diff options
Diffstat (limited to 'mpfr-impl.h')
-rw-r--r-- | mpfr-impl.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/mpfr-impl.h b/mpfr-impl.h index aa071f154..4bbbed71b 100644 --- a/mpfr-impl.h +++ b/mpfr-impl.h @@ -537,7 +537,11 @@ typedef unsigned long int mpfr_uexp_t; #define MPFR_EXP_INVALID \ ((mp_exp_t) 1 << (BITS_PER_MP_LIMB*sizeof(mp_exp_t)/sizeof(mp_limb_t)-2)) -/* Definition of the intervals of the exponent limits */ +/* Definition of the exponent limits for MPFR numbers. + * These limits are chosen so that if e is such an exponent, then 2e-1 and + * 2e+1 are representable. This is useful for intermediate computations, + * in particular the multiplication. + */ #undef MPFR_EMIN_MIN #undef MPFR_EMIN_MAX #undef MPFR_EMAX_MIN |