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package extunix
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little endian functions
Conversion functions from host to little endian byte order and back
Conversion of 16bit integers
uint16_from_host u16 converts an unsigned 16bit integer from host to little endian byte order
int16_from_host i16 converts a signed 16bit integer from host to little endian byte order
uint16_to_host u16 converts an unsigned 16bit integer from little endian to host byte order
int16_to_host i16 converts a signed 16bit integer from little endian to host byte order
Conversion of 31bit integeres On 64bit platforms this actualy converts 32bit integers without the need to allocate a new int32. On 32bit platforms it produces garbage. For use on 64bit platforms only!
uint31_from_host u31 converts an unsigned 31bit integer from host to little endian byte order
int31_from_host i31 converts a signed 31bit integer from host to little endian byte order
uint31_to_host u31 converts an unsigned 31bit integer from little endian to host byte order
int31_to_host i31 converts a signed 31bit integer from little endian to host byte order
Conversion of 32bit integers
int32_from_host int32 converts a 32bit integer from host to little endian byte order
int32_to_host int32 converts a 32bit integer from little endian to host byte order
Conversion of 64bit integers
int64_from_host int64 converts a 64bit integer from host to little endian byte order
int64_to_host int64 converts a 64bit integer from little endian to host byte order
unsafe_get_X str off extract integer of type X from string str starting at offset off. Unsigned types are 0 extended and signed types are sign extended to fill the ocaml type. Bounds checking is not performed. Use with caution and only when the program logic guarantees that the access is within bounds.
Note: The 31bit functions extract a 32bit integer and return it as ocaml int. On 32bit platforms this can overflow as ocaml integers are 31bit signed there. No error is reported if this occurs. Use with care.
val unsafe_set_uint8 : Bytes.t -> int -> int -> unitunsafe_set_X buf off v stores the integer v as type X in the buffer buf starting at offset off. Bounds checking is not performed. Use with caution and only when the program logic guarantees that the access is within bounds.
Note: The 31bit functions store an ocaml int as 32bit integer. On 32bit platforms ocaml integers are 31bit signed and will be sign extended to 32bit first. Use with care.
val unsafe_set_int8 : Bytes.t -> int -> int -> unitval unsafe_set_uint16 : Bytes.t -> int -> int -> unitval unsafe_set_int16 : Bytes.t -> int -> int -> unitval unsafe_set_uint31 : Bytes.t -> int -> int -> unitval unsafe_set_int31 : Bytes.t -> int -> int -> unitval unsafe_set_int32 : Bytes.t -> int -> int32 -> unitval unsafe_set_uint63 : Bytes.t -> int -> int -> unitval unsafe_set_int63 : Bytes.t -> int -> int -> unitval unsafe_set_int64 : Bytes.t -> int -> int64 -> unitval set_uint8 : Bytes.t -> int -> int -> unitset_X buf off v same as unsafe_set_X but with bounds checking.
val set_int8 : Bytes.t -> int -> int -> unitval set_uint16 : Bytes.t -> int -> int -> unitval set_int16 : Bytes.t -> int -> int -> unitval set_uint31 : Bytes.t -> int -> int -> unitval set_int31 : Bytes.t -> int -> int -> unitval set_int32 : Bytes.t -> int -> int32 -> unitval set_uint63 : Bytes.t -> int -> int -> unitval set_int63 : Bytes.t -> int -> int -> unitval set_int64 : Bytes.t -> int -> int64 -> unitOn This Page