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Diffstat (limited to 'mpc/tests/tpow.c')
-rw-r--r-- | mpc/tests/tpow.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/mpc/tests/tpow.c b/mpc/tests/tpow.c new file mode 100644 index 0000000000..3592209303 --- /dev/null +++ b/mpc/tests/tpow.c @@ -0,0 +1,71 @@ +/* tpow -- test file for mpc_pow. + +Copyright (C) 2009, 2011 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 +reuse_bug (void) +{ + /* bug found by the automatic builds on + http://hydra.nixos.org/build/1469029/log/raw */ + mpc_t x, y, z; + mp_prec_t prec = 2; + + for (prec = 2; prec <= 20; prec ++) + { + mpc_init2 (x, prec); + mpc_init2 (y, prec); + mpc_init2 (z, prec); + + mpfr_set_ui (mpc_realref (x), 0ul, GMP_RNDN); + mpfr_set_ui_2exp (mpc_imagref (x), 3ul, -2, GMP_RNDN); + mpc_set_ui (y, 8ul, MPC_RNDNN); + + mpc_pow (z, x, y, MPC_RNDNN); + mpc_pow (y, x, y, MPC_RNDNN); + if (mpfr_signbit (mpc_imagref (y)) != mpfr_signbit (mpc_imagref (z))) + { + printf ("Error: regression, reuse_bug reproduced\n"); + exit (1); + } + + mpc_clear (x); + mpc_clear (y); + mpc_clear (z); + } +} + + +int +main (void) +{ + DECL_FUNC (C_CC, f, mpc_pow); + + test_start (); + + reuse_bug (); + + data_check (f, "pow.dat"); + tgeneric (f, 2, 1024, 7, 10); + + test_end (); + + return 0; +} |