BloombergLP::bsls::PlatformUtil

Name

Description

Int64

64‐bit signed integer type for all supported platforms.

IntPtr

The aliases UintPtr and IntPtr are guaranteed to have the same size as pointers.

MaxAlign

The alias MaxAlign refers to a type that is maximally‐aligned on the current platform.

Uint64

The aliases Int64 and Uint64 stand for whatever type Types implements for the appropriate supported platforms.

UintPtr

Unsigned integer type guaranteed to have the same size as pointers.

size_type

The alias size_type refers to the preferred type for denoting a number of elements in either bslma allocators or container types. Note that this type is signed, as negative values may make sense in certain contexts. Also note that the standard‐compliant allocators (e.g., bsl::allocator and std::allocator) use an unsigned size type, but that is fine because they also have a mechanism (max_size) to determine overflows resulting from converting from one size type to the other.

Name

Description

isBigEndian

Return true if this platform is "big‐endian", and false otherwise. Note that "big‐endian" (i.e., the most significant byte of data at the lowest byte address) is consistent with network byte order.

isLittleEndian

Return true if this platform is "little‐endian", and false otherwise. Note that "little‐endian" (i.e., the least significant byte of data at the lowest byte address) is inconsistent with network byte order.

roundUpToMaximalAlignment

Return the specified size (in bytes) rounded up to the smallest integral multiple of the maximum alignment. The behavior is undefined unless 0 <= size.