# std/binary ## Index - fn [`u16_be`](#u16_be) - fn [`u32_be`](#u32_be) - fn [`u64_be`](#u64_be) - fn [`u16_le`](#u16_le) - fn [`u32_le`](#u32_le) - fn [`u64_le`](#u64_le) - fn [`get_u16_be`](#get_u16_be) - fn [`get_u32_be`](#get_u32_be) - fn [`get_u64_be`](#get_u64_be) - fn [`get_u16_le`](#get_u16_le) - fn [`get_u32_le`](#get_u32_le) - fn [`get_u64_le`](#get_u64_le) - fn [`get_i16_be`](#get_i16_be) - fn [`get_i32_be`](#get_i32_be) - fn [`get_i16_le`](#get_i16_le) - fn [`get_i32_le`](#get_i32_le) - fn [`uvarint`](#uvarint) - fn [`varint`](#varint) - fn [`get_uvarint`](#get_uvarint) - fn [`get_varint`](#get_varint) ## Functions ### u16_be ```xo fn u16_be(n: Int) -> Bytes ``` The low 16 bits of n, big endian (2 bytes); also the 32 (4 bytes) and 64 bit (8 bytes) forms and little endian ones. [Source: `std/binary.xo:9`](https://github.com/xo-lang/xo/blob/main/std/binary.xo#L9) ### u32_be ```xo fn u32_be(n: Int) -> Bytes ``` [Source: `std/binary.xo:10`](https://github.com/xo-lang/xo/blob/main/std/binary.xo#L10) ### u64_be ```xo fn u64_be(n: Int) -> Bytes ``` [Source: `std/binary.xo:11`](https://github.com/xo-lang/xo/blob/main/std/binary.xo#L11) ### u16_le ```xo fn u16_le(n: Int) -> Bytes ``` [Source: `std/binary.xo:12`](https://github.com/xo-lang/xo/blob/main/std/binary.xo#L12) ### u32_le ```xo fn u32_le(n: Int) -> Bytes ``` [Source: `std/binary.xo:13`](https://github.com/xo-lang/xo/blob/main/std/binary.xo#L13) ### u64_le ```xo fn u64_le(n: Int) -> Bytes ``` [Source: `std/binary.xo:14`](https://github.com/xo-lang/xo/blob/main/std/binary.xo#L14) ### get_u16_be ```xo fn get_u16_be(b: Bytes, at: Int) -> Int ``` The unsigned 16 bit value at byte at, big endian; faults when the bytes run past the end. Also the 32 and 64 bit and little endian forms. [Source: `std/binary.xo:18`](https://github.com/xo-lang/xo/blob/main/std/binary.xo#L18) ### get_u32_be ```xo fn get_u32_be(b: Bytes, at: Int) -> Int ``` [Source: `std/binary.xo:19`](https://github.com/xo-lang/xo/blob/main/std/binary.xo#L19) ### get_u64_be ```xo fn get_u64_be(b: Bytes, at: Int) -> Int ``` [Source: `std/binary.xo:20`](https://github.com/xo-lang/xo/blob/main/std/binary.xo#L20) ### get_u16_le ```xo fn get_u16_le(b: Bytes, at: Int) -> Int ``` [Source: `std/binary.xo:21`](https://github.com/xo-lang/xo/blob/main/std/binary.xo#L21) ### get_u32_le ```xo fn get_u32_le(b: Bytes, at: Int) -> Int ``` [Source: `std/binary.xo:22`](https://github.com/xo-lang/xo/blob/main/std/binary.xo#L22) ### get_u64_le ```xo fn get_u64_le(b: Bytes, at: Int) -> Int ``` [Source: `std/binary.xo:23`](https://github.com/xo-lang/xo/blob/main/std/binary.xo#L23) ### get_i16_be ```xo fn get_i16_be(b: Bytes, at: Int) -> Int ``` The same, sign extended (Go's int16(binary.BigEndian.Uint16(b))). [Source: `std/binary.xo:25`](https://github.com/xo-lang/xo/blob/main/std/binary.xo#L25) ### get_i32_be ```xo fn get_i32_be(b: Bytes, at: Int) -> Int ``` [Source: `std/binary.xo:26`](https://github.com/xo-lang/xo/blob/main/std/binary.xo#L26) ### get_i16_le ```xo fn get_i16_le(b: Bytes, at: Int) -> Int ``` [Source: `std/binary.xo:27`](https://github.com/xo-lang/xo/blob/main/std/binary.xo#L27) ### get_i32_le ```xo fn get_i32_le(b: Bytes, at: Int) -> Int ``` [Source: `std/binary.xo:28`](https://github.com/xo-lang/xo/blob/main/std/binary.xo#L28) ### uvarint ```xo fn uvarint(n: Int) -> Bytes ``` n as an unsigned 64 bit word in the varint encoding (binary.AppendUvarint). [Source: `std/binary.xo:31`](https://github.com/xo-lang/xo/blob/main/std/binary.xo#L31) ### varint ```xo fn varint(n: Int) -> Bytes ``` n zig-zag encoded (binary.AppendVarint). [Source: `std/binary.xo:33`](https://github.com/xo-lang/xo/blob/main/std/binary.xo#L33) ### get_uvarint ```xo fn get_uvarint(b: Bytes, at: Int) -> (Int, Int)? ``` The value at byte at and the bytes it took; None when the input ends first or the value overflows 64 bits (binary.Uvarint's n \<= 0). [Source: `std/binary.xo:36`](https://github.com/xo-lang/xo/blob/main/std/binary.xo#L36) ### get_varint ```xo fn get_varint(b: Bytes, at: Int) -> (Int, Int)? ``` [Source: `std/binary.xo:37`](https://github.com/xo-lang/xo/blob/main/std/binary.xo#L37)