1 /* tfma -- test file for mpc_fma. 2 3 Copyright (C) 2011, 2012 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 cmpfma (mpc_srcptr a, mpc_srcptr b, mpc_srcptr c, mpc_rnd_t rnd) 25 /* computes a*b+c with the naive and fast functions using the rounding 26 mode rnd and compares the results and return values. 27 In our current test suite, all input precisions are the same, and we 28 use this precision also for the result. 29 */ 30 { 31 mpc_t z, t; 32 int inex_z, inex_t; 33 34 mpc_init2 (z, MPC_MAX_PREC (a)); 35 mpc_init2 (t, MPC_MAX_PREC (a)); 36 37 inex_z = mpc_fma_naive (z, a, b, c, rnd); 38 inex_t = mpc_fma (t, a, b, c, rnd); 39 40 if (mpc_cmp (z, t) != 0 || inex_z != inex_t) { 41 fprintf (stderr, "fma_naive and fma differ for rnd=(%s,%s)\n", 42 mpfr_print_rnd_mode(MPC_RND_RE(rnd)), 43 mpfr_print_rnd_mode(MPC_RND_IM(rnd))); 44 MPC_OUT (a); 45 MPC_OUT (b); 46 MPC_OUT (c); 47 MPC_OUT (z); 48 MPC_OUT (t); 49 if (inex_z != inex_t) { 50 fprintf (stderr, "inex_re (z): %s\n", MPC_INEX_STR (inex_z)); 51 fprintf (stderr, "inex_re (t): %s\n", MPC_INEX_STR (inex_t)); 52 } 53 exit (1); 54 } 55 56 mpc_clear (z); 57 mpc_clear (t); 58 } 59 60 61 static void 62 check_random (void) 63 { 64 mpfr_prec_t prec; 65 int rnd_re, rnd_im; 66 mpc_t a, b, c; 67 68 mpc_init2 (a, 1000); 69 mpc_init2 (b, 1000); 70 mpc_init2 (c, 1000); 71 72 for (prec = 2; prec < 1000; prec = (mpfr_prec_t) (prec * 1.1 + 1)) { 73 mpc_set_prec (a, prec); 74 mpc_set_prec (b, prec); 75 mpc_set_prec (c, prec); 76 77 test_default_random (a, -1024, 1024, 128, 0); 78 test_default_random (b, -1024, 1024, 128, 0); 79 test_default_random (c, -1024, 1024, 128, 0); 80 81 for (rnd_re = 0; rnd_re < 4; rnd_re ++) 82 for (rnd_im = 0; rnd_im < 4; rnd_im ++) 83 cmpfma (a, b, c, MPC_RND (rnd_re, rnd_im)); 84 } 85 86 mpc_clear (a); 87 mpc_clear (b); 88 mpc_clear (c); 89 } 90 91 92 int 93 main (void) 94 { 95 DECL_FUNC (CCCC, f, mpc_fma); 96 97 test_start (); 98 99 check_random (); 100 101 data_check (f, "fma.dat"); 102 tgeneric (f, 2, 1024, 1, 256); 103 104 test_end (); 105 106 return 0; 107 } 108