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Mojo function

sizeof

sizeof[type: AnyType, target: target = current_target()]() -> IntLiteral

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

Example:

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

Note: align_of is in same module.

Parameters:

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

Returns:

The size of the type in bytes.

sizeof[type: DType, target: target = current_target()]() -> IntLiteral

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

Parameters:

  • type (DType): The DType in question.
  • target (target): The target architecture.

Returns:

The size of the dtype in bytes.