diff options
Diffstat (limited to 'tests/mpcheck-template1.c')
| -rw-r--r-- | tests/mpcheck-template1.c | 55 |
1 files changed, 53 insertions, 2 deletions
diff --git a/tests/mpcheck-template1.c b/tests/mpcheck-template1.c index 3f05921..ee56e01 100644 --- a/tests/mpcheck-template1.c +++ b/tests/mpcheck-template1.c @@ -24,17 +24,65 @@ along with this program. If not, see http://www.gnu.org/licenses/ . #define TOSTRING(x) STRINGIFY(x) #define FUN CAT2(test_,FOO) +#define CHECK CAT2(check_,FOO) #define MPC_FOO CAT2(mpc_,FOO) #define CFOO CAT2(CAT2(c,FOO),SUFFIX) #define BAR TOSTRING(FOO) +#define EXTRA 20 + +/* routine to double-check result from MPC with more precision and without + reduced exponent range */ +static void +CHECK (mpc_t x, mpc_t z) +{ + mpfr_exp_t saved_emin = mpfr_get_emin (); + mpfr_exp_t saved_emax = mpfr_get_emax (); + mpfr_prec_t p = mpfr_get_prec (mpc_realref (x)), pp = p + EXTRA; + mpc_t t; + int ok, inex_re, inex_im; + + /* enlarge exponent range to the largest possible */ + mpfr_set_emin (mpfr_get_emin_min ()); + mpfr_set_emax (mpfr_get_emax_max ()); + + mpc_init2 (t, pp); + MPC_FOO (t, x, MPC_RNDNN); + inex_re = mpfr_prec_round (mpc_realref (t), p, MPFR_RNDN); + inex_im = mpfr_prec_round (mpc_imagref (t), p, MPFR_RNDN); + /* restore exponent range */ + mpfr_set_emin (saved_emin); + mpfr_set_emax (saved_emax); + inex_re = mpfr_check_range (mpc_realref (t), inex_re, MPFR_RNDN); + inex_re = mpfr_subnormalize (mpc_realref (t), inex_re, MPFR_RNDN); + inex_im = mpfr_check_range (mpc_imagref (t), inex_im, MPFR_RNDN); + inex_im = mpfr_subnormalize (mpc_imagref (t), inex_im, MPFR_RNDN); + + /* check real parts agree */ + ok = mpfr_agree (mpc_realref (z), mpc_realref (t), inex_re) + && mpfr_agree (mpc_imagref (z), mpc_imagref (t), inex_im); + + if (!ok) + { + mpfr_printf ("Potential bug in mpc_%s for x=(%Re,%Re)\n", BAR, + mpc_realref (x), mpc_imagref (x)); + mpfr_printf (" mpc_%s to precision %lu gives (%Re,%Re)\n", BAR, p, + mpc_realref (z), mpc_imagref (z)); + mpfr_printf (" mpc_%s to precision %lu gives (%Re,%Re)\n", BAR, pp, + mpc_realref (t), mpc_imagref (t)); + exit (1); + } + + mpc_clear (t); +} + static void FUN (mpfr_prec_t p, unsigned long n) { unsigned long i = 0; mpc_t x, z, t; TYPE complex xx, zz; - int inex; + int inex, cmp; unsigned long errors = 0, max_err_re = 0, max_err_im = 0; /* allow reduced exponent range */ #if defined(FOO_EMIN) || defined(FOO_EMAX) @@ -60,7 +108,8 @@ FUN (mpfr_prec_t p, unsigned long n) xx = mpc_get_type (x, MPC_RNDNN); zz = CFOO (xx); mpc_set_type (t, zz, MPFR_RNDN); - if (mpcheck_mpc_cmp (t, z) != 0) + cmp = mpcheck_mpc_cmp (t, z); + if (cmp != 0) { unsigned long err_re = ulp_error (mpc_realref (t), mpc_realref (z)); unsigned long err_im = ulp_error (mpc_imagref (t), mpc_imagref (z)); @@ -74,6 +123,8 @@ FUN (mpfr_prec_t p, unsigned long n) mpfr_printf (" c%s gives (%Re,%Re)\n", BAR, mpc_realref (t), mpc_imagref (t)); } + if (recheck) + CHECK (x, z); errors ++; if (err_re > max_err_re) { |