Version: Nightly

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size_of

def size_of[type: AnyType, target: CompilationTarget = CompilationTarget.current()]() -> Int

Returns the size of (in bytes) of the type.

The size includes any padding required by the type's alignment, so it is always a multiple of align_of[type]() and always matches the stride between adjacent elements of an array of the type.

Example:

from std.sys.info import size_of
def main() raises:
    print(
        size_of[UInt8]() == 1,
        size_of[UInt16]() == 2,
        size_of[Int32]() == 4,
        size_of[Float64]() == 8,
        size_of[
            SIMD[.uint8, 4]
        ]() == 4,
    )

Note: align_of is in same module.

Parameters:

type (AnyType): The type in question.
target (CompilationTarget): The target architecture.

Returns:

Int: The size of the type in bytes.

def size_of[dtype: DType, target: CompilationTarget = CompilationTarget.current()]() -> Int

Returns the size of (in bytes) of the dtype.

Parameters:

dtype (DType): The DType in question.
target (CompilationTarget): The target architecture.

Returns:

Int: The size of the dtype in bytes.