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| author | vlefevre <vlefevre@280ebfd0-de03-0410-8827-d642c229c3f4> | 2007-02-09 11:55:51 +0000 |
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| committer | vlefevre <vlefevre@280ebfd0-de03-0410-8827-d642c229c3f4> | 2007-02-09 11:55:51 +0000 |
| commit | 4d4d1ab0a5a6530e863bc6f236e0c2dc626ad1f5 (patch) | |
| tree | 45e2e18487f42d762bc53e668cecc88575e12139 /mpfr-impl.h | |
| parent | 08f8c45d7453a73ba4f4631e89d4a1007d651c5f (diff) | |
| download | mpfr-4d4d1ab0a5a6530e863bc6f236e0c2dc626ad1f5.tar.gz | |
mpfr-impl.h: added a comment about the exponent limits for MPFR numbers.
git-svn-id: svn://scm.gforge.inria.fr/svn/mpfr/trunk@4353 280ebfd0-de03-0410-8827-d642c229c3f4
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 |