diff options
Diffstat (limited to 'stdlib/gmp-impl.h')
| -rw-r--r-- | stdlib/gmp-impl.h | 20 |
1 files changed, 9 insertions, 11 deletions
diff --git a/stdlib/gmp-impl.h b/stdlib/gmp-impl.h index 0d2a8fcede..2f0956d960 100644 --- a/stdlib/gmp-impl.h +++ b/stdlib/gmp-impl.h @@ -179,24 +179,22 @@ void _mp_default_free (); strings in base 2..36. */ struct bases { - /* Number of digits in the conversion base that always fits in - an mp_limb. For example, for base 10 this is 10, since - 2**32 = 4294967296 has ten digits. */ + /* Number of digits in the conversion base that always fits in an mp_limb. + For example, for base 10 on a machine where a mp_limb has 32 bits this + is 9, since 10**9 is the largest number that fits into a mp_limb. */ int chars_per_limb; /* log(2)/log(conversion_base) */ float chars_per_bit_exactly; - /* big_base is conversion_base**chars_per_limb, i.e. the biggest - number that fits a word, built by factors of conversion_base. - Exception: For 2, 4, 8, etc, big_base is log2(base), i.e. the - number of bits used to represent each digit in the base. */ + /* base**chars_per_limb, i.e. the biggest number that fits a word, built by + factors of base. Exception: For 2, 4, 8, etc, big_base is log2(base), + i.e. the number of bits used to represent each digit in the base. */ mp_limb big_base; - /* big_base_inverted is a BITS_PER_MP_LIMB bit approximation to - 1/big_base, represented as a fixed-point number. Instead of - dividing by big_base an application can choose to multiply - by big_base_inverted. */ + /* A BITS_PER_MP_LIMB bit approximation to 1/big_base, represented as a + fixed-point number. Instead of dividing by big_base an application can + choose to multiply by big_base_inverted. */ mp_limb big_base_inverted; }; |