bdlb::BitStringImpUtil Struct Reference

#include <bdlb_bitstringimputil.h>

List of all members.

Public Types
enum	{ k_BITS_PER_UINT64 = 64 }
Static Public Member Functions
static void	andEqBits (bsl::uint64_t *dstValue, int dstIndex, bsl::uint64_t srcValue, int numBits)
static void	andEqWord (bsl::uint64_t *dstValue, bsl::uint64_t srcValue)
static void	minusEqBits (bsl::uint64_t *dstValue, int dstIndex, bsl::uint64_t srcValue, int numBits)
static void	minusEqWord (bsl::uint64_t *dstValue, bsl::uint64_t srcValue)
static void	orEqBits (bsl::uint64_t *dstValue, int dstIndex, bsl::uint64_t srcValue, int numBits)
static void	orEqWord (bsl::uint64_t *dstValue, bsl::uint64_t srcValue)
static void	setEqBits (bsl::uint64_t *dstValue, int dstIndex, bsl::uint64_t srcValue, int numBits)
static void	setEqWord (bsl::uint64_t *dstValue, bsl::uint64_t srcValue)
static void	xorEqBits (bsl::uint64_t *dstValue, int dstIndex, bsl::uint64_t srcValue, int numBits)
static void	xorEqWord (bsl::uint64_t *dstValue, bsl::uint64_t srcValue)
static int	find1AtMaxIndexRaw (bsl::uint64_t value)
static int	find1AtMinIndexRaw (bsl::uint64_t value)

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Detailed Description

This struct provides a namespace for static functions to be used solely in the implementation of BitStringUtil. The "Manipulators" are intended to be provided as arguments to templates in bdlb_bitstringutil, whereas the "Accessors" are to be called directly within that component.

See Component bdlb_bitstringimputil

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Member Enumeration Documentation

anonymous enum

number of bits in uint64_t

Enumerator:

k_BITS_PER_UINT64

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Member Function Documentation

static void bdlb::BitStringImpUtil::andEqBits	(	bsl::uint64_t *	dstValue,
		int	dstIndex,
		bsl::uint64_t	srcValue,
		int	numBits
	)			[static]

Bitwise AND the specified least-significant numBits in the specified srcValue to those in the specified dstValue starting at the specified dstIndex. The behavior is undefined unless 0 <= dstIndex, 0 <= numBits, and dstIndex + numBits <= k_BITS_PER_UINT64.

static void bdlb::BitStringImpUtil::andEqWord	(	bsl::uint64_t *	dstValue,
		bsl::uint64_t	srcValue
	)			[static]

Assign to the specified *dstValue the value of *dstValue bitwise AND-ed with the specified srcValue.

static void bdlb::BitStringImpUtil::minusEqBits	(	bsl::uint64_t *	dstValue,
		int	dstIndex,
		bsl::uint64_t	srcValue,
		int	numBits
	)			[static]

Bitwise MINUS the specified least-significant numBits in the specified srcValue from those in the specified dstValue starting at the specified dstIndex. The behavior is undefined unless 0 <= dstIndex, 0 <= numBits, and dstIndex + numBits <= k_BITS_PER_UINT64. Note that the bitwise difference, a - b, is defined in C++ code as a & ~b.

static void bdlb::BitStringImpUtil::minusEqWord	(	bsl::uint64_t *	dstValue,
		bsl::uint64_t	srcValue
	)			[static]

Assign to the specified *dstValue the value of *dstValue bitwise AND-ed with the complement of the specified srcValue.

static void bdlb::BitStringImpUtil::orEqBits	(	bsl::uint64_t *	dstValue,
		int	dstIndex,
		bsl::uint64_t	srcValue,
		int	numBits
	)			[static]

Bitwise OR the specified least-significant numBits in the specified srcValue to those in the specified dstValue starting at the specified dstIndex. The behavior is undefined unless 0 <= dstIndex, 0 <= numBits, and dstIndex + numBits <= k_BITS_PER_UINT64.

static void bdlb::BitStringImpUtil::orEqWord	(	bsl::uint64_t *	dstValue,
		bsl::uint64_t	srcValue
	)			[static]

Assign to the specified *dstValue the value of *dstValue bitwise OR-ed with the specified srcValue.

static void bdlb::BitStringImpUtil::setEqBits	(	bsl::uint64_t *	dstValue,
		int	dstIndex,
		bsl::uint64_t	srcValue,
		int	numBits
	)			[static]

Replace the specified numBits in the specified dstValue starting at the specified dstIndex with the least-significant numBits of the specified srcValue. The behavior is undefined unless 0 <= dstIndex, 0 <= numBits, and dstIndex + numBits <= k_BITS_PER_UINT64.

static void bdlb::BitStringImpUtil::setEqWord	(	bsl::uint64_t *	dstValue,
		bsl::uint64_t	srcValue
	)			[static]

Assign to the specified *dstValue the value of the specified srcValue.

static void bdlb::BitStringImpUtil::xorEqBits	(	bsl::uint64_t *	dstValue,
		int	dstIndex,
		bsl::uint64_t	srcValue,
		int	numBits
	)			[static]

Bitwise XOR the specified least-significant numBits in the specified srcValue to those in the specified dstValue starting at the specified dstIndex. The behavior is undefined unless 0 <= dstIndex, 0 <= numBits, and dstIndex + numBits <= k_BITS_PER_UINT64.

static void bdlb::BitStringImpUtil::xorEqWord	(	bsl::uint64_t *	dstValue,
		bsl::uint64_t	srcValue
	)			[static]

Assign to the specified *dstValue the value of *dstValue bitwise XOR-ed with the specified srcValue.

static int bdlb::BitStringImpUtil::find1AtMaxIndexRaw

(

bsl::uint64_t

value

)

[static]

Return the index of the highest-order set bit in the specified non-zero value. The behavior is undefined unless 0 != value. Note that this method is "raw" due to the requirement that at least one bit in value must be set.

static int bdlb::BitStringImpUtil::find1AtMinIndexRaw

(

bsl::uint64_t

value

)

[static]

Return the index of the lowest-order set bit in the specified non-zero value. The behavior is undefined unless 0 != value. Note that this method is "raw" due to the requirement that at least one bit in value must be set.

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

• bdlb_bitstringimputil.h