1 /* tui_div -- test file for mpc_ui_div. 2 3 Copyright (C) 2008, 2011 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 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, GMP_RNDN); 45 mpfr_set_str (mpc_imagref(a), "-0", 10, GMP_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 int 89 main (void) 90 { 91 DECL_FUNC (CUC, f, mpc_ui_div); 92 93 test_start (); 94 95 special (); 96 97 tgeneric (f, 2, 1024, 7, 4096); 98 99 test_end (); 100 101 return 0; 102 } 103