numeric.md

Numeric

These datatypes represent numbers. Most of them don't take any arguments. They default to big-endian encoding. To use little-endian, prefix its name with "l".

Name	Size in bytes	Example of value	Also called
i8	1	-125	byte
u8	1	255	unsigned byte
i16	2	-32000	short
u16	2	60000	unsigned short
i32	4	-2000000000	int
u32	4	3000000000	unsigned int
f32	4	4.5	float
f64	8	4.5	double
i64	8	1	long
u64	8	1	unsigned long
varint	1-4	300	int var
varint64	1-8	300n	unsigned long
varint128	1-16	2 ^ 68	unsigned __int128
zigzag32	1-4	-100	signed int var
zigzag64	1-8	-680n	signed long

int ({ size: Integer })

Arguments:

• size : fixed size in bytes

Represents a unsigned integer using size bytes.

Example:

[
  "int",
  { "size": "3" }
]

Example of value: 65535 (size = 2) / 16777215 (size = 3)

varint ( )

Arguments: None

Protobuf-compatible representation for variable-length integers using one or more bytes. Intended for 32-bit unsigned integers, or signed 32-bit integers that have been directly cast to an integer (where the MSB is the sign bit) before encoding.

Example of value: 300 (size is 2 bytes)

varint64 ()

Arguments: None

Same as varint, but for 64-bit unsigned integers, or signed 64-bit integers that have been directly cast to an integer (where the MSB is the sign bit) before encoding.

varint128 ()

Arguments: None

Same as varint, but for 128-bit unsigned integers, or signed 128-bit integers that have been directly cast to an integer (where the MSB is the sign bit) before encoding.

zigzag32 ()

Arguments: None

Similar to varint, except using ZigZag encoding for signed integers. Intended for 32-bit signed numbers.

zigzag64 ()

Arguments: None

Same as zigzag32, but for 64-bit signed integers in ZigZag encoding.