    145   foo (mpc_asin, "asin");
    146   foo (mpc_acos, "acos");
    147   foo (mpc_atan, "atan");
    148   foo (mpc_asinh, "asinh");
    149   foo (mpc_acosh, "acosh");
    150   foo (mpc_atanh, "atanh");
    151 
    152   test_end ();
    153 
    154   return 0;
    155 }
    156