atlas::bitset::BaseSize< n > Class Template Reference

The class BaseSize computes (with its member 'value') the base size

• the number of words needed for a BitSet holding n bits. Since n must be a compile time constant, BaseSize<n>::value will be one as well.

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#include <bitset.h>

List of all members.

Static Public Attributes
const size_t	value = (n + constants::posBits)/constants::longBits

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Detailed Description

template<size_t n>
class atlas::bitset::BaseSize< n >

The class BaseSize computes (with its member 'value') the base size

• the number of words needed for a BitSet holding n bits. Since n must be a compile time constant, BaseSize<n>::value will be one as well.

Essentially we must divide n by longBits, but the fractional result must be rounded up to the next integer; this is achieved by adding constants::posBits=longBits-1 to n before performing the division. Code simplified by MvL.

Definition at line 766 of file bitset.h.

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Member Data Documentation

template<size_t n> const size_t atlas::bitset::BaseSize< n >::value = (n + constants::posBits)/constants::longBits [static]

Definition at line 768 of file bitset.h.

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The documentation for this class was generated from the following file:

• /home/r0/dav/atlas.dir/atlas3/sources/utilities/bitset.h

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