diff options
Diffstat (limited to 'mpc/tests/tfma.c')
-rw-r--r-- | mpc/tests/tfma.c | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/mpc/tests/tfma.c b/mpc/tests/tfma.c new file mode 100644 index 0000000000..81bc167fe4 --- /dev/null +++ b/mpc/tests/tfma.c @@ -0,0 +1,107 @@ +/* tfma -- test file for mpc_fma. + +Copyright (C) 2011, 2012 INRIA + +This file is part of GNU MPC. + +GNU MPC is free software; you can redistribute it and/or modify it under +the terms of the GNU Lesser General Public License as published by the +Free Software Foundation; either version 3 of the License, or (at your +option) any later version. + +GNU MPC is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for +more details. + +You should have received a copy of the GNU Lesser General Public License +along with this program. If not, see http://www.gnu.org/licenses/ . +*/ + +#include "mpc-tests.h" + +static void +cmpfma (mpc_srcptr a, mpc_srcptr b, mpc_srcptr c, mpc_rnd_t rnd) + /* computes a*b+c with the naive and fast functions using the rounding + mode rnd and compares the results and return values. + In our current test suite, all input precisions are the same, and we + use this precision also for the result. + */ +{ + mpc_t z, t; + int inex_z, inex_t; + + mpc_init2 (z, MPC_MAX_PREC (a)); + mpc_init2 (t, MPC_MAX_PREC (a)); + + inex_z = mpc_fma_naive (z, a, b, c, rnd); + inex_t = mpc_fma (t, a, b, c, rnd); + + if (mpc_cmp (z, t) != 0 || inex_z != inex_t) { + fprintf (stderr, "fma_naive and fma differ for rnd=(%s,%s)\n", + mpfr_print_rnd_mode(MPC_RND_RE(rnd)), + mpfr_print_rnd_mode(MPC_RND_IM(rnd))); + MPC_OUT (a); + MPC_OUT (b); + MPC_OUT (c); + MPC_OUT (z); + MPC_OUT (t); + if (inex_z != inex_t) { + fprintf (stderr, "inex_re (z): %s\n", MPC_INEX_STR (inex_z)); + fprintf (stderr, "inex_re (t): %s\n", MPC_INEX_STR (inex_t)); + } + exit (1); + } + + mpc_clear (z); + mpc_clear (t); +} + + +static void +check_random (void) +{ + mpfr_prec_t prec; + int rnd_re, rnd_im; + mpc_t a, b, c; + + mpc_init2 (a, 1000); + mpc_init2 (b, 1000); + mpc_init2 (c, 1000); + + for (prec = 2; prec < 1000; prec = (mpfr_prec_t) (prec * 1.1 + 1)) { + mpc_set_prec (a, prec); + mpc_set_prec (b, prec); + mpc_set_prec (c, prec); + + test_default_random (a, -1024, 1024, 128, 0); + test_default_random (b, -1024, 1024, 128, 0); + test_default_random (c, -1024, 1024, 128, 0); + + for (rnd_re = 0; rnd_re < 4; rnd_re ++) + for (rnd_im = 0; rnd_im < 4; rnd_im ++) + cmpfma (a, b, c, MPC_RND (rnd_re, rnd_im)); + } + + mpc_clear (a); + mpc_clear (b); + mpc_clear (c); +} + + +int +main (void) +{ + DECL_FUNC (CCCC, f, mpc_fma); + + test_start (); + + check_random (); + + data_check (f, "fma.dat"); + tgeneric (f, 2, 1024, 1, 256); + + test_end (); + + return 0; +} |