diff options
Diffstat (limited to 'factorial.c')
| -rw-r--r-- | factorial.c | 52 |
1 files changed, 26 insertions, 26 deletions
diff --git a/factorial.c b/factorial.c index d81b56dae..682ee732d 100644 --- a/factorial.c +++ b/factorial.c @@ -63,38 +63,38 @@ mpfr_fac_ui (mpfr_ptr y, unsigned long int x, mp_rnd_t rnd_mode) /* compute factorial */ inexact = mpfr_set_ui (t, 1, rnd); for (i = 2 ; i <= x ; i++) - { - round = mpfr_mul_ui (t, t, i, rnd); - /* assume the first inexact product gives the sign - of difference: is that always correct? */ - if (inexact == 0) - inexact = round; - } + { + round = mpfr_mul_ui (t, t, i, rnd); + /* assume the first inexact product gives the sign + of difference: is that always correct? */ + if (inexact == 0) + inexact = round; + } err = Nt - 1 - MPFR_INT_CEIL_LOG2 (Nt); round = !inexact || mpfr_can_round (t, err, rnd, GMP_RNDZ, - Ny + (rnd_mode == GMP_RNDN)); + Ny + (rnd_mode == GMP_RNDN)); if (MPFR_LIKELY (round)) - { - /* If inexact = 0, then t is exactly x!, so round is the - correct inexact flag. - Otherwise, t != x! since we rounded to zero or away. */ - round = mpfr_set (y, t, rnd_mode); - if (inexact == 0) - { - inexact = round; - break; - } - else if ((inexact < 0 && round <= 0) - || (inexact > 0 && round >= 0)) - break; - else /* inexact and round have opposite signs: we cannot - compute the inexact flag. Restart using the - symmetric rounding. */ - rnd = (rnd == GMP_RNDZ) ? GMP_RNDU : GMP_RNDZ; - } + { + /* If inexact = 0, then t is exactly x!, so round is the + correct inexact flag. + Otherwise, t != x! since we rounded to zero or away. */ + round = mpfr_set (y, t, rnd_mode); + if (inexact == 0) + { + inexact = round; + break; + } + else if ((inexact < 0 && round <= 0) + || (inexact > 0 && round >= 0)) + break; + else /* inexact and round have opposite signs: we cannot + compute the inexact flag. Restart using the + symmetric rounding. */ + rnd = (rnd == GMP_RNDZ) ? GMP_RNDU : GMP_RNDZ; + } MPFR_ZIV_NEXT (loop, Nt); mpfr_set_prec (t, Nt); } |